gnss-rtk 0.8.0

GNSS position solver
Documentation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
use std::str::FromStr;

use crate::{
    prelude::{Candidate, Carrier, Epoch, Observation, RTKBase, SV},
    tests::{
        data::{E01, E03, E05, E09, E13, E15, E24, E31},
        BASE_REFERENCE_COORDS_ECEF_M,
    },
};

pub struct RTKStation {
    candidates: Vec<Candidate>,
}

impl RTKBase for RTKStation {
    fn name(&self) -> String {
        "MOJN/DNK".to_string()
    }

    fn new_epoch(&mut self, _: Epoch) {}

    fn observe(&self, epoch: Epoch) -> Vec<Candidate> {
        self.candidates
            .iter()
            .filter(|cd| cd.epoch == epoch)
            .cloned()
            .collect()
    }

    fn reference_position_ecef_m(&self, _: Epoch) -> (f64, f64, f64) {
        BASE_REFERENCE_COORDS_ECEF_M
    }
}

pub struct CandidatesBuilder {}

impl CandidatesBuilder {
    pub fn build_rover_at(epoch: Epoch) -> Vec<Candidate> {
        Self::build_rover_data()
            .into_iter()
            .filter(|cd| cd.epoch == epoch)
            .collect()
    }

    pub fn build_rover_sv_at(sv: SV, epoch: Epoch) -> Candidate {
        Self::build_rover_data()
            .into_iter()
            .filter(|cd| cd.epoch == epoch && cd.sv == sv)
            .reduce(|k, _| k)
            .unwrap_or_else(|| {
                panic!("Failed to build {epoch}({sv}) data");
            })
    }

    pub fn build_rover_data() -> Vec<Candidate> {
        let t0_gpst = Epoch::from_str("2020-06-25T00:00:00 GPST").unwrap();
        let t1_gpst = Epoch::from_str("2020-06-25T00:15:00 GPST").unwrap();
        let t2_gpst = Epoch::from_str("2020-06-25T00:30:00 GPST").unwrap();
        let t3_gpst = Epoch::from_str("2020-06-25T00:45:00 GPST").unwrap();
        let t4_gpst = Epoch::from_str("2020-06-25T01:00:00 GPST").unwrap();

