基于电路仿真的接收机中频放大器的GFRF模型

雷达引信是远程精确打击武器的重要组成部分,它的性能好坏直接关系着武器整体性能的发挥,因此,雷达引信的性能测试是武器系统运用过程中的重要环节。如何快速准确地判断雷达引信的性能是目前所关注的重要课题之一。接收机是雷达引信重要组成部分,对接收机的测试是引信测试的关键步骤。本文基于雷达引信接收机的各项技术指标和实际电路结构,利用EDA仿真软件Multisim2001建立了引信接收机的中频放大器、检波器的仿真模型,对实际引信测试过程中不可测的信号进行了仿真测试,在此基础上,利用非线性系统理论和方法建立了中频放大器和检波器的广义频率响应(GFRF)简化辨识模型,该辨识模型为雷达引信的快速测试提供了一个标准模板,它是构造雷达引信自动化测试系统的基础工作之一。

The GFRF Identification Model of Radar Fuze Receiver

The radar fuze is an important part in weapons of long-distance precision attack. Its performance is tightly associated with the entire performance of whole weapon system. Hence, the testing of radar fuze is a signified procedure in the exercising process of weapon system. How to estimate the performance of radar fuze efficiently and accurately is one of the important problems that we concern about. In this paper, a simplified GFRF identification model of IF amplifier and detector of radar fuze receiver, which is based on EDA simulation software Multisim2001, is presented. This model supplies a standard template for the quick testing of radar fuze, and is one of the fundamental researches for constructing the automatic testing system of radar fuze.