{
  "fictional": true,
  "partnerData": false,
  "encoding": "IEEE-754 float32 little-endian, row-major. Float32 rounding is the declared native encoding; no physical ADC quantization or uncertainty is implied.",
  "pressure": {
    "rateHz": 100,
    "sampleCount": 24000,
    "unit": "Pa",
    "toneHz": 4,
    "amplitudePa": 0.08,
    "noisePeakToPeakPa": 0.01,
    "seed": 14017,
    "clipping": "none in authored model; no instrument saturation model",
    "gaps": [],
    "audibleDerivative": "not provided; no silent time or pitch shift"
  },
  "spectrum": {
    "window": "periodic Hann",
    "windowSamples": 800,
    "hopSamples": 400,
    "sampleRateHz": 100,
    "frameCount": 59,
    "binCount": 401,
    "frequencyStepHz": 0.125,
    "unit": "Pa2/Hz",
    "normalization": "abs(DFT(x*w))^2 / (fs*sum(w^2)); double interior positive-frequency bins; retain DC and Nyquist once",
    "time": "window start; each window covers 8 seconds",
    "detrend": "none",
    "source": "pressure.f32"
  },
  "magnetic": {
    "axes": [
      "east",
      "north",
      "up"
    ],
    "frame": "authored local axes, no measured alignment",
    "rateHz": 1,
    "unit": "uT",
    "periodsSeconds": [
      60,
      80,
      120
    ],
    "phaseRadians": [
      0,
      1,
      2
    ],
    "magnitude": "sqrt(east^2+north^2+up^2), computed from retained float32 components then encoded float32",
    "source": "magnetic.f32"
  },
  "radar": {
    "cadenceSeconds": 2,
    "shape": [
      120,
      64,
      64
    ],
    "axes": [
      "time",
      "Doppler",
      "excess path length"
    ],
    "dopplerHz": [
      -200,
      200
    ],
    "excessPathKm": [
      0,
      30
    ],
    "unit": "dB synthetic SNR",
    "detection": "maximum cell per authored map; no detection probability or threshold claim",
    "noiseFloor": "authored scale; not estimated from receiver noise",
    "geometry": "No transmitter/receiver geometry supplied; no target range, speed or Earth track conversion",
    "iqRelation": "independent bounded reference, not an input to these authored maps"
  },
  "iq": {
    "independent": true,
    "rateHz": 2000000,
    "durationSeconds": 0.1,
    "shape": [
      200000,
      2
    ],
    "axes": [
      "sample",
      "I/Q"
    ],
    "toneHz": 100000,
    "unit": "1",
    "amplitude": 1,
    "timeAlignment": "unknown; independent relative clock",
    "scope": "Dimensionless synthetic baseband tone, not recorded RF and not a radar-map reproduction input"
  },
  "timing": "Field streams share authored UTC; no hardware synchronization measured. IQ clock is independent.",
  "calibration": "No physical calibration or uncertainty characterization performed."
}