摘要
某雷达是导弹的重要组成部分,它的性能直接决定了导弹命中的精度,在雷达的设计、研制和调试过程中,迫切地需要先进的测试设备对其各项性能、指标进行监测,以此保障雷达研制质量。本文的基于ARM9的测试设备体现了现在测试设备的发展方向,实现了对雷达的测试,满足现代雷达的测试需求。
雷达测试设备包括嵌入式系统测控台和工控机。嵌入式系统测控台用于给雷达设备供电,实时采集、测量、存储和显示雷达的数据,使用触摸液晶屏实现人机交互。工控机上插有一些PCI总线的通讯卡,实现了1553B、RS232、RS485和RS422几种通信协议,完成与雷达、GPS设备、信号处理机以及目标模拟器之间的通讯,并实现目标支架电机的控制。
测控台在硬件设计中采用A/D芯片级联的方式,完成了低速多通道的数据采集;采用CF卡完成了大容量的数据存储;采用USB接口完成测控台数据上传到工控机;嵌入式系统测控台选用Linux操作系统,其具有源代码开放,可靠性强,且易于移植等优点,广泛应用在嵌入式系统中。在工控机上使用BU61580协议芯片,实现了1553B的通信协议,使用LabWindows/CVI虚拟仪器软件平台,完成PCI总线通讯卡的上位机软件的设计。
基于ARM9的雷达地面测试设备已经成功应用于雷达总体的联调,实现了雷达工作过程中性能指标的监测,保障了雷达的研制质量,是雷达生产、调试和使用中不可或缺的测试设备。
The performance of a radar for terminal guidance, will determine the accuracy of the missile hit. So in the process of design development and debugging for radar. there is an urgent need for testing and Monitoring its performance using advanced test equipments, in order to ensure the quality of radar. Based on ARM9 technology, this thesis designed the test equipment for testing the radar.This test equipment reflects the advanced developing direction of test equipment and meets the testing requirements of modern radar.
Radar test equipment designed by this thesis, mainly consists of radar test set and control platform.Radar test set,which is made up of embedded system based on ARM9,is used to sample real-time test data, to save the result, to display test data,to test the signal of voltage and current ,and control the function of Touch Screen.The control platform consists of several cards based on PCI Bus Interface,which realized several types of 1553B, RS232, RS485 and RS422 communication protocols. Using these cards, The control platform could communicate with radar, GPS devices, signal processor and objective simulator, in addition to control the the motor of target standand.
Within the firmware design of radar test set, it uses a series of key technology, such as the technology of low speed signal sample, mass storage of CF card and USB interface technology,which combination of the actual project requirements. The embedded system used Linux operating system.It has been widely used in embedded systems for advantages of open source code, reliability, and easy to transplant. Finally, this thesis designed the application program interfaces of all communication cards with the LabWindows/CVI software.
The test equipment based on ARM9, had been delivered for unit test and outfield experiment. The field test shows that it completed the test of radar performance, ensured the quality of radar research.Thus it is a indispensable equipment for radar in the process of debugging and research.
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