Initial Galileo receiver and SignalSim integration

2026-07-30 23:26:03 +03:00
commit 2a6ccfc23d
153 changed files with 8080 additions and 0 deletions
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+import numpy as np
+
+from galileo_rx.acquisition.acquisition_manager import AcquisitionManager
+from galileo_rx.config import AcquisitionConfig
+from galileo_rx.signal_profiles import galileo_e1_profile
+from galileo_rx.signals.code_provider import SyntheticCodeProvider
+from galileo_rx.signals.signal_generator import ChannelModelConfig, SatelliteSignalConfig, SyntheticSignalGenerator
+
+
+def test_e1c_secondary_wipeoff_for_eight_ms() -> None:
+    fs = 4.092e6
+    profile = galileo_e1_profile()
+    provider = SyntheticCodeProvider()
+    generator = SyntheticSignalGenerator(
+        profile, provider, fs,
+        satellites=[SatelliteSignalConfig(8, "E1C", code_delay_chips=12.0, doppler_hz=500.0)],
+        channel=ChannelModelConfig(add_awgn=False),
+    )
+    samples, _ = generator.generate(int(0.008 * fs))
+    config = AcquisitionConfig(
+        doppler_min_hz=500,
+        doppler_max_hz=500,
+        doppler_step_hz=250,
+        coherent_integration_ms=8,
+        noncoherent_accumulations=1,
+        detection_threshold=1.5,
+        zero_padding_mode="none",
+        secondary_code_mode="wipeoff",
+        parabolic_interpolation=False,
+    )
+    result, _ = AcquisitionManager(profile, provider, fs, config).acquire_one(samples, "E1C", 8)
+    assert result.detected and abs(result.code_phase_chips - 12.0) < 0.3
+
+
+def test_e1b_bit_transition_hypothesis() -> None:
+    fs = 4.092e6
+    profile = galileo_e1_profile()
+    provider = SyntheticCodeProvider()
+    generator = SyntheticSignalGenerator(
+        profile, provider, fs,
+        satellites=[SatelliteSignalConfig(9, "E1B", code_delay_chips=20.0, navigation_bits=[1, -1])],
+        channel=ChannelModelConfig(add_awgn=False),
+    )
+    samples, _ = generator.generate(int(0.008 * fs))
+    config = AcquisitionConfig(
+        doppler_min_hz=0,
+        doppler_max_hz=0,
+        doppler_step_hz=250,
+        coherent_integration_ms=8,
+        noncoherent_accumulations=1,
+        detection_threshold=1.5,
+        zero_padding_mode="none",
+        bit_transition_mode="hypothesis",
+        parabolic_interpolation=False,
+    )
+    result, _ = AcquisitionManager(profile, provider, fs, config).acquire_one(samples, "E1B", 9)
+    assert result.detected and abs(result.code_phase_chips - 20.0) < 0.3