高频雷达海洋回波谱的数字模拟

高频雷达海洋回波谱的数字模拟 Numerical Simulation for the Sea Echo Spectrum of HF Radar 文必洋 1 first-author 石振华 1 吴世才 1 武汉大学电子信息学学院,武汉,430072 武汉大学电子信息学学院,武汉,430072 College of Electronic Information,Wuhan University College of Electronic Information,Wuhan University 根据Ｂａｒｒｉｃｋ导出的一阶和二阶高频雷达海洋回波截面方程，以二阶雷达截面方程为基础，在极坐标条件下，把参与散射的二维海浪波数空间分解为无数一维海浪波数空间之和，与之对应，并将二阶海洋回波谱的模拟转化为固定波数下二阶回波子谱的模拟，再将各二阶回波子谱叠加就得到完整的二阶海洋回波谱．这一算法避免了传统的回波谱模拟过程中需求解非线性方程──等频线方程的麻烦．文中给出的模拟结果与其它模拟算法结果相一致，提出的模拟算法简洁，编程简单，模拟结果的精度容易控制．运算速度大大提高． Introduced Barrick’s first-order and second-order sea echo section equations of HF radar. Based on the second-order section equation, this paper submits an algorithm to simulate the sea echoes spectrum of HF radar. In the polar coordinate,the method decomposes the sea wave-number space from two dimensions to one-dimension,and adds up the second-order spectrum from all one-dimension to form the whole second-order spectrum. The simulation algorithm is easy to program and has higher calculating speed. The simulated results are identification to ones with other methods. 高频雷达 海洋回波 数字模拟 HF radar ocean echo numerical simulation 10.14188/j.1671-8836.2000.01.033 P715 国家863计划资助!（863－818－01－02） 2000-01-01 2021-04-01 1