论文部分内容阅读
对于雷达高度计的设计与评估 ,大地回波计算致关重要 .给出了某型雷达高度计的天线照射模型、天线脉冲亮区模型的解析推导 ,并建设性地分析了多普勒效应模型以及大地散射因子模型 .随后研究了雷达高度计的散射功率、散射多普勒谱和散射信号等参数的相应计算算法 .给出大地雷达回波的算例 ,检验了算法的正确性和有效性 .所给模型和算法合理、计算精度令人满意且计算所需时间少
For the design and evaluation of radar altimeter, the calculation of earth echo is very important.An aerial radiation model of a certain type of radar altimeter and an analytic derivation of the bright area model of antenna pulse are given, and the Doppler effect model and the earth Scattering factor model.And then, the corresponding algorithms for calculating the parameters such as scattering power, scattering Doppler spectrum and scattering signal of radar altimeter are studied.An example of radar echo is given and the correctness and validity of the algorithm are verified. The model and algorithm are reasonable, the calculation accuracy is satisfactory and the calculation time is less