According to the problems of the poor resistance to inte rference spike pulse arising from Doppler fuze information processing circuit wh ich was composed of the analog devices

the target signal extreme recognition al gorithm and there were two kinds of target signal algorithm

no interference and interference.In the method

each point was compared with the average of the po ints in the front

and signal amplitude and signal frequency was got.In this wa y

the efficiency was improved.The test results show that the target signal ext reme recognition algorithm can completely remove the spike pulse interference pa rt in the Doppler signal

and the method improves the anti-interference ability of Doppler fuze and it has significant reference in the modern fuze digital tra nsformation and improvement of the anti-interference ability.