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RDM dBm/bin 단위 PSD 도시 기능 추가

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KG-access
2026-03-04 22:05:26 +09:00
parent 9595d68526
commit a70aa68053
2 changed files with 58 additions and 8 deletions
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04. Signal Processing/visualize_rd_map_with_spurs.m
+24 -3
View File
@@ -13,13 +13,34 @@ function fig = visualize_rd_map_with_spurs(target_rd_map, r_axis, v_axis, Target
% 출력:
% - fig: 생성된 figure 핸들
if ~isfield(RadarParams, 'SP') || ~isfield(RadarParams.SP, 'RDM') || ...
~isfield(RadarParams.SP.RDM, 'window_range') || ~isfield(RadarParams.SP.RDM, 'window_doppler')
error('RadarParams.SP.RDM.window_range / window_doppler 정보가 필요합니다.');
end
win_r = RadarParams.SP.RDM.window_range;
win_d = RadarParams.SP.RDM.window_doppler;
normal_factor = RadarParams.Rxpath.fc_lpf * RadarParams.Waveform.PRF * sum(win_r.^2) * sum(win_d.^2);
if ~isfield(RadarParams, 'Rxpath') || ~isfield(RadarParams.Rxpath, 'load_impedance_ohm')
error('RadarParams.Rxpath.load_impedance_ohm 값이 필요합니다.');
end
load_impedance_ohm = RadarParams.Rxpath.load_impedance_ohm;
psd2d_w_hz2 = (abs(target_rd_map).^2) / (load_impedance_ohm * max(normal_factor, eps));
rbw_range_hz = RadarParams.Waveform.fs_adc * sum(win_r.^2) / max(eps, (sum(win_r)^2));
rbw_doppler_hz = RadarParams.Waveform.PRF * sum(win_d.^2) / max(eps, (sum(win_d)^2));
rd_map_dbm_bin = 10*log10(max(psd2d_w_hz2, realmin) / 1e-3) + 10*log10(max(rbw_range_hz * rbw_doppler_hz, eps));
fig = figure('Name', '2D Range-Doppler Map');
imagesc(r_axis, v_axis, 20*log10(abs(target_rd_map)));
imagesc(r_axis, v_axis, rd_map_dbm_bin);
axis xy; % y축 방향(속도)을 위로 정렬
colorbar;
cb = colorbar;
cb.Label.String = 'Power (dBm/bin)';
xlabel('Range (m)');
ylabel('Velocity (m/s)');
title('Range-Doppler Map (Single Channel)');
title('Range-Doppler Map (dBm/bin)');
colormap(jet);
% 범례용 핸들 및 레이블 수집
Main.m
+34 -5
View File
@@ -70,11 +70,11 @@ RadarParams.Antenna.TxPattern = build_antenna_patterns(RadarParams.Antenna.NumTx
RadarParams.Antenna.RxPattern = build_antenna_patterns(RadarParams.Antenna.NumRx, '2D', 14, 2, 40, 15, RadarParams.Antenna.rx_files);
% 5) 타겟 모델링
RadarParams.Target.R = [12, 80, 120]; % 타겟 거리 (m)
RadarParams.Target.v = [7, -5, 0]; % 타겟 속도 (m/s)
RadarParams.Target.rcs = [10, 5, 20]; % 타겟 RCS (dBsm)
RadarParams.Target.az = [10, -10, 0]; % 방위각 (deg)
RadarParams.Target.el = [0, 0, 5]; % 고각 (deg)
RadarParams.Target.R = [12]; % 타겟 거리 (m)
RadarParams.Target.v = [7]; % 타겟 속도 (m/s)
RadarParams.Target.rcs = [-10000]; % 타겟 RCS (dBsm)
RadarParams.Target.az = [10]; % 방위각 (deg)
RadarParams.Target.el = [0]; % 고각 (deg)
RadarParams.Target.NumTargets = length(RadarParams.Target.R);
% 6) 수신단 파라미터
@@ -83,6 +83,7 @@ RadarParams.Rxpath.fc_lpf = 0.8*RadarParams.Waveform.fs_adc/2; % L
RadarParams.Rxpath.adc_bits = 12; % ADC 비트수
RadarParams.Rxpath.adc_v_full_scale = 2.0; % full-scale 전압 (Vp-p)
RadarParams.Rxpath.receiver_mode = 'Real'; % 'IQ' 또는 'Real'
RadarParams.Rxpath.load_impedance_ohm = 50; % 임피던스 (Ohm)
RadarParams.Rxpath.rxPathGain_dB = 50; % RX 경로 이득 (dB)
RadarParams.Rxpath.system_NF_dB = 15; % 시스템 잡음지수 (dB)
@@ -103,6 +104,34 @@ RadarParams.SpurParams.enabled = false; % spur on/of
% 7) 신호처리 파라미터
RadarParams.SP.RDM.window_type_range = 'hann'; % Range FFT용 윈도우
RadarParams.SP.RDM.window_type_doppler = 'chebwin'; % Doppler FFT용 윈도우
num_samples_range = round(RadarParams.Waveform.fs_adc * RadarParams.Waveform.Timing.AdcSampTime);
num_chirps_doppler = RadarParams.Waveform.NumChirps;
if strcmpi(RadarParams.SP.RDM.window_type_range, 'none')
RadarParams.SP.RDM.window_range = ones(1, num_samples_range);
elseif strcmpi(RadarParams.SP.RDM.window_type_range, 'hamming')
RadarParams.SP.RDM.window_range = hamming(num_samples_range)';
elseif strcmpi(RadarParams.SP.RDM.window_type_range, 'blackman')
RadarParams.SP.RDM.window_range = blackman(num_samples_range)';
elseif strcmpi(RadarParams.SP.RDM.window_type_range, 'chebwin')
RadarParams.SP.RDM.window_range = chebwin(num_samples_range, 60)';
else
RadarParams.SP.RDM.window_range = hann(num_samples_range)';
end
if strcmpi(RadarParams.SP.RDM.window_type_doppler, 'none')
RadarParams.SP.RDM.window_doppler = ones(1, num_chirps_doppler);
elseif strcmpi(RadarParams.SP.RDM.window_type_doppler, 'hamming')
RadarParams.SP.RDM.window_doppler = hamming(num_chirps_doppler)';
elseif strcmpi(RadarParams.SP.RDM.window_type_doppler, 'blackman')
RadarParams.SP.RDM.window_doppler = blackman(num_chirps_doppler)';
elseif strcmpi(RadarParams.SP.RDM.window_type_doppler, 'hann')
RadarParams.SP.RDM.window_doppler = hann(num_chirps_doppler)';
else
RadarParams.SP.RDM.window_doppler = chebwin(num_chirps_doppler, 60)';
end
RadarParams.SP.CFAR.method = 'OS'; % 'CA' 또는 'OS'
RadarParams.SP.CFAR.dimension = '2D'; % '1D' 또는 '2D'
RadarParams.SP.CFAR.axis = 'doppler'; % 1D일 때만 사용: 'range' 또는 'doppler'