beamform op• 資料種類:beatcube → table
• 呼叫: import fullseye as fs; fs.ledger.beamform_doa(cube, wavelength_m=0.0038934, element_spacing_m=None, angles_deg=None, range_bin=None, doppler_bin=None, n_targets=1, min_fraction=0.1, range_bin_m=None, velocity_bin_ms=None)(要直接呼叫實作,import rangedoppler; rangedoppler.beamform_doa(cube, wavelength_m=0.0038934, element_spacing_m=None, angles_deg=None, range_bin=None, doppler_bin=None, n_targets=1, min_fraction=0.1, range_bin_m=None, velocity_bin_ms=None);從台帳取用則 opsrangedoppler.get("beamform_doa"))
單個距離-都卜勒單元的到達方向 [deg]。
> 以下的詳細說明為原文 —— 摘要與標題已翻譯。
beamform_delay_sum followed by strict local-maximum picking on the angle spectrum: the peaks are sorted by power, filtered at *min_fraction* of the strongest, and the top *n_targets* returned. Two targets closer than the array's beamwidth (~0.886*lambda/(N_a*d), reported here as angular_resolution_deg) merge into one lobe — delay-and-sum cannot separate them, and this reports one peak rather than pretending otherwise.
When *range_bin_m* / *velocity_bin_ms* are supplied (from fmcw_design) the cell's range and velocity are converted too, giving the complete (range, velocity, angle) detection this family exists to produce; without them those two fields are None rather than a number in unknown units.
Returns a dict: angles_deg and powers (lists, strongest first), n_found, grid_deg and spectrum (the full sweep), range_bin / doppler_bin (the cell used), range_m / velocity_ms, angular_resolution_deg and max_unambiguous_angle_deg.
Raises ValueError: everything beamform_delay_sum raises, plus *n_targets* < 1 or a *min_fraction* outside [0, 1].
• 範例資料目錄(下載 URL / 授權) —— 2-D 用 skimage.data(BSD/公有領域)加合成圖,3-D 給出真實資料源(Stanford/PDS 等)的下載 URL。
• 運算子來歷與參考文獻 —— 該運算子族所依據的研究/方法出處。
• 演算法的正典(作者、年份)與用途見上面的族使用指南。
• fmcw_range_doppler — py -3.11 examples/fmcw_range_doppler.py
• poc_multibeam_bathymetry — py -3.11 examples/poc_multibeam_bathymetry.py
table 作為輸入)—
beamform)*Provenance: rangedoppler.py — RANGEDOPPLER 運算子登記表。本條目由 tools/opdocs.py md 自動產生(請勿手動編輯)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.