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82 lines
3.8 KiB
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82 lines
3.8 KiB
Plaintext
.\" Manpage for gnss\-sdr.
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.\" SPDX-License-Identifier: GPL-3.0-or-later
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.\" SPDX-FileCopyrightText: Carles Fernandez-Prades <carles.fernandez(at)cttc.es>
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.\" Contact carles.fernandez@cttc.es to correct errors or typos.
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.TH gnss\-sdr 1 "29 Jul 2019" "0.0.11" "gnss\-sdr man page"
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.SH NAME
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\fBgnss\-sdr\fR \- GNSS Software Defined Receiver.
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.SH SYNOPSIS
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\fBgnss\-sdr \-c=\fR\fI<path\-to\-configuration\-file>\fR [OPTION]...
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.SH DESCRIPTION
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\fBgnss\-sdr\fR is a Global Navigation Satellite Systems Software Defined Receiver written in C++. It implements all the signal processing chain, taking as input raw samples coming from the output of an Analog\-to\-Digital Converter, and processing them up to the computation of the Position\-Velocity\-Time solution, including the generation of code and phase measurements.
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\.TP
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\fBgnss\-sdr\fR is able to work with raw data files or, if there is computational power enough, in real time with suitable radio frequency front\-ends. The whole receiver is defined in a single configuration file, and therefore users can define theirs.
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\.TP
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There is some flexibility in how flags may be specified. The following examples are equivalent:
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\.RS 8
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\.TP
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gnss\-sdr \-c=/home/user/rx.conf
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\.TP
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gnss\-sdr \-\-c=/home/user/rx.conf
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\.TP
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gnss\-sdr \-c /home/user/rx.conf
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\.TP
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gnss\-sdr \-\-c /home/user/rx.conf
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\.RE
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.SH OPTIONS
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\fBgnss\-sdr\fR takes the following options:
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.TP
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\fB\-c=\fR\fI<path\-to\-configuration\-file>\fR or \fB\-config_file=\fR\fI<path\-to\-configuration\-file>\fR
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Set the configuration file. This flag is mandatory.
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.TP
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\fB\-s=\fR\fI<path\-to\-raw\-signal\-file>\fR or \fB\-signal_source=\fR\fI<path\-to\-raw\-signal\-file>\fR
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If defined, path to the file containing the signal samples (overrides the data file specified in the configuration file).
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.TP
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\fB\-log_dir=\fR\fI<path\-to\-directory>\fR
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If defined, overrides the default directory where logs are saved.
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.TP
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\fB\-doppler_max=\fR\fI<doppler_max>\fR
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If defined, maximum Doppler value in the search grid, in Hz (overrides the configuration file).
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.TP
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\fB\-doppler_step=\fR\fI<doppler_step>\fR
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If defined, sets the frequency step in the search grid, in Hz (overrides the configuration file).
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.TP
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\fB\-cn0_samples=\fR\fI<samples>\fR
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Number of correlators outputs (one per integration time) used for CN0 estimation. It defaults to 20 outputs.
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.TP
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\fB\-cn0_min=\fR\fI<cn0_min>\fR
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Minimum valid CN0 (in dB-Hz). It defaults to 25 dB-Hz. If set, it overrides the configuration file.
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.TP
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\fB\-max_lock_fail=\fR\fI<max_lock_fail>\fR
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Maximum number of lock failures before dropping a satellite. It defaults to 50 failures. If set, it overrides the configuration file.
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.TP
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\fB\-carrier_lock_th=\fR\fI<carrier_lock_th>\fR
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Carrier lock error threshold (in rad). It defaults to 0.85 rad (48.7 degrees). If set, it overrides the configuration file.
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.TP
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\fB\-dll_bw_hz=\fR\fI<dll_bw_hz>\fR
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If defined, bandwidth of the DLL low pass filter, in Hz (overrides the configuration file).
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.TP
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\fB\-pll_bw_hz=\fR\fI<pll_bw_hz>\fR
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If defined, bandwidth of the PLL low pass filter, in Hz (overrides the configuration file).
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.TP
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\fB\-RINEX_version=\fI<version>\fR
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If defined, specifies the RINEX version (2.11 or 3.02). Default: "3.02". Overrides the configuration file.
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.TP
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\fB\-version\fR
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Print program version and exit.
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.TP
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\fB\-help\fR
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Print all the available commandline flags and exit.
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.SH SEE ALSO
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.BR volk_gnsssdr_profile (1)
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\.TP
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Examples of configuration files available at: ${prefix}/share/gnss\-sdr/conf, where ${prefix} uses to be /usr or /usr/local.
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\.TP
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Check https://gnss\-sdr.org for more information.
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.SH BUGS
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Please report bugs at https://github.com/gnss-sdr/gnss-sdr/issues
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.SH AUTHOR
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Carles Fernandez\-Prades (carles.fernandez@cttc.es)
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\.TP
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This software package has been developed at CTTC (Centre Tecnologic de Telecomunicacions de Catalunya, http://www.cttc.es) with contributions from around the world.
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