Abstract: This paper begins with a study on the characteristics of the HPRF,MPRF and LPRF in the waveform design of airborne PD radar. Then a new adaptive waveform design scheme is presented. As a result an optimal waveform can be selected and the performance of fire control radar can be improved. Method for maneuvering target tracking in MPRF mode is analyzed emphatically. By use of this scheme, effective target detection is achieved in trial flight.