Module observables 

Forward GNSS observable prediction.

This module owns the language-independent geometry behind Sidereon’ Observables.predict: transmit-time iteration, Sagnac rotation, line of sight, range rate, Doppler, and topocentric azimuth/elevation. Ephemeris parsing and interpolation stay with their existing SP3/broadcast products.

Structs

ObservableState

Satellite state required by the observable predictor.

PredictOptions

Options controlling observable prediction.

PredictedObservables

Predicted GNSS observables at one receive epoch.

Enums

ObservablesError

Error returned by the observable predictor.

ObservablesInputErrorKind

Input-validation failure category for observable prediction.

Traits

ObservableEphemerisSource

An ephemeris product usable by predict.

Functions

j2000_seconds_from_split

Convert split Julian date to seconds since J2000.

predict

Predict observables for sat from a static ECEF receiver.