Struct SolveInputs 

pub struct SolveInputs {
    pub observations: Vec<Observation>,
    pub t_rx_j2000_s: f64,
    pub t_rx_second_of_day_s: f64,
    pub day_of_year: f64,
    pub initial_guess: [f64; 4],
    pub corrections: Corrections,
    pub klobuchar: KlobucharCoeffs,
    pub beidou_klobuchar: Option<KlobucharCoeffs>,
    pub galileo_nequick: Option<GalileoNequickCoeffs>,
    pub glonass_channels: BTreeMap<u8, i8>,
    pub met: SurfaceMet,
    pub robust: Option<RobustConfig>,
}

Everything one SPP solve needs besides the SP3 product itself.

The receive epoch is carried as seconds-since-J2000 (t_rx_j2000_s), the argument the transmit-time iteration differences against the geometric range to land the satellite ephemeris at transmission, with no Julian-date round-trip inside the loop. The Klobuchar diurnal argument (t_rx_second_of_day_s) and the Niell seasonal argument (day_of_year) are supplied directly so the correction kernels run in their bit-exact native units.

Fields

observations: Vec<Observation>

The pseudorange observations (any order; the solve sorts them).

t_rx_j2000_s: f64

Receive epoch, seconds since J2000 in the SP3 product’s time scale.

t_rx_second_of_day_s: f64

GPS second-of-day of the receive epoch (Klobuchar diurnal argument).

day_of_year: f64

Fractional day-of-year of the receive epoch (Niell seasonal argument).

initial_guess: [f64; 4]

Initial guess [x_m, y_m, z_m, b_m].

corrections: Corrections

The correction terms to apply.

klobuchar: KlobucharCoeffs

Broadcast Klobuchar coefficients (used iff corrections.ionosphere). Applied to every system unless beidou_klobuchar overrides BeiDou.

beidou_klobuchar: Option<KlobucharCoeffs>

Optional BeiDou-specific Klobuchar coefficients (the broadcast BDSA/ BDSB set). When present, BeiDou satellites use these instead of klobuchar; both feed the same model, frequency-scaled to B1I. None falls back to klobuchar for BeiDou too.

galileo_nequick: Option<GalileoNequickCoeffs>

Optional Galileo-specific NeQuick-G coefficients (the broadcast GAL ai0/ai1/ai2 set). When present, Galileo satellites use these instead of the GPS Klobuchar coefficients. None preserves the historical Klobuchar fallback so existing zero-Galileo goldens stay bit-identical.

glonass_channels: BTreeMap<u8, i8>

GLONASS FDMA channel numbers keyed by GLONASS slot (PRN), from the broadcast nav freq_channel field or the observation header’s GLONASS SLOT / FRQ # records. Used only to resolve the per-satellite GLONASS carrier for the ionosphere (f_L1 / f_k)^2 scaling; an empty map is correct for any solve with no GLONASS observation and leaves every other constellation bit-identical. A GLONASS observation with the ionosphere correction requested but no channel here is rejected with SppError::IonosphereUnsupported.

met: SurfaceMet

Surface meteorology (used iff corrections.troposphere).

robust: Option<RobustConfig>

Opt-in Huber/IRLS robust reweighting. None (the default behavior) runs the static elevation-weighted solve byte-identically; Some(_) adds the outer reweighting loop described on RobustConfig.

Trait Implementations

impl Clone for SolveInputs

fn clone(&self) -> SolveInputs

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SolveInputs

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.