ROC curve — P
d
vs P
fa
Decision statistic: noise vs signal+noise
noise only
signal + noise
threshold
Detector
Single-pulse SNR
13.0 dB
Threshold
4.00
Pulses N
Coherent integration (+10·log N)
Effective SNR
13.0 dB
N = 1, no gain
Threshold
4.00
P
d
—
P
fa
—