摘要
海面成像模拟是对海作战导弹弹载合成孔径雷达(SAR)成像制导全过程动态仿真的重要组成部分,对于系统的性能分析和优化设计具有重要意义。研究了弹载情况下SAR对海成像模拟问题,提出了基于三维海面波动模型及弹载SAR工作过程的成像模拟方案。出于逼真性及运算速度的考虑,仿真时动态海面选用基于海浪谱的双尺度模型,海面散射模型选用双尺度散射模型。结合一组典型弹载SAR系统参数,分别在正侧视和斜视模式下对三种典型海况的动态海面进行了成像模拟,并利用实际海面SAR图像的统计特性验证了模拟结果的有效性。
The imaging simulation of dynamic sea surface with synthetic aperture radar（SAR）is an important part of the whole terminal phase guidance simulation with the missile-borne SAR,and has great significance for performance analysis and optimization design to the system.The imaging simulation of dynamic sea surface with missile-borne SAR is studied,and the imaging simulation scheme based on sea wave model and the working progress of SAR is proposed.The sea surface is simulated by a two-scale model based on wave spectrum and the two-scale scattering model is selected as sea surface scattering model for authenticity of simulation and speed of operation.The imaging simulations of dynamic sea surface are made in different sea states using SAR strip-map and squint mode according to a typical set of missile-borne SAR parameters,and the effectiveness of the simulation results are justified by statistical properties of the real SAR image.
出处
《电波科学学报》
EI
CSCD
北大核心
2012年第3期592-597,635,共6页
Chinese Journal of Radio Science
基金
"泰山学者"建设工程专项经费资助
