Spaceborne Synthetic Aperture Radar Imaging, Signal Processing Simulation Study

Synthetic aperture radar(SAR) is all-weather, all-time mordern high resolution microwave remote sensing image-producing radar. The most promiment breakthrough in spaceborne remote sensing is radar image-producing, which highly improves the basic functions of radars. With the developement of the electronic battles and electronic antagonism, SAR becomes the major direction of radar technology. SAR based on airplanes are widely applied, and the research of synthetic aperture radars based on satellites is of great success. So far, most of the simulation research in synthetic aperture radars is conducted in airborne area, whereas seldom is done in spaceborne area. As a result, the simulation research in spaceborne aperture radars is the cutting-edge technology in electronic battles and electronic antagonism. This paper offers a brief account of the developement histroy, the technology characteristics and basic principles of Spaceborne SAR in its part. And thus the echo signals and the technics in image-producing algrithoms of Spaceborne SAR are carefully analyzed, and the spot and plane object echo simulation model is esteblished. With this model, several typical digital image-procucing algrithoms and Doppler parameters estimation in echo signals are studied, and the results of the output is carefully analyzed.Here are the major work and results: ⑴The technology characteristics and basic principles of Spaceborne SAR echo signals and its Doppler parameters are carefully analyzed.Simulation model of spaceborne SAR in detecting spot and plane objects are esteblished. ⑵The theoretics calculational method ,typical algrithoms and typical digital image-procucing algrithoms in time-frequency region of Spaceborne SAR echo signals'Doppler parameters are carefully...