基于Simulink的单比特数字接收机设计

瞬时测频接收机拥有大工作带宽以及高截获概率,是电子战系统的一个重要组成部分,然而它无法对同时到达的多个信号进行测频。单比特接收机是解决这个问题的一种方法,由于它采用了很低的ADC采样位数,以及直接射频采样能力和独特的测频算法,使它具有大带宽、实时测量双音信号频率信息的优异性能。相比于典型的数字接收机,自身结构也得到了极大的简化。提出了一种单比特接收机硬件设计架构,并基于Simulink工具搭建了模型,分析了这种设计的性能。该模型具有高度的灵活性,对于单比特接收机的设计与系统实现具有一定的指导意义。

Design of monobit digital receiver based on Simulink

The instantaneous frequency measurement receiver is an important part of the electronic warfare(EW) system,which has the characteristics of broad operation band and high intercept probability.It is used to sense frequency in real time.However,it is impossible for the receiver to process several simultaneous signals in the battle field.The problem can be solved by the monobit receiver with the advantage of measuring the frequency of dual-tone signal in real time,which has a 1-bit analog to digital converter and the capability of direct radio frequency(RF) sampling and special digital processing.In the paper,a hardware design of a monobit receiver is proposed and a simulation model is constructed to analyze the performance of the monobit receiver based on Simulink platform.The model has high flexibility and has great significance for the design and implementation of the monobit receiver.