channel_measurement_t Struct Reference

#include <track.h>

List of all members.

Public Attributes
double	carrier_freq
double	carrier_phase
double	code_phase_chips
double	code_phase_rate
u16	lock_counter
u8	prn
double	receiver_time
double	snr
u32	time_of_week_ms

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Detailed Description

This struct holds the state of a tracking channel at a given receiver time epoch.

The struct contains the information necessary to calculate the pseudorange, carrier phase and Doppler information needed for a PVT solution but is formatted closer to the natural outputs from the tracking channels.

See also:

calc_navigation_measurement()

Definition at line 109 of file track.h.

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Member Data Documentation

double channel_measurement_t::carrier_freq

Carrier frequency in Hz.

Definition at line 114 of file track.h.

double channel_measurement_t::carrier_phase

Carrier phase in cycles.

Definition at line 113 of file track.h.

double channel_measurement_t::code_phase_chips

The code-phase in chips at `receiver_time`.

Definition at line 111 of file track.h.

double channel_measurement_t::code_phase_rate

Code phase rate in chips/s.

Definition at line 112 of file track.h.

u16 channel_measurement_t::lock_counter

This number is changed each time the tracking channel is re-locked or a cycle slip is detected and the carrier phase integer ambiguity is reset. If this number changes it is an indication you should reset integer ambiguity resolution for this channel.

Definition at line 120 of file track.h.

u8 channel_measurement_t::prn

Satellite PRN.

Definition at line 110 of file track.h.

double channel_measurement_t::receiver_time

Receiver clock time at which this measurement is valid in seconds.

Definition at line 117 of file track.h.

double channel_measurement_t::snr

Signal to noise ratio.

Definition at line 119 of file track.h.

u32 channel_measurement_t::time_of_week_ms

Number of milliseconds since the start of the GPS week corresponding to the last code rollover.

Definition at line 115 of file track.h.

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The documentation for this struct was generated from the following file:

• track.h