Measurement of curves for the probability of detection of simulated target signals in a Doppler radar equipped with digital detection system

A measurement of Doppler detection probabilities depending on A/D transformer quantization, showed that the receiver's thermal interference level should not consist of less than one or two quantization levels. A comparison between linear, exponential and binary integrators, showed that the linear system gave the greatest likelihood of detection, followed by the exponential and lastly the binary. In relation to the other two, the exponential threshold was within + or - 1 db. For measurements on the binary integrator at a false alarm rate of 10/4, it was found that the optimal minimum signal excess above the original threshold, was about 40% of the maximum possible in order to give a good probability of detection. The number of pulses dealt with by the integrator then agreed with the number of pulses for over scanning.