Moxon monopulse pair (free space)

Σ 5.1 dBi · Σ F/B only 4.4 dB — the single Moxon's 30 dB null collapses under array mutual coupling (PML-confirmed) · Δ null −30 dB · +3.0 dB array · ±32° Δ lobes · 240 mm (0.73λ) · ideal coupler

⬗ stack-up: free-space sheet metal/wire (no substrate)

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Statistical resolution limit (SRL) — closest two targets tellable apart vs SNR · hover a point (session 014z DF model)

051015510152025−5 dB bg · harsh−15 dB bg · nominalSNR 5 dB (bg −5 dB) → SRL 13.6° (≈ 23.9 m apart @ 100 m)13.6°SNR 10 dB (bg −10 dB) → SRL 8.9° (≈ 15.5 m apart @ 100 m)SNR 15 dB (bg −15 dB) → SRL 5.3° (≈ 9.3 m apart @ 100 m)5.3°SNR 20 dB (bg −20 dB) → SRL 4.0° (≈ 7.0 m apart @ 100 m)SNR 25 dB (bg −25 dB) → SRL 1.0° (≈ 1.7 m apart @ 100 m)SNR = signal − background (dB) · background = −SNRSRL — resolvable separation (°)Statistical resolution limit — two unresolved targets (Σ HPBW 40°, 0.73λ)Moxon element (full-wave) × array factor · GLRT 1-vs-2 · CFAR 5% · 5 dB interferer · 014z model
moxon_monopulse.json