基于数字阵列雷达CS103 电磁兼容测试需求,针对已高度集成化的数字接收机对外仅经光纤下传AD 采样数字数据的情况,在 GJB 152A-1997 测量方法框架下,对CS103 通用测试布置图中的输出监测器设备进行了创新,提出选用高速、大容量AD 记录存储设备和基于信道化技术构建CS103 项数字接收机性能评估系统相结合的监测方法。经仿真和实际测试表明,该方法也可用于数字接收机的CS104、CS105 测试项,能够评估包括雷达在内的各数字接收机的互调抑制度、无用信号抑制度和交调抑制度等性能指标,适用于工程应用。

The highly integrated digital receiver transmits AD sampled digital data via optical fibre only according to the electromagnetic compatibility test requirements of the digital array radar CS103. Under the framework of the GJB152A-1997 measurement method, the output monitor equipment of general measurement layout in the radar CS103 is innovated in this paper. It′s proposed to use the high-speed and large-capacity AD record storage equipment and to construct a monitoring method of the CS103 digital receiver performance evaluation system based on channelization technology. Simulation and actual tests show that this method can also be used for digital receivers such as CS104 and CS105. It can evaluate performance indicators such as intermodulation rejection, unwanted signal suppression and crossover of digital receivers including radar. Therefore, this measurement method is also suitable for engineering application.

TN957.52