{
  "design": "quasi-Yagi pair @ 0.5\u03bb (linked)",
  "label": "gerber_yagi_finder_0p5lam",
  "finder": "rotating monopulse (amplitude, log \u03a3/\u0394)",
  "target_mhz": 915.0,
  "pair_spacing_mm": 163.9,
  "spacing_lambda": 0.5,
  "sensor_noise_db": 3.0,
  "background_db": -15.0,
  "detector_resolution_db": 1.0,
  "measurements_per_deg": 100,
  "effective_noise_per_deg_db": 0.301,
  "signal_to_background_db": 15.0,
  "antenna_delta_null_db": -27.6,
  "effective_delta_null_floor_db": -13.7,
  "sum_hpbw_deg": 44.0,
  "boresight_dead_zone_half_deg": 6.0,
  "bearing_accuracy_deg_1sigma": 0.14,
  "power_ratio_db": 5.0,
  "resolution_deg_fit_u": 5.3,
  "resolution_deg_sum_beam_dip": 28.2,
  "resolution_linear_at_100m_m": 9.2,
  "resolution_linear_at_1km_m": 92.0,
  "background_sweep_db": [
    -5.0,
    -6.2,
    -7.5,
    -8.8,
    -10.0,
    -11.2,
    -12.5,
    -13.8,
    -15.0
  ],
  "resolution_deg_fit_u_vs_background": [
    13.6,
    12.2,
    11.2,
    10.0,
    8.9,
    8.1,
    7.4,
    5.5,
    5.3
  ],
  "bearing_accuracy_deg_vs_background": [
    0.31,
    0.26,
    0.23,
    0.21,
    0.19,
    0.17,
    0.15,
    0.14,
    0.14
  ],
  "readings_per_deg_sweep": [
    1,
    2,
    3,
    6,
    10,
    18,
    32,
    56,
    100
  ],
  "resolution_deg_fit_u_vs_readings": [
    26.3,
    19.7,
    17.1,
    13.3,
    11.0,
    9.2,
    7.8,
    6.9,
    5.3
  ],
  "bearing_accuracy_deg_vs_readings": [
    1.27,
    0.94,
    0.82,
    0.58,
    0.46,
    0.32,
    0.25,
    0.19,
    0.14
  ],
  "spacing_sweep_lambda": [
    0.35,
    0.422,
    0.494,
    0.5,
    0.567,
    0.639,
    0.711,
    0.783,
    0.856,
    0.928,
    1.0
  ],
  "resolution_deg_fit_u_vs_spacing": [
    5.3,
    5.3,
    5.3,
    5.3,
    5.3,
    5.3,
    5.3,
    5.3,
    5.3,
    5.3,
    5.3
  ],
  "sum_hpbw_deg_vs_spacing": [
    8.0,
    8.0,
    8.0,
    8.0,
    12.0,
    12.0,
    12.0,
    12.0,
    12.0,
    12.0,
    12.0
  ],
  "note": "rotating antenna -> absolute bearing (no sign ambiguity); accuracy is single-emitter precision; resolution is from FITTING the u=\u03a3\u2212\u0394 scan (1- vs 2-source model, CFAR 5%) for UNEQUAL emitters \u2014 WORST CASE with the two received powers within 5 dB. Swept vs background \u22125\u2026\u221215 dB, vs 1\u2026100 readings/\u00b0, and vs pair spacing 0.35\u20261.00\u03bb (shape-preserving interpolation through 1 full-wave anchor spacings; >1\u03bb shaded = grating lobes \u2192 ambiguous bearing).",
  "n_trials": 4000,
  "fit_demo_separation_deg": 20.0,
  "fit_power_ratio_db": 5.3,
  "fit_power_ratio_sd_db": 0.3,
  "fit_separation_est_deg": 19.4,
  "fit_separation_sd_deg": 0.5,
  "fit_centre_est_deg": -0.1,
  "fit_centre_sd_deg": 0.39,
  "fit_floor_est_db": -14.5,
  "fit_floor_sd_db": 0.15,
  "fit_note": "continuous 2-source LS fit of the u=\u03a3\u2212\u0394 scan with pair CENTRE free and the noise FLOOR estimated separately from the rotation minimum (not assumed known); the centre\u2194amplitude-ratio degeneracy dominates the power-ratio uncertainty."
}