Sylphase SDGPS
The software-defined GPS(/GNSS) toolkit
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 (see 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 (see 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