plot(SNR,Pd(1,:),'LineWidth',1.2); title('Probability of Detection'); xlabel('SNR (dB)'); grid on hold on plot(SNR,Pd(2,:),'LineWidth',1.2); legend('恒定阈值','CA CFAR'); 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 2...
x, prob100,'k-.'); axis([-10 30 0 1]) xlabel ('SNR - dB') ylabel ('Probability of detection') legend('np = 1','np = 10','np = 50','np = 100') grid 2)仿真 检测概率相对于 SNR,Swerling Ⅱ,Pfa=10−10 上图显示了当 np=1,10,50,100 时,检测概率作为 SNR 函数的曲线,...
ylabel('Probability of detection, P_d'); hold off end %% AUC x ParameterposX=0.1; posY=0.6;figure(2); set(gcf,'Position',[550 100 250 400]) % main screenplot(Parameter,A_GRCR,'k-s','LineWidth',1.5,'MarkerSize',6,'MarkerFaceColor','w'); hold onplot(Parameter,A_GID,'r-o',...
PFA = 1e-6; PD = 0.01:0.01:0.99; N = 24; D = detectability(PD,PFA,N,'Swerling1'); plot(PD,D) xlabel('Probability of Detection'); ylabel('Detectability (dB)'); grid on 另外,给了三个样例:ROC曲线分析检测性能,蒙特卡罗ROC模拟和评估跟踪工作曲线性能,如下: 1.3 天线和接收机增益损失 主...
function pd = pd_swerling3 (nfa, np, snrbar)% This function is used to calculate the probability of detection% for Swerling 2 targets.format longsnrbar = 10.0^(snrbar/10.);eps = 0.00000001;delmax = .00001;delta =10000.;% Calculate the threshold Vtpfa = np * log(2) / nfa;sqrtpfa...
endx = 0:.1:18;set(gca,'ytick',[.1 .2 .3 .4 .5 .6 .7 .75 .8 .85 .9 ...95 .9999])set(gca,'xtick',[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18])loglog(x, pro,'k');endhold offxlabel ('Single pulse SNR - dB')ylabel ('Probability of detection')gr...
Pf = 0.01:0.01:1; % Pf = Probability of False Alarm %% Simulation to plot Probability of Detection (Pd) vs. Probability of False Alarm (Pf) for m = 1:length(Pf) m i = 0; for kk=1:10000 % Number of Monte Carlo Simulations ...
The probability of detection is the probability that a peak in the spectrum is not due to random fluctuations. Data Types: single | double Output Arguments collapse all pxx— Lomb-Scargle periodogram vector | matrix Lomb-Scargle periodogram, returned as a vector or matrix. When the input signal...
In general, the threshold is a function of both the probability of detection and the probability of false alarm. In many phased array systems, because of the cost associated with a false detection, it is desirable to have a detection threshold that not only maximizes the probability of ...
xlabel('a:false alarm Probability'); ylabel('P:Probability of detection'); temp3=['ED N=50 SNR=-5 ']; temp4=['AD m=awgn N=50 SNR=-5 ']; temp5=['AD m=sin N=50 SNR=-5 ']; temp6=['AD m=1 N=50 SNR=-5 ']; legend(temp3,temp4,temp5,temp6); grid; % loglog(a,...