Target detection performance of PDI considering the change of the target distance

In radar systems, PDI (post-detection integration) techniques are widely used to improve the target detection performance. In a conventional PDI, targets are assumed to be stationary, that is the distance between a radar platform and a target is almost constant. Conversely, if the target distance changes, the target detection performance of PDI deteriorates. To resolve the above problem, we have proposed shift PDI method. In this method, we conduct the PDI processing, based on the various assumptions of target velocity, which results in the increase of PFA (probability of false alarm rate). In this paper, we conduct the numerical formula to calculate the PFA for shift PDI procedure. Moreover, we estimate the target detection probability of the shift PDI with considering the increase of PFA in the shift PDI procedure.