87 lines
2.7 KiB
Python
87 lines
2.7 KiB
Python
"""Neutral preprocessing-set helpers for Kamil ADC acquisition."""
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from __future__ import annotations
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import logging
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import time
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import numpy as np
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from python_app.models.dataset_model import ComboKey, SweepCollection, TraceData
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from python_app.models.run_config_model import ComboModel, RunConfigModel
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logger = logging.getLogger(__name__)
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def build_kamil_adc_neutral_s21_sets(
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config: RunConfigModel,
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point_count: int,
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) -> tuple[SweepCollection, SweepCollection]:
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"""Build neutral S21 calibration/reference collections for the Kamil ADC radar.
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The calibration uses unit S21 (1+0j) and the reference uses zero S21 across
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every configured combo, so applying them in the preprocessing pipeline leaves
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the input S21 unchanged. Returns the ``(calibration, reference)`` collections.
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"""
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if not config.is_kamil_adc:
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raise ValueError("Neutral Kamil ADC sets require radar.model='kamil_adc'")
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points = int(point_count)
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if points <= 0:
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raise ValueError("Kamil ADC neutral set point count must be > 0")
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combos = list(config.combos)
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if not combos:
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combos = RunConfigModel.build_full_combos(config.input_switch.positions, config.output_switch.positions)
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if not combos:
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raise ValueError("Kamil ADC neutral sets require at least one switch combo")
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frequency_hz = np.linspace(
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float(config.radar.sweep.start_hz),
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float(config.radar.sweep.stop_hz),
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points,
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dtype=np.float32,
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)
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now_ns = time.monotonic_ns()
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calibration = _neutral_collection(
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combos=combos,
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frequency_hz=frequency_hz,
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s21_value=np.complex64(1.0 + 0.0j),
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monotonic_ns=now_ns,
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)
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reference = _neutral_collection(
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combos=combos,
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frequency_hz=frequency_hz,
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s21_value=np.complex64(0.0 + 0.0j),
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monotonic_ns=now_ns,
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)
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logger.info("Built neutral Kamil ADC S21 sets: combos=%d points=%d", len(combos), points)
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return calibration, reference
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def _neutral_collection(
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*,
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combos: list[ComboModel],
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frequency_hz: np.ndarray,
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s21_value: np.complex64,
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monotonic_ns: int,
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) -> SweepCollection:
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traces = []
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for combo in combos:
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point_count = int(frequency_hz.size)
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traces.append(
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TraceData(
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combo=ComboKey(input=int(combo.input), output=int(combo.output)),
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frequency_hz=frequency_hz.copy(),
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s11=np.zeros(point_count, dtype=np.complex64),
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s21=np.full(point_count, s21_value, dtype=np.complex64),
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)
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)
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return SweepCollection(
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collection_id=1,
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monotonic_ns=monotonic_ns,
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traces=traces,
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capture_start_ns=monotonic_ns,
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capture_end_ns=monotonic_ns,
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)
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