弹载SAR信号处理及其硬件实现

针对空对舰导弹的情况，研究一种将合成孔径雷达技术用于弹戴制导雷达的方案，以提高其横向分辩率，实现对舰船目标的成象。弹载ＳＡＲ采用的一是一种聚束照射成象模式，通过站偿，可以转化为转台成象。

Signal Processing and Its Hardware Implementation of the Missile Borne SAR

Investigates a method which applies synthetic aperture radar (SAR) technique to improve the azimuth resolution of the guiding radar on antiship missile launched by aircraft. Based on this method, imaging of ships can be realized by missile borne guiding radar. Missile borne SAR operates in a sort of spotlight mode. After motion compensation, it can be treated as imaging rotating objects. If small rotating angle is assumed, simple and effective FFT range Doppler algorithm can be used to implement the imaging processing. This paper analyses the typical track of the missile when attacking a ship target and presents the relations between the resolution, imaging area, pulse repetition frequency and the flight parameters of the missile. Then a thorough investigation on motion compensation is made. At last, computer simulation for the proposed method is performed. Also it presents the hardware block diagram which uses DSP devices to implement the SAR signal processing of the missile borne guiding radar.