        [
            Candidate::new(
                E01,
                t0_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27616185.992, None)
                        .with_ambiguous_phase_range_m(145124050.106),
                    Observation::pseudo_range(Carrier::E5b, 27616184.819, None)
                        .with_ambiguous_phase_range_m(108371872.760),
                ],
            ),
            Candidate::new(
                E03,
                t0_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27055946.391, None)
                        .with_ambiguous_phase_range_m(142179967.778),
                    Observation::pseudo_range(Carrier::E5b, 27055945.532, None)
                        .with_ambiguous_phase_range_m(106173364.686),
                ],
            ),
            Candidate::new(
                E05,
                t0_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23730317.923, None)
                        .with_ambiguous_phase_range_m(124703702.220),
                    Observation::pseudo_range(Carrier::E5b, 23730316.788, None)
                        .with_ambiguous_phase_range_m(93122915.921),
                ],
            ),
            Candidate::new(
                E09,
                t0_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 22756243.562, None)
                        .with_ambiguous_phase_range_m(119584910.611),
                    Observation::pseudo_range(Carrier::E5b, 22756242.295, None)
                        .with_ambiguous_phase_range_m(89300442.791),
                ],
            ),
            Candidate::new(
                E13,
                t0_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27978718.264, None)
                        .with_ambiguous_phase_range_m(147029158.327),
                    Observation::pseudo_range(Carrier::E5b, 27978716.335, None)
                        .with_ambiguous_phase_range_m(109794501.184),
                ],
            ),
            Candidate::new(
                E15,
                t0_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 26889610.666, None)
                        .with_ambiguous_phase_range_m(141305866.869),
                    Observation::pseudo_range(Carrier::E5b, 26889610.961, None)
                        .with_ambiguous_phase_range_m(105520617.365),
                ],
            ),
            Candidate::new(
                E24,
                t0_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23636670.553, None)
                        .with_ambiguous_phase_range_m(124211548.364),
                    Observation::pseudo_range(Carrier::E5b, 23636680.074, None)
                        .with_ambiguous_phase_range_m(92755422.744),
                ],
            ),
            Candidate::new(
                E31,
                t0_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 24566160.392, None)
                        .with_ambiguous_phase_range_m(129096072.832),
                    Observation::pseudo_range(Carrier::E5b, 24566159.582, None)
                        .with_ambiguous_phase_range_m(96402914.192),
                ],
            ),
            Candidate::new(
                E01,
                t1_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 28082362.117, None)
                        .with_ambiguous_phase_range_m(147573817.753),
                    Observation::pseudo_range(Carrier::E5b, 28082361.005, None)
                        .with_ambiguous_phase_range_m(110201243.966),
                ],
            ),
            Candidate::new(
                E03,
                t1_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 26606532.953, None)
                        .with_ambiguous_phase_range_m(139818287.147),
                    Observation::pseudo_range(Carrier::E5b, 26606532.001, None)
                        .with_ambiguous_phase_range_m(104409773.053),
                ],
            ),
            Candidate::new(
                E05,
                t1_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23623876.415, None)
                        .with_ambiguous_phase_range_m(124144348.824),
                    Observation::pseudo_range(Carrier::E5b, 23623875.215, None)
                        .with_ambiguous_phase_range_m(92705217.123),
                ],
            ),
            Candidate::new(
                E09,
                t1_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23092986.586, None)
                        .with_ambiguous_phase_range_m(121354506.223),
                    Observation::pseudo_range(Carrier::E5b, 23092985.298, None)
                        .with_ambiguous_phase_range_m(90621893.797),
                ],
            ),
            Candidate::new(
                E13,
                t1_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27780658.212, None)
                        .with_ambiguous_phase_range_m(145988350.070),
                    Observation::pseudo_range(Carrier::E5b, 27780656.979, None)
                        .with_ambiguous_phase_range_m(109017274.709),
                ],
            ),
            Candidate::new(
                E15,
                t1_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27119058.610, None)
                        .with_ambiguous_phase_range_m(142511625.150),
                    Observation::pseudo_range(Carrier::E5b, 27119059.363, None)
                        .with_ambiguous_phase_range_m(106421021.309),
                ],
            ),
            Candidate::new(
                E24,
                t1_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23222677.117, None)
                        .with_ambiguous_phase_range_m(122035999.088),
                    Observation::pseudo_range(Carrier::E5b, 23222687.027, None)
                        .with_ambiguous_phase_range_m(91130824.527),
                ],
            ),
            Candidate::new(
                E31,
                t1_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 24631780.017, None)
                        .with_ambiguous_phase_range_m(129440908.053),
                    Observation::pseudo_range(Carrier::E5b, 24631779.306, None)
                        .with_ambiguous_phase_range_m(96660421.268),
                ],
            ),
            Candidate::new(
                E01,
                t2_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 28577344.325, None)
                        .with_ambiguous_phase_range_m(150174966.356),
                    Observation::pseudo_range(Carrier::E5b, 28577343.483, None)
                        .with_ambiguous_phase_range_m(112143659.135),
                ],
            ),
            Candidate::new(
                E03,
                t2_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 26174086.791, None)
                        .with_ambiguous_phase_range_m(137545768.524),
                    Observation::pseudo_range(Carrier::E5b, 26174085.540, None)
                        .with_ambiguous_phase_range_m(102712763.137),
                ],
            ),
            Candidate::new(
                E05,
                t2_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23568449.038, None)
                        .with_ambiguous_phase_range_m(123853076.698),
                    Observation::pseudo_range(Carrier::E5b, 23568447.746, None)
                        .with_ambiguous_phase_range_m(92487708.863),
                ],
            ),
            Candidate::new(
                E09,
                t2_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23467567.543, None)
                        .with_ambiguous_phase_range_m(123322942.461),
