基于MATLAB/Simulink的HY-2星载微波散射计系统仿真建模  

A Simulation Model for HY-2Space-borne Microwave Scatterometer Based on MATLAB/Simulink

作　　者：蒋昱[1] 张庆君[1] 

机构地区：[1]北京空间飞行器总体设计部,北京100094

出　　处：《航天器工程》2013年第4期30-34,共5页Spacecraft Engineering

摘　　要：为实现星载微波散射计的优化设计,利用MATLAB软件搭建了海洋二号(HY-2)卫星微波散射计系统仿真模型。首先,参考其初样设计阶段的仿真模型,根据其最终设计方案和参数设置,对发射机、接收机、信号处理单元三个主要模块搭建仿真模型。其次,模拟海面风场监测过程,将仿真模型划分为信号源、发射机、海面回波、接收机、信号处理单元和结果输出六部分,并在初样设计模型的基础上引入信道特性,完善仿真模型。最后,利用雷达方程解算海面后向散射系数,验证了模型的正确性,可为我国后续微波散射计的设计和优化提供仿真分析手段。In order to optimize the spaceborne microwave scatterometers in China, a MATLAB software is utilized to set up a HY-2 microwave scatterometer simulation model. Firstly, the transmitter, receiver, and signal processing unit are simulated according to the preliminary design simulation model, and the final design plan and parameters. And then, for in-orbit sea surface observation process, the simulation model is divided into six parts, viz. ： signal source, transmit- ter, sea surface echo signal, receiver, signal processing unit, and output. And the channel char- acteristics are taken into consideration in the preliminary state model to update the model. In the end, the radar equation is adopted to calculate the sea surface backscattering coefficient. The model is proved to be correct, and provides a simulation analysis method for the follow-on space- borne microwave scatterometers design and optimization in China.

关 键 词：微波遥感 微波散射计 系统仿真 系统建模 

分 类 号：V443.5[航空宇航科学与技术—飞行器设计]