Abstract: Objectives In order to accurately evaluate the impact of blanking on intercepting the pulses from targets, the loss probabilities of the pulse caused by the blanking were studied. Methods The influence of the blanking on pulse sorting had been analyzed. According to the pulse sorting method used by reconnaissance equipment, the criteria for identifying the loss pulse had been determined. The output waveform of the pulse after being erased by the blanking gate being analyzed in the condition of various time-sequences between the pulse and the blanking gate, the varying law of the residual pulse was obtained. The expressions were derived for the average loss probabilities of the pulses and the loss probabilities of the periodic pulses both caused by the periodic blanking gates, as well as the average loss probabilities of the pulses caused by blanking gates with time-varying duty cycles. Finally, each loss probability of the pulses was compared with a combination of the calculation results and numerical simulation. The maximum absolute deviation between the two was about 5.8E-4, which could be ignored. Results The mathematical models for the loss probabilities and the average loss probabilities of the pulses are obtained and their accuracy has been verified. ConclusionsThe research has achieved a quantitative evaluation of the influence of the blanking on the loss of the intercepted pulse. It provides the input for accurately analyzing the missed alarm probability of in intercepting pulses with the blanking gate and the support for making decision on the use of blanking measures.