mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2025-01-09 17:00:34 +00:00
46 lines
2.4 KiB
Markdown
46 lines
2.4 KiB
Markdown
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obsdiff
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-------
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[comment]: # (
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SPDX-License-Identifier: GPL-3.0-or-later
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)
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[comment]: # (
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SPDX-FileCopyrightText: Javier Arribas, 2020. <jarribas@cttc.es>
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)
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This program computes Single-difference and Double-difference from RINEX observation files.
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## Building
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This program is built along with GNSS-SDR if the options `ENABLE_UNIT_TESTING_EXTRA` or `ENABLE_SYSTEM_TESTING_EXTRA` are set to `ON` when calling CMake:
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```
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$ cmake -DENABLE_SYSTEM_TESTING_EXTRA=ON ..
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$ make obsdiff
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$ sudo make install
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```
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The last step is optional. Without it, you still will get the executable at `../install/obsdiff`.
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## Usage
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```
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$ obsdiff --ref_rinex_obs=reference.20o --test_rinex_obs=rover.20o
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```
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Available command-line flags:
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| **flag** | **Default value** | **Description** |
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|:------------------------:|:-----------------:|:-----------------|
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| `skip_obs_transitory_s` | `30.0` | Skip the initial observable outputs to avoid transitory results [s]. |
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| `skip_obs_ends_s` | `5.0` | Skip the lasts observable outputs to avoid transitory results [s]. |
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| `single_diffs` | `false` | [`true`, `false`]: If `true`, the program also computes the single difference errors for [Carrier Phase](https://gnss-sdr.org/docs/sp-blocks/observables/#carrier-phase-measurement) and [Doppler](https://gnss-sdr.org/docs/sp-blocks/observables/#doppler-shift-measurement) measurements (requires LO synchronization between receivers). |
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| `compare_with_5X` | `false` | [`true`, `false`]: If `true`, compares the E5a Doppler and Carrier Phases with the E5 full Bw in RINEX (expect discrepancy due to the center frequencies difference). |
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| `dupli_sat` | `false` | [`true`, `false`]: If `true`, enables special observable test mode where the scenario contains duplicated satellite orbits. |
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| `dupli_sat_prns` | `1,2,3,4` | List of duplicated satellites PRN pairs (_i.e._, `1,2,3,4` indicates that the PRNs 1,2 share the same orbit. The same applies for PRNs 3,4). |
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| `ref_rinex_obs` | `reference.obs` | Filename of reference RINEX observation file. |
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| `test_rinex_obs` | `test.obs` | Filename of tested RINEX observation file. |
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| `show_plots` | `true` | [`true`, `false`]: If `true`, and if [gnuplot](http://www.gnuplot.info/) is found on the system, displays results plots on screen. Please set it to `false` for non-interactive testing. |
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