{
  "design": "gerber'd quasi-Yagi pair (linked)",
  "label": "gerber_yagi_finder",
  "finder": "rotating monopulse (amplitude, log \u03a3/\u0394)",
  "target_mhz": 915.0,
  "pair_spacing_mm": 239.3,
  "spacing_lambda": 0.73,
  "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": -31.0,
  "effective_delta_null_floor_db": -15.0,
  "sum_hpbw_deg": 36.0,
  "boresight_dead_zone_half_deg": 6.0,
  "bearing_accuracy_deg_1sigma": 0.1,
  "power_ratio_db": 5.0,
  "resolution_deg_fit_u": 5.0,
  "resolution_deg_sum_beam_dip": 22.8,
  "resolution_linear_at_100m_m": 8.8,
  "resolution_linear_at_1km_m": 88.0,
  "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": [
    12.1,
    11.1,
    9.6,
    8.8,
    8.1,
    7.6,
    5.6,
    5.3,
    5.0
  ],
  "bearing_accuracy_deg_vs_background": [
    0.24,
    0.21,
    0.18,
    0.16,
    0.15,
    0.14,
    0.13,
    0.11,
    0.1
  ],
  "readings_per_deg_sweep": [
    1,
    2,
    3,
    6,
    10,
    18,
    32,
    56,
    100
  ],
  "resolution_deg_fit_u_vs_readings": [
    23.5,
    17.2,
    15.2,
    11.3,
    9.8,
    8.2,
    7.1,
    5.4,
    5.1
  ],
  "bearing_accuracy_deg_vs_readings": [
    0.81,
    0.62,
    0.52,
    0.4,
    0.31,
    0.24,
    0.18,
    0.14,
    0.1
  ],
  "spacing_sweep_lambda": [
    0.35,
    0.4,
    0.439,
    0.5,
    0.52,
    0.528,
    0.54,
    0.56,
    0.58,
    0.6,
    0.617,
    0.706,
    0.731,
    0.794,
    0.85,
    0.883,
    0.972,
    1.0,
    1.061,
    1.15
  ],
  "resolution_deg_fit_u_vs_spacing": [
    14.9,
    14.9,
    11.2,
    5.3,
    5.4,
    5.3,
    5.2,
    5.1,
    5.2,
    5.2,
    5.2,
    5.1,
    5.0,
    4.8,
    4.7,
    4.7,
    4.6,
    4.6,
    4.6,
    4.5
  ],
  "sum_hpbw_deg_vs_spacing": [
    56.0,
    56.0,
    52.0,
    48.0,
    48.0,
    48.0,
    48.0,
    44.0,
    44.0,
    44.0,
    44.0,
    40.0,
    36.0,
    36.0,
    32.0,
    32.0,
    28.0,
    28.0,
    28.0,
    24.0
  ],
  "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\u20261.15\u03bb (shape-preserving interpolation through 11 full-wave anchor spacings; >1\u03bb shaded = grating lobes \u2192 ambiguous bearing).",
  "n_trials": 4000,
  "fit_demo_separation_deg": 16.0,
  "fit_power_ratio_db": 5.0,
  "fit_power_ratio_sd_db": 0.33,
  "fit_separation_est_deg": 15.9,
  "fit_separation_sd_deg": 0.38,
  "fit_centre_est_deg": -0.0,
  "fit_centre_sd_deg": 0.32,
  "fit_floor_est_db": -15.2,
  "fit_floor_sd_db": 0.11,
  "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."
}