                    Observation::pseudo_range(Carrier::E5b, 23467566.515, None)
                        .with_ambiguous_phase_range_m(92091829.787),
                ],
            ),
            Candidate::new(
                E13,
                t2_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27657598.527, None)
                        .with_ambiguous_phase_range_m(145341666.399),
                    Observation::pseudo_range(Carrier::E5b, 27657597.170, None)
                        .with_ambiguous_phase_range_m(108534361.838),
                ],
            ),
            Candidate::new(
                E15,
                t2_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27414801.157, None)
                        .with_ambiguous_phase_range_m(144065761.257),
                    Observation::pseudo_range(Carrier::E5b, 27414800.782, None)
                        .with_ambiguous_phase_range_m(107581577.638),
                ],
            ),
            Candidate::new(
                E24,
                t2_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 22863341.608, None)
                        .with_ambiguous_phase_range_m(120147679.864),
                    Observation::pseudo_range(Carrier::E5b, 22863351.054, None)
                        .with_ambiguous_phase_range_m(89720716.434),
                ],
            ),
            Candidate::new(
                E31,
                t2_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 24770072.612, None)
                        .with_ambiguous_phase_range_m(130167640.275),
                    Observation::pseudo_range(Carrier::E5b, 24770071.564, None)
                        .with_ambiguous_phase_range_m(97203111.17706),
                ],
            ),
            Candidate::new(
                E01,
                t3_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 29092635.828, None)
                        .with_ambiguous_phase_range_m(152882837.719),
                    Observation::pseudo_range(Carrier::E5b, 29092635.926, None)
                        .with_ambiguous_phase_range_m(114165769.700),
                ],
            ),
            Candidate::new(
                E03,
                t3_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 25763722.247, None)
                        .with_ambiguous_phase_range_m(135389290.834),
                    Observation::pseudo_range(Carrier::E5b, 25763720.939, None)
                        .with_ambiguous_phase_range_m(101102406.973),
                ],
            ),
            Candidate::new(
                E05,
                t3_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23566872.078, None)
                        .with_ambiguous_phase_range_m(123844789.147),
                    Observation::pseudo_range(Carrier::E5b, 23566870.615, None)
                        .with_ambiguous_phase_range_m(92481520.116),
                ],
            ),
            Candidate::new(
                E09,
                t3_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23877328.596, None)
                        .with_ambiguous_phase_range_m(125476250.520),
                    Observation::pseudo_range(Carrier::E5b, 23877327.191, None)
                        .with_ambiguous_phase_range_m(93699819.409),
                ],
            ),
            Candidate::new(
                E13,
                t3_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27612730.591, None)
                        .with_ambiguous_phase_range_m(145105885.665),
                    Observation::pseudo_range(Carrier::E5b, 27612729.140, None)
                        .with_ambiguous_phase_range_m(108358292.140),
                ],
            ),
            Candidate::new(
                E15,
                t3_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27768772.741, None)
                        .with_ambiguous_phase_range_m(145925894.814),
                    Observation::pseudo_range(Carrier::E5b, 27768772.699, None)
                        .with_ambiguous_phase_range_m(108970638.656),
                ],
            ),
            Candidate::new(
                E24,
                t3_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 22564462.203, None)
                        .with_ambiguous_phase_range_m(118577059.434),
                    Observation::pseudo_range(Carrier::E5b, 22564471.813, None)
                        .with_ambiguous_phase_range_m(88547850.917),
                ],
            ),
            Candidate::new(
                E31,
                t3_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 24976421.969, None)
                        .with_ambiguous_phase_range_m(131252014.059),
                    Observation::pseudo_range(Carrier::E5b, 24976421.047, None)
                        .with_ambiguous_phase_range_m(98012870.941),
                ],
            ),
            Candidate::new(
                E03,
                t4_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 25381023.064, None)
                        .with_ambiguous_phase_range_m(133378195.781),
                    Observation::pseudo_range(Carrier::E5b, 25381022.036, None)
                        .with_ambiguous_phase_range_m(99600615.595),
                ],
            ),
            Candidate::new(
                E05,
                t4_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 23621365.068, None)
                        .with_ambiguous_phase_range_m(124131152.182),
                    Observation::pseudo_range(Carrier::E5b, 23621363.960, None)
                        .with_ambiguous_phase_range_m(92695362.567),
                ],
            ),
            Candidate::new(
                E09,
                t4_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 24319118.620, None)
                        .with_ambiguous_phase_range_m(127797872.373),
                    Observation::pseudo_range(Carrier::E5b, 24319117.427, None)
                        .with_ambiguous_phase_range_m(95433498.048),
                ],
            ),
            Candidate::new(
                E13,
                t4_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 27647098.655, None)
                        .with_ambiguous_phase_range_m(145286490.231),
                    Observation::pseudo_range(Carrier::E5b, 27647097.054, None)
                        .with_ambiguous_phase_range_m(108493159.141),
                ],
            ),
            Candidate::new(
                E15,
                t4_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 28171693.206, None)
                        .with_ambiguous_phase_range_m(148043255.618),
                    Observation::pseudo_range(Carrier::E5b, 28171693.865, None)
                        .with_ambiguous_phase_range_m(110551784.578),
                ],
            ),
            Candidate::new(
                E24,
                t4_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 22330484.011, None)
                        .with_ambiguous_phase_range_m(117347497.248),
                    Observation::pseudo_range(Carrier::E5b, 22330493.787, None)
                        .with_ambiguous_phase_range_m(87629671.742),
                ],
            ),
            Candidate::new(
                E31,
                t4_gpst,
                vec![
                    Observation::pseudo_range(Carrier::L1, 25244908.716, None)
                        .with_ambiguous_phase_range_m(132662921.691),
                    Observation::pseudo_range(Carrier::E5b, 25244907.849, None)
                        .with_ambiguous_phase_range_m(99066470.826),
                ],
            ),
        ]
        .into_iter()
        .collect::<Vec<_>>()
    }

