基于网格计算的SAR回波分布式仿真

SAR Echo Distributed Simulation Based on Grid Computing

为了解决SAR分布目标回波仿真中的计算瓶颈,首次把网格计算思想引入其中。利用FTP、TCP/IP协议构建网络通信引擎服务,利用静态和动态调度算法构建网格资源调度模块,利用面向对象技术、多线程技术等构建了网格资源监测模块,网格资源管理模块、回波计算模块、仿真控制模块等,实现了SAR回波仿真网格,通过多个计算节点的协同工作来完成仿真任务。试验表明,该网格平台具有高计算效率、易搭建、易访问、价格低廉、突破地理限制等优点。

To enhance the computational efficiency of SAR （Synthetic Aperture Radar） echo data simulation for distributed targets, the grid computing technologies were firstly introduced into the domain. The FTP （File Transfer Protocol）, TCP/IP（Transfer Control Protocol/Internet Protocol） were used to construct the service of network communication engine, the static and dynamic task scheduling algorithms were used to construct the grid resource scheduling module, the OOP（object oriented programming） , multithreading and other technologies were selected to construct the grid resource surveillance module, grid resource management module, echo calculation module, simulation control module and so on. The SAR echo simulation grid was realized by all the above modules, and the simulation task could be done by many grids’ cooperative work. Experiment results show that the grid has the characteristics of high computational efficiency, easy construction, easy accessing, low-cost and unrestricted geographical position.