mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-11-15 06:14:58 +00:00
111 lines
4.3 KiB
Python
111 lines
4.3 KiB
Python
"""
|
|
dll_pll_veml_plot_sample.py
|
|
|
|
Reads GNSS-SDR Tracking dump binary file using the provided function and
|
|
plots some internal variables
|
|
|
|
Irene Pérez Riega, 2023. iperrie@inta.es
|
|
|
|
Modifiable in the file:
|
|
sampling_freq - Sampling frequency [Hz]
|
|
plot_last_outputs - If 0 -> process everything / number of items processed
|
|
channels - Number of channels
|
|
first_channel - Number of the first channel
|
|
doppler_opt - = 1 -> Plot // = 0 -> No plot
|
|
path - Path to folder which contains raw files
|
|
fig_path - Path where doppler plots will be save
|
|
'trk_dump_ch' - Fixed part of the tracking dump files names
|
|
|
|
-----------------------------------------------------------------------------
|
|
|
|
GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
|
|
This file is part of GNSS-SDR.
|
|
|
|
Copyright (C) 2022 (see AUTHORS file for a list of contributors)
|
|
SPDX-License-Identifier: GPL-3.0-or-later
|
|
|
|
-----------------------------------------------------------------------------
|
|
"""
|
|
|
|
import os
|
|
import numpy as np
|
|
import matplotlib.pyplot as plt
|
|
from lib.dll_pll_veml_read_tracking_dump import dll_pll_veml_read_tracking_dump
|
|
from lib.plotVEMLTracking import plotVEMLTracking
|
|
|
|
trackResults = []
|
|
settings = {}
|
|
GNSS_tracking = []
|
|
|
|
# ---------- CHANGE HERE:
|
|
sampling_freq = 3000000
|
|
plot_last_outputs = 0
|
|
channels = 5
|
|
first_channel = 0
|
|
doppler_opt = 1
|
|
settings['numberOfChannels'] = channels
|
|
|
|
path = '/home/labnav/Desktop/TEST_IRENE/tracking'
|
|
fig_path = '/home/labnav/Desktop/TEST_IRENE/PLOTS/Doppler'
|
|
|
|
for N in range(1, channels+1):
|
|
tracking_log_path = os.path.join(path,
|
|
f'trk_dump_ch{N-1+first_channel}.dat')
|
|
GNSS_tracking.append(dll_pll_veml_read_tracking_dump(tracking_log_path))
|
|
|
|
# GNSS-SDR format conversion to Python GPS receiver
|
|
for N in range (1, channels+1):
|
|
if 0 < plot_last_outputs < len(GNSS_tracking[N - 1].get("code_freq_hz")):
|
|
start_sample = (len(GNSS_tracking[N-1].get("code_freq_hz")) -
|
|
plot_last_outputs)
|
|
else:
|
|
start_sample = 0
|
|
|
|
trackResult = {
|
|
'status': 'T', # fake track
|
|
'codeFreq': np.copy(GNSS_tracking[N-1]["code_freq_hz"][start_sample:]),
|
|
'carrFreq': np.copy(GNSS_tracking[N-1]["carrier_doppler_hz"][start_sample:]),
|
|
'dllDiscr': np.copy(GNSS_tracking[N-1]["code_error"][start_sample:]),
|
|
'dllDiscrFilt': np.copy(GNSS_tracking[N-1]["code_nco"][start_sample:]),
|
|
'pllDiscr': np.copy(GNSS_tracking[N-1]["carr_error"][start_sample:]),
|
|
'pllDiscrFilt': np.copy(GNSS_tracking[N-1]["carr_nco"][start_sample:]),
|
|
|
|
'I_P': np.copy(GNSS_tracking[N-1]["P"][start_sample:]),
|
|
'Q_P': np.zeros(len(GNSS_tracking[N-1]["P"][start_sample:])),
|
|
|
|
'I_VE': np.copy(GNSS_tracking[N-1]["VE"][start_sample:]),
|
|
'I_E': np.copy(GNSS_tracking[N-1]["E"][start_sample:]),
|
|
'I_L': np.copy(GNSS_tracking[N-1]["L"][start_sample:]),
|
|
'I_VL': np.copy(GNSS_tracking[N-1]["VL"][start_sample:]),
|
|
'Q_VE': np.zeros(len(GNSS_tracking[N-1]["VE"][start_sample:])),
|
|
'Q_E': np.zeros(len(GNSS_tracking[N-1]["E"][start_sample:])),
|
|
'Q_L': np.zeros(len(GNSS_tracking[N-1]["L"][start_sample:])),
|
|
'Q_VL': np.zeros(len(GNSS_tracking[N-1]["VL"][start_sample:])),
|
|
'data_I': np.copy(GNSS_tracking[N-1]["prompt_I"][start_sample:]),
|
|
'data_Q': np.copy(GNSS_tracking[N-1]["prompt_Q"][start_sample:]),
|
|
'PRN': np.copy(GNSS_tracking[N-1]["PRN"][start_sample:]),
|
|
'CNo': np.copy(GNSS_tracking[N-1]["CN0_SNV_dB_Hz"][start_sample:]),
|
|
'prn_start_time_s': np.copy(GNSS_tracking[N-1]["PRN_start_sample"]
|
|
[start_sample:]) / sampling_freq
|
|
}
|
|
trackResults.append(trackResult)
|
|
|
|
# Plot results:
|
|
plotVEMLTracking(N,trackResults,settings)
|
|
|
|
# Plot Doppler according to selected in doppler_opt variable:
|
|
if doppler_opt == 1:
|
|
if not os.path.exists(fig_path):
|
|
os.makedirs(fig_path)
|
|
|
|
plt.figure()
|
|
plt.plot(trackResults[N - 1]['prn_start_time_s'],
|
|
[x/1000 for x in GNSS_tracking[N - 1]['carrier_doppler_hz']
|
|
[start_sample:]])
|
|
plt.xlabel('Time(s)')
|
|
plt.ylabel('Doppler(KHz)')
|
|
plt.title('Doppler frequency channel ' + str(N))
|
|
|
|
plt.savefig(os.path.join(fig_path, f'Doppler_freq_ch_{N}.png'))
|
|
plt.show()
|