    pub fn build_base_at(epoch: Epoch) -> Vec<Candidate> {
        Self::build_rtk_base()
            .candidates
            .into_iter()
            .filter(|cd| cd.epoch == epoch)
            .collect()
    }

    pub fn build_rtk_base() -> RTKStation {
        let t0_gpst = Epoch::from_str("2020-06-25T00:00:00 GPST").unwrap();
        let t1_gpst = Epoch::from_str("2020-06-25T00:15:00 GPST").unwrap();
        let t2_gpst = Epoch::from_str("2020-06-25T00:30:00 GPST").unwrap();
        let t3_gpst = Epoch::from_str("2020-06-25T00:45:00 GPST").unwrap();
        let t4_gpst = Epoch::from_str("2020-06-25T01:00:00 GPST").unwrap();

        RTKStation {
            candidates: [
                Candidate::new(
                    E01,
                    t0_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27506424.743, None)
                            .with_ambiguous_phase_range_m(144547262.730),
                        Observation::pseudo_range(Carrier::E5b, 27506425.902, None)
                            .with_ambiguous_phase_range_m(107941157.967),
                    ],
                ),
                Candidate::new(
                    E03,
                    t0_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 26952639.751, None)
                            .with_ambiguous_phase_range_m(141637100.045),
                        Observation::pseudo_range(Carrier::E5b, 26952641.150, None)
                            .with_ambiguous_phase_range_m(105767978.933),
                    ],
                ),
                Candidate::new(
                    E05,
                    t0_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 23595077.027, None)
                            .with_ambiguous_phase_range_m(123992999.980),
                        Observation::pseudo_range(Carrier::E5b, 23595078.180, None)
                            .with_ambiguous_phase_range_m(92592203.174),
                    ],
                ),
                Candidate::new(
                    E09,
                    t0_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 22579938.261, None)
                            .with_ambiguous_phase_range_m(118658395.104),
                        Observation::pseudo_range(Carrier::E5b, 22579939.154, None)
                            .with_ambiguous_phase_range_m(88608582.211),
                    ],
                ),
                Candidate::new(
                    E13,
                    t0_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27896986.615, None)
                            .with_ambiguous_phase_range_m(146599656.699),
                        Observation::pseudo_range(Carrier::E5b, 27896987.493, None)
                            .with_ambiguous_phase_range_m(109473776.599),
                    ],
                ),
                Candidate::new(
                    E15,
                    t0_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 26795887.300, None)
                            .with_ambiguous_phase_range_m(140813350.371),
                        Observation::pseudo_range(Carrier::E5b, 26795890.201, None)
                            .with_ambiguous_phase_range_m(105152837.931),
                    ],
                ),
                Candidate::new(
                    E24,
                    t0_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 23442817.742, None)
                            .with_ambiguous_phase_range_m(123192848.846),
                        Observation::pseudo_range(Carrier::E5b, 23442829.814, None)
                            .with_ambiguous_phase_range_m(91994703.581),
                    ],
                ),
                Candidate::new(
                    E31,
                    t0_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 24412335.986, None)
                            .with_ambiguous_phase_range_m(128287717.915),
                        Observation::pseudo_range(Carrier::E5b, 24412337.730, None)
                            .with_ambiguous_phase_range_m(95799293.741),
                    ],
                ),
                Candidate::new(
                    E01,
                    t1_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27974377.193, None)
                            .with_ambiguous_phase_range_m(147006365.626),
                        Observation::pseudo_range(Carrier::E5b, 27974377.970, None)
                            .with_ambiguous_phase_range_m(109777500.329),
                    ],
                ),
                Candidate::new(
                    E03,
                    t1_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 26503200.502, None)
                            .with_ambiguous_phase_range_m(139275284.408),
                        Observation::pseudo_range(Carrier::E5b, 26503201.687, None)
                            .with_ambiguous_phase_range_m(104004286.477),
                    ],
                ),
                Candidate::new(
                    E05,
                    t1_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 23483974.845, None)
                            .with_ambiguous_phase_range_m(123409154.333),
                        Observation::pseudo_range(Carrier::E5b, 23483975.865, None)
                            .with_ambiguous_phase_range_m(92156214.750),
                    ],
                ),
                Candidate::new(
                    E09,
                    t1_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 22911567.867, None)
                            .with_ambiguous_phase_range_m(120401119.889),
                        Observation::pseudo_range(Carrier::E5b, 22911568.832, None)
                            .with_ambiguous_phase_range_m(89909967.382),
                    ],
                ),
