基于LXI总线的制导站分布式测试系统设计

摘要

制导站系统存在大量的电磁波辐射信号.在保证测试人员、设备安全的条件下,为实现制导站的测试需求,设计并实现了一种基于LXI总线的分布式测试系统;该测试系统以信号截获理论为基础,通过对制导站系统发射信号的截获、分析,根据信号截获相关理论计算分析出制导站系统发射功宰、脉冲包络波形、载波频率,发射频谱、天线方向图等性能特性;给出了测试系统的分布式组成结构和测试仪器的相关性能参数,对测试系统仪器LAN端口进行了配置;并采用LabWindows/CVI对测试系统软件进行开发.最后,以制导站系统发射功率测试为例,对该参数进行准确测试,验证了该测试系统的准确性、实用性和有效性.%There are a lot of electromagnetic radiation signals in the guidance station system. In order to realize the test demands of the guidance station, a distributed testing system based on LXI bus was designed and implemented under the condition that guarantee the safe of testers and equipments. The test system works on the basic of signal intercepts and captures theory. The guidance station's performance characteristics such as system transmit power, pulse envelop waveform, signal carrier frequency, transmit frequency spectrum and antenna pattern etc. can be achieved through the captures and analysis of the guidance transmit signals. The structure of distributed testing system and the relevant performance parameters of testing instrument were provided in this paper. The LAN ports of instruments on the test system was configured. And the test system software was developed by LabWindowa / CVI. At last, the test of transmitted power parameter in guidance station is taken as an example, the system tests this parameter accurately. The veracity, effectiveness and rationality of this test system has been proved.