characterize-channel-{rx,tx}

The characterize-channel-{rx,tx} nodes let you characterize a physical GNSS transmitter -> GNSS receiver channel, which includes the properties of the transmitter, the medium (e.g. cables, splitters), and the receiver. The frequency response is computed from the cross-correlation of a pseudorandom noise code.

characterize-channel-rx

Type signature: (raw->[raw])

Help

Usage:

characterize-channel-rx [OPTION]... TX_CONFIG

Allowed options:

Option	Description
--help	produce help message
--tx_config TX_CONFIG	config string (run "sdgps help" for examples)
--tx-gnss-stream arg	GNSS stream from TX_CONFIG to use to regenerate PRN code (default: GNSS_STREAM)
--gnss-stream GNSS_STREAM (=0)	GNSS stream to use
--duration DURATION (=1)	length of data to plot (units: seconds)
--period PERIOD (=1)	offset between subsequent plots (units: seconds)
--offset OFFSET (=0)	offset into each period of data to plot (units: seconds)
--scale-x SCALE_X (=1)	scale X coordinates by this number
--wait	wait for each plot to be acknowledged
--psd	plot power spectral density (default if no other plots are specified)
--time	plot time-domain signal (note: limited to 1024 samples)
--psd-bins arg (=4096)	number of frequency bins for PSD
--exit-after-first-plot	wait for first plot to be acknowledged, then exit
--plot-title-suffix arg	append string to plot titles

characterize-channel-tx

Type signature: (->raw)

Help

Usage:

characterize-channel-rx [OPTION]... TX_CONFIG

Allowed options:

Option	Description
--help	produce help message
--tx_config TX_CONFIG	config string (run "sdgps help" for examples)
--tx-gnss-stream arg	GNSS stream from TX_CONFIG to use to regenerate PRN code (default: GNSS_STREAM)
--gnss-stream GNSS_STREAM (=0)	GNSS stream to use
--duration DURATION (=1)	length of data to plot (units: seconds)
--period PERIOD (=1)	offset between subsequent plots (units: seconds)
--offset OFFSET (=0)	offset into each period of data to plot (units: seconds)
--scale-x SCALE_X (=1)	scale X coordinates by this number
--wait	wait for each plot to be acknowledged
--psd	plot power spectral density (default if no other plots are specified)
--time	plot time-domain signal (note: limited to 1024 samples)
--psd-bins arg (=4096)	number of frequency bins for PSD
--exit-after-first-plot	wait for first plot to be acknowledged, then exit
--plot-title-suffix arg	append string to plot titles