Laikad: the basics for ublox msg processing (#24359)
* Add laikad that receives ublox messages and publishes corrected measurements and position fix * types * cleanup * laikad version 1 with uncorrected measurements * push * Fix glonass frequency and delete redundant test * Update after cereal and cleanup * Add test, fix laikad and remove process replay for now * update laika * add hatanaka to packages. Used to decompress orbit data * Fix pippull/24404/head^2
Gijs Koning
4 years ago
committed by
GitHub
parent
df8f024e19
commit
b64fe6e339
5 changed files with 170 additions and 3 deletions
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Subproject commit 226adc655e1488474468a97ab4a7705aad7e5837 |
Subproject commit 1fbc6780d5184efd5ccf4518a01fe947ffbb4ba0 |
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#!/usr/bin/env python3 |
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from typing import List |
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from cereal import log, messaging |
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from laika import AstroDog |
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from laika.helpers import UbloxGnssId |
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from laika.raw_gnss import GNSSMeasurement, calc_pos_fix, correct_measurements, process_measurements, read_raw_ublox |
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def correct_and_pos_fix(processed_measurements: List[GNSSMeasurement], dog: AstroDog): |
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# pos fix needs more than 5 processed_measurements |
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pos_fix = calc_pos_fix(processed_measurements) |
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if len(pos_fix) == 0: |
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return [], [] |
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est_pos = pos_fix[0][:3] |
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corrected = correct_measurements(processed_measurements, est_pos, dog) |
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return calc_pos_fix(corrected), corrected |
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def process_ublox_msg(ublox_msg, dog, ublox_mono_time: int): |
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if ublox_msg.which == 'measurementReport': |
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report = ublox_msg.measurementReport |
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if len(report.measurements) == 0: |
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return None |
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new_meas = read_raw_ublox(report) |
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processed_measurements = process_measurements(new_meas, dog) |
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corrected = correct_and_pos_fix(processed_measurements, dog) |
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pos_fix, _ = corrected |
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# todo send corrected messages instead of processed_measurements. Need fix for when having less than 6 measurements |
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correct_meas_msgs = [create_measurement_msg(m) for m in processed_measurements] |
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# pos fix can be an empty list if not enough correct measurements are available |
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if len(pos_fix) > 0: |
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corrected_pos = pos_fix[0][:3].tolist() |
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else: |
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corrected_pos = [0., 0., 0.] |
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dat = messaging.new_message('gnssMeasurements') |
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dat.gnssMeasurements = { |
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"position": corrected_pos, |
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"ubloxMonoTime": ublox_mono_time, |
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"correctedMeasurements": correct_meas_msgs |
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} |
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return dat |
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def create_measurement_msg(meas: GNSSMeasurement): |
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c = log.GnssMeasurements.CorrectedMeasurement.new_message() |
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ublox_gnss_id = meas.ublox_gnss_id |
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if ublox_gnss_id is None: |
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# todo never happens will fix in later pr |
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ublox_gnss_id = UbloxGnssId.GPS |
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c.constellationId = ublox_gnss_id.value |
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c.svId = int(meas.prn[1:]) |
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c.glonassFrequency = meas.glonass_freq if meas.ublox_gnss_id == UbloxGnssId.GLONASS else 0 |
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c.pseudorange = float(meas.observables['C1C']) # todo should be observables_final when using corrected measurements |
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c.pseudorangeStd = float(meas.observables_std['C1C']) |
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c.pseudorangeRate = float(meas.observables['D1C']) # todo should be observables_final when using corrected measurements |
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c.pseudorangeRateStd = float(meas.observables_std['D1C']) |
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c.satPos = meas.sat_pos_final.tolist() |
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c.satVel = meas.sat_vel.tolist() |
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return c |
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def main(): |
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dog = AstroDog() |
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sm = messaging.SubMaster(['ubloxGnss']) |
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pm = messaging.PubMaster(['gnssMeasurements']) |
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while True: |
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sm.update() |
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# Todo if no internet available use latest ephemeris |
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if sm.updated['ubloxGnss']: |
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ublox_msg = sm['ubloxGnss'] |
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msg = process_ublox_msg(ublox_msg, dog, sm.logMonoTime['ubloxGnss']) |
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if msg is None: |
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msg = messaging.new_message('gnssMeasurements') |
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pm.send('gnssMeasurements', msg) |
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if __name__ == "__main__": |
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main() |
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#!/usr/bin/env python3 |
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import unittest |
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from datetime import datetime |
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from laika.helpers import UbloxGnssId |
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from laika.gps_time import GPSTime |
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from laika.raw_gnss import GNSSMeasurement |
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from selfdrive.locationd.laikad import create_measurement_msg |
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class TestLaikad(unittest.TestCase): |
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def test_create_msg_without_errors(self): |
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gpstime = GPSTime.from_datetime(datetime.now()) |
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meas = GNSSMeasurement('G01', gpstime.week, gpstime.tow, {'C1C': 0., 'D1C': 0.}, {'C1C': 0., 'D1C': 0.}, ublox_gnss_id=UbloxGnssId.GPS) |
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msg = create_measurement_msg(meas) |
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self.assertEqual(msg.constellationId, 'gps') |
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if __name__ == "__main__": |
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unittest.main() |
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