雷达实时目标模拟技术研究

发布时间：2018-11-27 15:44

【摘要】：随着微电子技术、现代数字信号处理技术和计算机技术的高速发展,雷达目标模拟技术也得到迅速发展,在雷达系统研制过程中发挥越来越重要的作用。在现代雷达系统中通常采用复杂电子系统,为了有效的提高雷达系统的性能,进行实时逼真的目标模拟技术研究,进行调整、验证雷达系统参数十分必要,很多国家为此投入大量的人力和财力。本文针对上述问题及公司项目的需求,以雷达实时动态目标模拟技术为主要研究对象,在深入分析雷达工作原理和目标模拟技术的基础上,进行雷达实时目标模拟器开发,为雷达系统调试提供测试信号。主要内容为:1.根据项目要求进行目标模拟器硬件及软件方案设计。根据项目系统需求和当前的硬件技术水平,对比当前目标模拟器的实现方法,确定模拟器主要的硬件架构和各个功能模块实现的功能与实现方法;根据选取的硬件架构和软件功能进行软件模块划分。2.根据模拟器方案,进行硬件、软件设计。运用Protel软件对DSP+FPGA+DDS硬件架构电路进行原理图及印制板设计;根据软件功能模块的划分进行软件模块详细设计。3.研究系统同步技术。系统同步工作分为模拟器通道之间的同步以及模拟器与雷达之间的同步。它们都需要模拟器在雷达同步时序、控制命令的控制下,各个通道都严格按照固定节拍与雷达同步协调工作。4.研究实时目标模拟技术。本文根据雷达系统工作原理,提出了一种新颖的实时目标模拟方法。在每一个工作周期,利用DSP芯片实时高速的运算能力,对当前周期内多个目标与雷达扫描波束进行实时交汇比较,计算目标的特征参数,产生所需的中频回波信号。本文研制的实时动态目标模拟器经过大量系统调试和试验验证,各项指标都满足了系统设计的要求。能在雷达时序控制下,完成对空中多个目标的搜索、确认、跟踪进行全过程模拟,具有一定的经济价值和社会效益。
[Abstract]:With the rapid development of microelectronic technology, modern digital signal processing technology and computer technology, radar target simulation technology has been developed rapidly, which plays an increasingly important role in the development of radar system. Complex electronic system is usually used in modern radar system. In order to improve the performance of radar system effectively, it is necessary to study the real-time and realistic target simulation technology, adjust and verify the parameters of radar system. Many countries have invested a lot of human and financial resources. In view of the above problems and the demand of the company project, this paper takes the radar real-time dynamic target simulation technology as the main research object, on the basis of deeply analyzing the radar working principle and the target simulation technology, carries on the radar real-time target simulator development. Provides the test signal for the radar system debugging. The main contents are as follows: 1. Design the hardware and software of the target simulator according to the project requirements. According to the requirements of the project system and the current level of hardware technology, this paper compares the implementation methods of the current target simulator, and determines the main hardware architecture of the simulator and the functions and implementation methods of each functional module. According to the selected hardware architecture and software function software module division. 2. According to the simulator scheme, hardware and software design. The schematic diagram and PCB design of DSP FPGA DDS hardware architecture circuit are carried out by using Protel software, and the software module is designed in detail according to the partition of software function module. 3. Research on system synchronization technology. The system synchronization is divided into the synchronization between the simulator channel and the synchronization between the simulator and radar. They all need simulator in the radar synchronization sequence, control command control, each channel is strictly in accordance with the fixed rhythm and radar synchronization coordination. 4. The real-time target simulation technology is studied. According to the principle of radar system, a novel real-time target simulation method is presented in this paper. In each working cycle, using the real-time and high-speed computing power of DSP chip, the real-time intersection of multiple targets and radar scanning beams in the current cycle is carried out, the characteristic parameters of the target are calculated, and the needed if echo signal is generated. The real-time dynamic target simulator developed in this paper has met the requirements of system design through a large number of system debugging and experimental verification. Under the control of radar time series, it can search, confirm and track multiple targets in the air. It has certain economic value and social benefit.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN955

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