摘要
SAR原始回波模拟在系统设计及成像算法验证等方面具有重要的理论及工程实践意义。文中在分析并建立合成孔径雷达回波信号数学模型的基础上,研究一种基于真实场景的SAR回波模拟方法。该方法利用SAR真实场景图像的灰度信息近似求得场景后向散射系数,根据雷达脉冲工作流程生成回波数据,具有实现简单、计算量小、回波模拟结果精确等优点。通过点目标、面目标和真实场景回波的仿真实验,从回波数据的统计特性以及图像级角度验证了其可行性。
The SAR raw signal simulation plays an important role in the SAR system design and imaging algorithm validation.This paper analyses the SAR raw signal model,and brings forward a simulation method of the raw signal for the real scene.The scene backscatters are obtained by the gray value of the SAR image.Then the raw signal is simulated based on the radar pulse operation.Detailed analysis and comparisons are also presented.The results show that the method is simple and effective.
出处
《遥测遥控》
2007年第3期36-41,共6页
Journal of Telemetry,Tracking and Command
