95 lines
4.3 KiB
Python
95 lines
4.3 KiB
Python
"""Neutral preprocessing grids must preserve the actual radar data unchanged."""
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from __future__ import annotations
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import unittest
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import numpy as np
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from python_app.hardware_full.point_target_mock_service import PointTargetMockService
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from python_app.models.run_config_schema import RunConfigModel
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from python_app.workflows.neutral_preprocess import build_neutral_s21_sets, supports_neutral_preprocess_sets
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def _rph_config(*, points: int = 5) -> RunConfigModel:
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return RunConfigModel.from_dict(
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{
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"radar": {
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"model": "rph_radar",
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"rph_radar": {
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"band": {"start_hz": 2_100_000_000.0, "stop_hz": 5_500_000_000.0, "points": points},
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},
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},
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"switches": {"port1": {"positions": 1}, "port2": {"positions": 2}},
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"run": {"combos": [{"input": 0, "output": 0}, {"input": 1, "output": 0}]},
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}
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)
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class RphRadarNeutralPreprocessTest(unittest.TestCase):
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def test_builds_passthrough_s21_sets_on_band_grid(self) -> None:
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calibration, reference = build_neutral_s21_sets(_rph_config(points=5))
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expected_frequency = np.linspace(2_100_000_000.0, 5_500_000_000.0, 5).astype(np.float32)
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self.assertEqual(len(calibration.traces), 2)
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self.assertEqual(len(reference.traces), 2)
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self.assertEqual(
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[(trace.combo.input, trace.combo.output) for trace in calibration.traces],
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[(0, 0), (1, 0)],
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)
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for trace in calibration.traces:
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np.testing.assert_array_equal(trace.frequency_hz, expected_frequency)
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np.testing.assert_array_equal(trace.s21, np.ones(5, dtype=np.complex64))
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for trace in reference.traces:
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np.testing.assert_array_equal(trace.frequency_hz, expected_frequency)
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np.testing.assert_array_equal(trace.s21, np.zeros(5, dtype=np.complex64))
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def test_grid_matches_processor_grid(self) -> None:
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"""The neutral axis must be byte-identical to the acquisition grid."""
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from python_app.hardware_full.rph_radar.processing import RphRadarSweepProcessor
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config = _rph_config(points=17)
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processor = RphRadarSweepProcessor(config.radar.rph_radar)
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calibration, _reference = build_neutral_s21_sets(config)
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np.testing.assert_array_equal(calibration.traces[0].frequency_hz, processor.grid_hz)
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def test_rejects_degenerate_band(self) -> None:
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with self.assertRaisesRegex(ValueError, "band.points must be"):
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build_neutral_s21_sets(_rph_config(points=1))
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def test_dtypes_are_float32_and_complex64(self) -> None:
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calibration, _reference = build_neutral_s21_sets(_rph_config())
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trace = calibration.traces[0]
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self.assertEqual(trace.frequency_hz.dtype, np.float32)
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self.assertEqual(trace.s21.dtype, np.complex64)
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def test_calibration_s21_is_a_nonzero_divisor(self) -> None:
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# The preprocessor divides measured/calibration, so calibration S21
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# must never be zero — that is the whole point of the '1+0j neutral' contract.
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calibration, _reference = build_neutral_s21_sets(_rph_config())
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for trace in calibration.traces:
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self.assertTrue(bool(np.all(trace.s21 != 0)))
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def test_single_mock_grid_is_exact_and_neutral_s21_is_passthrough(self) -> None:
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config = RunConfigModel.from_dict({"radar": {
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"model": "librevna", "driver_mode": "mock",
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"sweep": {"start_hz": 1e6, "stop_hz": 6e9, "points": 201},
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}})
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self.assertTrue(supports_neutral_preprocess_sets(config))
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radar = PointTargetMockService(config)
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radar.configure(config.radar.sweep)
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measured = radar.acquire_collection()
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calibration, reference = build_neutral_s21_sets(config)
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for trace, cal, ref in zip(measured.traces, calibration.traces, reference.traces):
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np.testing.assert_array_equal(trace.frequency_hz, cal.frequency_hz)
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np.testing.assert_array_equal(trace.frequency_hz, ref.frequency_hz)
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np.testing.assert_array_equal(trace.s21 / cal.s21 - ref.s21, trace.s21)
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def test_native_single_axis_remains_outside_verified_shortcut(self) -> None:
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config = RunConfigModel.from_dict({"radar": {"model": "librevna", "driver_mode": "native"}})
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self.assertFalse(supports_neutral_preprocess_sets(config))
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if __name__ == "__main__":
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unittest.main()
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