摘要
本文对星载ＳＡＲ图象仿真方法进行了深入地研究，基于分形理论、小面单元模型和陆地杂波散射特性模型提出了一种仿真自然地面场景星载ＳＡＲ图象的实现方法．根据实地勘测的ＤＥＭ数据进行计算机仿真，实验结果表明：利用本文方法仿真的星载ＳＡＲ图象逼真地反映了自然地面场景的随机起伏特性和雷达图象特有的几何畸变现象，能够对星载ＳＡＲ系统方案设计进行验证，对实现ＳＡＲ卫星总体方案的优化设计具有重要意义．
Spaceborne synthetic aperture radar (SAR) image simulation methods are investigated. A new method is proposed based on fractal theory, facet model and clutter scattering characteristic model. Digital elevation model of a natural terrain is used in computer simulation. The simulation results demonstrate that the stochastic properties and special geometric distortion phenomena of natural ground scene are reflected in the simulated spaceborne SAR images. The simulation method is suitable for verification of SAR satellite system scenario, and it has significant importance to realize the optimization of system scenario of SAR satellite.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2001年第9期1202-1205,共4页
Acta Electronica Sinica
基金
国家863计划308主题基金
关键词
自然地面场景仿真
星载合成孔径雷达
分形
小面单元模型
雷达散射模型
Computer simulation
Electromagnetic wave scattering
Fractals
Image processing
Mathematical models
Radar clutter
Satellites
Signal distortion
