🍁🥬🕒摘要🕒🥬🍁
AOA 定位方法，主要是测量信号移动台和基站之间的到达角度，以基站为起点形成的射线必经过移动台，两条射线的交点即为移动台的位置。该方法只需两个基站就可以确定 MS 的估计位置，其定位示意图如图所示。
✨🔎⚡运行结果⚡🔎✨
💂♨️👨🎓Matlab代码👨🎓♨️💂
%% Initialization clear; addpath(genpath('../Library/')); params = getParams(); micUsed = params.micUsed; fileName = '../data/ReSpeaker/example'; waveOrig = load([fileName '.mat']).wave(micUsed, :); [~, waveLen] = size(waveOrig); sampleRate = params.sampleRate; readRate = params.readRate; readNum = round(waveLen / sampleRate * readRate); readSampleNum = params.readSampleNum; sourceNum = params.sourceNum; %% AoA Extraction angleListY = zeros(readNum, sourceNum); angleListZ = zeros(readNum, sourceNum); for readIdx = 1: readNum waveNow = waveOrig(:, ... (readIdx - 1) * sampleRate / readRate + 1: (readIdx - 1) * sampleRate / readRate + readSampleNum); [angleNowY, angleNowZ] = multipleSource(waveNow, sourceNum, params); angleListY(readIdx, :) = angleNowY; angleListZ(readIdx, :) = angleNowZ; end save([fileName '_result.mat'], 'angleListY', 'angleListZ'); %% Visualization angleListGtY = ones(readNum, 1) * [25 61]; angleListGtZ = ones(readNum, 1) * [291 101]; figure(1); subplot(1, 2, 1); plot((1: readNum) / readRate, angleListY, 'x', ... (1: readNum) / readRate, angleListGtY, 'linewidth', 2); axis([0 readNum / readRate params.angleRangeY(1) params.angleRangeY(2)]); legend('Est_1', 'Est_2', 'Gt_1', 'Gt_2'); title('Angle Y'); xlabel('Time (s)'); ylabel('AoA (Deg)'); subplot(1, 2, 2); plot((1: readNum) / readRate, angleListZ, 'x', ... (1: readNum) / readRate, angleListGtZ, 'linewidth', 2); axis([0 readNum / readRate params.angleRangeZ(1) params.angleRangeZ(2)]); legend('Est_1', 'Est_2', 'Gt_1', 'Gt_2'); title('Angle Z'); xlabel('Time (s)'); ylabel('AoA (Deg)');
📜📢🌈参考文献🌈📢📜
[1]石月,戴雅伟.一种基于4G AoA的5G天线方位角调优方法[J].电信工程技术与标准化,2022,35(07):48-51.DOI:10.13992/j.cnki.tetas.2022.07.016.