                Candidate::new(
                    E13,
                    t1_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27699547.351, None)
                            .with_ambiguous_phase_range_m(145562109.948),
                        Observation::pseudo_range(Carrier::E5b, 27699549.029, None)
                            .with_ambiguous_phase_range_m(108698985.620),
                    ],
                ),
                Candidate::new(
                    E15,
                    t1_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27022726.985, None)
                            .with_ambiguous_phase_range_m(142005399.801),
                        Observation::pseudo_range(Carrier::E5b, 27022729.578, None)
                            .with_ambiguous_phase_range_m(106043004.751),
                    ],
                ),
                Candidate::new(
                    E24,
                    t1_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 23033347.915, None)
                            .with_ambiguous_phase_range_m(121041071.437),
                        Observation::pseudo_range(Carrier::E5b, 23033359.862, None)
                            .with_ambiguous_phase_range_m(90387857.182),
                    ],
                ),
                Candidate::new(
                    E31,
                    t1_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 24483721.753, None)
                            .with_ambiguous_phase_range_m(128662852.556),
                        Observation::pseudo_range(Carrier::E5b, 24483723.293, None)
                            .with_ambiguous_phase_range_m(96079427.036),
                    ],
                ),
                Candidate::new(
                    E01,
                    t2_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 28470378.495, None)
                            .with_ambiguous_phase_range_m(149612867.344),
                        Observation::pseudo_range(Carrier::E5b, 28470380.122, None)
                            .with_ambiguous_phase_range_m(111723912.727),
                    ],
                ),
                Candidate::new(
                    E03,
                    t2_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 26069984.229, None)
                            .with_ambiguous_phase_range_m(136998720.825),
                        Observation::pseudo_range(Carrier::E5b, 26069985.338, None)
                            .with_ambiguous_phase_range_m(102304256.005),
                    ],
                ),
                Candidate::new(
                    E05,
                    t2_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 23423307.439, None)
                            .with_ambiguous_phase_range_m(123090346.112),
                        Observation::pseudo_range(Carrier::E5b, 23423308.541, None)
                            .with_ambiguous_phase_range_m(91918143.807),
                    ],
                ),
                Candidate::new(
                    E09,
                    t2_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 23281268.168, None)
                            .with_ambiguous_phase_range_m(122343908.384),
                        Observation::pseudo_range(Carrier::E5b, 23281269.413, None)
                            .with_ambiguous_phase_range_m(91360750.865),
                    ],
                ),
                Candidate::new(
                    E13,
                    t2_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27576875.364, None)
                            .with_ambiguous_phase_range_m(144917462.078),
                        Observation::pseudo_range(Carrier::E5b, 27576876.259, None)
                            .with_ambiguous_phase_range_m(108217592.997),
                    ],
                ),
                Candidate::new(
                    E15,
                    t2_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27315748.709, None)
                            .with_ambiguous_phase_range_m(143545239.807),
                        Observation::pseudo_range(Carrier::E5b, 27315751.131, None)
                            .with_ambiguous_phase_range_m(107192885.450),
                    ],
                ),
                Candidate::new(
                    E24,
                    t2_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 22678981.962, None)
                            .with_ambiguous_phase_range_m(119178866.588),
                        Observation::pseudo_range(Carrier::E5b, 22678993.820, None)
                            .with_ambiguous_phase_range_m(88997249.984),
                    ],
                ),
                Candidate::new(
                    E31,
                    t2_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 24627352.328, None)
                            .with_ambiguous_phase_range_m(129417636.378),
                        Observation::pseudo_range(Carrier::E5b, 24627353.667, None)
                            .with_ambiguous_phase_range_m(96643064.497),
                    ],
                ),
                Candidate::new(
                    E01,
                    t3_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 29092635.828, None)
                            .with_ambiguous_phase_range_m(152882837.719),
                        Observation::pseudo_range(Carrier::E5b, 29092635.926, None)
                            .with_ambiguous_phase_range_m(114165769.700),
                    ],
                ),
                Candidate::new(
                    E03,
                    t3_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 25763722.247, None)
                            .with_ambiguous_phase_range_m(135389290.834),
