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
use super::*;
//use navigation::*;
use thiserror::Error;
//use crate::observation::record::ObservationData;
#[derive(Debug, Error)]
pub enum Error {
#[error("`base` data must be Observation RINEX for this operation")]
NotObservationBase,
#[error("`base` data must be Navigation RINEX for this operation")]
NotNavigationBase,
#[error("`rover` must be Observation RINEX for this operation")]
NotObservationRover,
#[error("`rover` must be Navigation RINEX for this operation")]
NotNavigationRover,
#[error("failed to parse RINEX data")]
RinexError(#[from] super::Error),
}
/// Advanced RINEX processing algorithms require
/// combining two RINEX files together.
/// This structure helps forming such a context.
/// In the following, `base` is the reference RINEX,
/// and `rover` is the data to compare to "base".
/// We use this structure for operations / analysis that involve two file.
/// When substracting data (A-B), B is always the "base" or "reference station",
/// and A is the "rover" or "raw data".
#[derive(Debug, Clone, PartialEq)]
pub struct DiffContext {
/// "base": reference RINEX
pub base: Rinex,
/// "rover": other RINEX
pub rover: Rinex,
}
impl DiffContext {
/// Builds a new DiffContext from two mutable RINEX.
/// Sample rate is reworked to perfectly match:
/// non shared epochs are dropped, to facilitate further processing.
/// For Observation context: we only retain Phase and Pseudo Range observations,
/// as we don't know of Differential analysis involving other observations.
/// For Navigation context: we only retain Ephemeris frames,
/// as we don't know of Differential analysis involving other frames.
pub fn new(base: &Rinex, rover: &Rinex) -> Self {
let base = base.clone();
let rover = rover.clone();
/*
base.decim_match_mut(&rover);
rover.decim_match_mut(&base);
// match /adjust sample rates
// For Navigation RINEX
// retain ephemeris frames only
base.retain_navigation_ephemeris_mut();
rover.retain_navigation_ephemeris_mut();
// For Observation RINEX
// retain Phase and Pseudo Range observations only
// and only shared vehicles
if let Some(record) = base.record.as_mut_obs() {
record.retain(|e, (_, vehicles)| {
vehicles.retain(|sv, observations| {
if let Some(obs_rov) = rover.record.as_obs() {
let (_, rov_vehicles) = obs_rov.get(e)
.unwrap();
let mut shared = false;
for (rov_sv, _) in rov_vehicles {
shared |= rov_sv == sv;
}
if shared {
observations.retain(|code, _| {
is_pseudo_range_obs_code!(code) || is_phase_carrier_obs_code!(code)
});
observations.len() > 0
} else {
false
}
} else if let Some(nav_rov) = rover.record.as_nav() {
let mut shared = false;
let rov_classes = nav_rov.get(e)
.unwrap();
for (rov_class, rov_frames) in rov_classes {
for rov_frame in rov_frames {
let (_, rov_sv, _) = rov_frame.as_eph()
.unwrap();
shared |= rov_sv == sv;
}
}
if shared {
observations.retain(|code, _| {
is_pseudo_range_obs_code!(code) || is_phase_carrier_obs_code!(code)
});
observations.len() > 0
} else {
false
}
} else {
false
}
});
vehicles.len() > 0
});
}
// For Navigation (ephemeris..) RINEX
// retain only shared vehicles
else if let Some(record) = base.record.as_mut_nav() {
record.retain(|e, classes| {
classes.retain(|class, frames| {
frames.retain(|fr| {
let mut shared = false;
let (_, sv, _) = fr.as_eph()
.unwrap();
if let Some(obs_rec) = rover.record.as_obs() {
let (_, obs_vehicles) = obs_rec.get(e)
.unwrap();
for (obs_sv, _) in obs_vehicles {
shared |= obs_sv == sv;
}
} else if let Some(nav_rec) = rover.record.as_nav() {
let classes = nav_rec.get(e)
.unwrap();
for (class, frames) in classes {
for fr in frames {
let (_, nav_sv, _) = fr.as_eph()
.unwrap();
shared |= nav_sv == sv;
}
}
}
shared
});
frames.len() > 0
});
classes.len() > 0
});
}
/*
* at this point "base" is ready for processing,
* let's strip "rover" to identical vehicles to
* to speed up and eventually facilitate further operations
*/
if let Some(record) = rover.record.as_mut_obs() {
record.retain(|e, (_, vehicles)| {
vehicles.retain(|sv, _| {
let mut shared = false;
if let Some(obs_base) = base.record.as_obs() {
let (_, base_vehicles) = obs_base.get(e)
.unwrap();
for (base_sv, _) in base_vehicles {
shared |= base_sv == sv;
}
} else if let Some(nav_base) = base.record.as_nav() {
let base_classes = nav_base.get(e)
.unwrap();
for (class, frames) in base_classes {
for fr in frames {
let (_, nav_sv, _) = fr.as_eph()
.unwrap();
shared |= nav_sv == sv;
}
}
}
false
});
vehicles.len() > 0
});
} else if let Some(record) = rover.record.as_mut_nav() {
record.retain(|e, classes| {
classes.retain(|class, frames| {
frames.retain(|fr| {
let mut shared = false;
let (_, sv, _) = fr.as_eph()
.unwrap();
if let Some(obs_base) = base.record.as_obs() {
let (_, base_vehicles) = obs_base.get(e)
.unwrap();
for (base_sv, _) in base_vehicles {
shared |= sv == base_sv;
}
} else if let Some(nav_base) = base.record.as_nav() {
let nav_classes = nav_base.get(e)
.unwrap();
for (class, frames) in nav_classes {
for fr in frames {
let (_, base_sv, _) = fr.as_eph()
.unwrap();
shared |= sv == base_sv;
}
}
}
shared
});
frames.len() > 0
});
classes.len() > 0
});
}
*/
Self { base, rover }
}
/// Builds Self from two local files
pub fn from_files(fp: &str, rover_fp: &str) -> Result<Self, Error> {
let rnx = Rinex::from_file(fp)?;
let rover = Rinex::from_file(rover_fp)?;
Ok(Self::new(&rnx, &rover))
}
}