Research on the Echo Character of Missile-borne PD Radar under a Condition of Spin

In order to simulate the echo signals of missile-borne radar under the condition of spin accurately,the paper sets up spin model during warheads re-entry,and obtains the mathematical expressions of time-delay and Doppler frequency for spot-beam. After the simulation,the validity of the model and formula is been proved. The conclusion of the paper sets the strong foundation for the accurate simulation of wide-beam radar echo in the future and has an important reference significance.