                        Observation::pseudo_range(Carrier::E5b, 25763720.939, None)
                            .with_ambiguous_phase_range_m(101102406.973),
                    ],
                ),
                Candidate::new(
                    E05,
                    t3_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 23566872.078, None)
                            .with_ambiguous_phase_range_m(123844789.147),
                        Observation::pseudo_range(Carrier::E5b, 23566870.615, None)
                            .with_ambiguous_phase_range_m(92481520.116),
                    ],
                ),
                Candidate::new(
                    E09,
                    t3_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 23877328.596, None)
                            .with_ambiguous_phase_range_m(125476250.520),
                        Observation::pseudo_range(Carrier::E5b, 23877327.191, None)
                            .with_ambiguous_phase_range_m(93699819.409),
                    ],
                ),
                Candidate::new(
                    E13,
                    t3_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27612730.591, None)
                            .with_ambiguous_phase_range_m(145105885.665),
                        Observation::pseudo_range(Carrier::E5b, 27612729.140, None)
                            .with_ambiguous_phase_range_m(108358292.140),
                    ],
                ),
                Candidate::new(
                    E15,
                    t3_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27768772.741, None)
                            .with_ambiguous_phase_range_m(145925894.814),
                        Observation::pseudo_range(Carrier::E5b, 27768772.699, None)
                            .with_ambiguous_phase_range_m(108970638.656),
                    ],
                ),
                Candidate::new(
                    E24,
                    t3_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 22564462.203, None)
                            .with_ambiguous_phase_range_m(118577059.434),
                        Observation::pseudo_range(Carrier::E5b, 22564471.813, None)
                            .with_ambiguous_phase_range_m(88547850.917),
                    ],
                ),
                Candidate::new(
                    E31,
                    t3_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 24976421.969, None)
                            .with_ambiguous_phase_range_m(131252014.059),
                        Observation::pseudo_range(Carrier::E5b, 24976421.047, None)
                            .with_ambiguous_phase_range_m(98012870.941),
                    ],
                ),
                Candidate::new(
                    E03,
                    t4_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 25381023.064, None)
                            .with_ambiguous_phase_range_m(133378195.781),
                        Observation::pseudo_range(Carrier::E5b, 25381022.036, None)
                            .with_ambiguous_phase_range_m(99600615.595),
                    ],
                ),
                Candidate::new(
                    E05,
                    t4_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 23621365.068, None)
                            .with_ambiguous_phase_range_m(124131152.182),
                        Observation::pseudo_range(Carrier::E5b, 23621363.960, None)
                            .with_ambiguous_phase_range_m(92695362.567),
                    ],
                ),
                Candidate::new(
                    E09,
                    t4_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 24319118.620, None)
                            .with_ambiguous_phase_range_m(127797872.373),
                        Observation::pseudo_range(Carrier::E5b, 24319117.427, None)
                            .with_ambiguous_phase_range_m(95433498.048),
                    ],
                ),
                Candidate::new(
                    E13,
                    t4_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 27647098.655, None)
                            .with_ambiguous_phase_range_m(145286490.231),
                        Observation::pseudo_range(Carrier::E5b, 27647097.054, None)
                            .with_ambiguous_phase_range_m(108493159.141),
                    ],
                ),
                Candidate::new(
                    E15,
                    t4_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 28171693.206, None)
                            .with_ambiguous_phase_range_m(148043255.618),
                        Observation::pseudo_range(Carrier::E5b, 28171693.865, None)
                            .with_ambiguous_phase_range_m(110551784.578),
                    ],
                ),
                Candidate::new(
                    E24,
                    t4_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 22330484.011, None)
                            .with_ambiguous_phase_range_m(117347497.248),
                        Observation::pseudo_range(Carrier::E5b, 22330493.787, None)
                            .with_ambiguous_phase_range_m(87629671.742),
                    ],
                ),
                Candidate::new(
                    E31,
                    t4_gpst,
                    vec![
                        Observation::pseudo_range(Carrier::L1, 25244908.716, None)
                            .with_ambiguous_phase_range_m(132662921.691),
                        Observation::pseudo_range(Carrier::E5b, 25244907.849, None)
                            .with_ambiguous_phase_range_m(99066470.826),
                    ],
                ),
            ]
            .to_vec(),
        }
    }
}

