转发式雷达目标模拟器设计与实现

发布时间：2018-09-07 16:02

【摘要】：在雷达研制过程中使用目标模拟器用于雷达调试可以降低实验成本,提高研制效率。本文讨论的转发式雷达目标模拟器主要用于MIMO新体制雷达测量系统的炮弹目标回波模拟,为MIMO雷达的功能测试提供了极大便利。传统的雷达性能测试需要在野外真实环境下进行,这给雷达的测试开发造成了很大困难,首先使用真实炮弹价值昂贵,还需要专门人员操作,存在一定危险,其次实验器材运输需要耗费大量人力。而本文研究的雷达模拟器很好的解决了这个问题。转发式雷达目标模拟器系统采用自上而下的设计原则,模块化的设计方法,重点在于雷达发射信号采集、目标信息载入、模拟回波输出,模拟器样机功能完善且操作简便。转发式雷达目标模拟器的设计实现主要分为以下几个阶段:第一阶段分析了MIMO雷达需要探测的目标回波模型,确立了任务需求和性能指标;第二阶段设计了信号处理方案,并使用MATLAB软件仿真验证该方案的可行性;第三阶段给出了模拟器硬件平台,对模块划分、芯片选型、原理图等方面进行了说明;第四阶段编代码实现功能模块,包括FPGA信号处理部分的硬件描述语言实现以及PowerPC嵌入式C语言编写与协议制定;最后阶段利用PC控制界面,结合软件功能与硬件平台进行系统调试,验证了转发式雷达目标模拟器的各项指标达到要求。
[Abstract]:The application of target simulator in radar debugging can reduce the experimental cost and improve the development efficiency. The forward radar target simulator discussed in this paper is mainly used in the projectile target echo simulation of the new MIMO radar measurement system, which provides a great convenience for the function test of the MIMO radar. The traditional radar performance test needs to be carried out in the field, which makes it very difficult to test and develop the radar. First of all, it is expensive to use real artillery shells, but also needs special personnel to operate, which is dangerous. Second, experimental equipment transportation needs a lot of manpower. The radar simulator studied in this paper solves this problem well. The forward radar target simulator system adopts the top-down design principle and the modular design method. The emphasis is on radar signal acquisition, target information loading, analog echo output. The simulator prototype has perfect function and simple operation. The design and implementation of the forward radar target simulator are divided into the following stages: in the first stage, the target echo model needed to be detected by MIMO radar is analyzed, and the task requirements and performance indexes are established; in the second stage, the signal processing scheme is designed. The feasibility of the scheme is verified by MATLAB software simulation. In the third stage, the simulator hardware platform is given, the module partition, chip selection, schematic diagram and so on are explained. It includes the realization of hardware description language of FPGA signal processing part and the programming and protocol establishment of PowerPC embedded C language. In the last stage, the system is debugged by using PC control interface, combined with software function and hardware platform. It is verified that the targets of the forward radar target simulator meet the requirements.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN955

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