Page 512 - Fundamentals of Radar Signal Processing

FIGURE 6.23 Approximate effect of interfering target on cell-averaging CFAR.
–3
Threshold set for P = 10 : (a) reduction in P , (b) equivalent masking loss.
D
FA

Another way to characterize the effect of an interfering target is by the
increase in SNR required to maintain the original value of . Let be the value

of SNR required to attain the original using the elevated threshold .
Equation (6.137) expressed in terms of the original value of and threshold