#[cfg(test)]
mod test {

    use super::CandidatesBuilder;
    use itertools::Itertools;

    #[test]
    fn verify_data_correctness() {
        const NB_EXPECTED_EPOCHS: usize = 5;

        let data = CandidatesBuilder::build_rover_data();

        let epoch_uniques = data.iter().map(|cd| cd.epoch).unique().collect::<Vec<_>>();
        let num_epochs = epoch_uniques.len();

        assert_eq!(
            num_epochs, NB_EXPECTED_EPOCHS,
            "incorrect number of epochs: {num_epochs}, expecting {NB_EXPECTED_EPOCHS}"
        );

        let sv_uniques = data.iter().map(|cd| cd.sv).unique().collect::<Vec<_>>();

        for sv in sv_uniques.iter() {
            let sv_data = data.iter().filter(|cd| cd.sv == *sv).collect::<Vec<_>>();

            let epochs = sv_data
                .iter()
                .map(|cd| cd.epoch)
                .sorted()
                .collect::<Vec<_>>();

            let unique_epochs = sv_data
                .iter()
                .map(|cd| cd.epoch)
                .unique()
                .sorted()
                .collect::<Vec<_>>();

            assert_eq!(
                epochs, unique_epochs,
                "{sv} temporal data is not unique: {epochs:#?}"
            );
        }
    }
}