短波宽带大动态侦察接收机的设计

Design on HF Wideband Reconnaissance Receiver with Large Dynamic Range

短波信号传输信道的多径效应和衰落特性决定了短波侦察接收机设计具有较强的挑战性,尤其对宽频带、大动态短波侦察接收机的设计提出了更高的要求。论文在介绍基于软件无线电思想和数字信号处理技术的宽带大动态短波接收机设计的基础上,重点研究、分析了三阶互调对接收机性能的影响,并给出了具体的设计方法和原理样机的技术指标。

The characteristics of multi-path effect and fading of HF signal transmission channel makes the design of HF reconnaissance receiver face the challenge, especially the higher requirements are offered for HF wideband reconnaissance receiver with large dynamic range. This paper introduces a wideband receiver which is based on the software radio technology and digital signal processing technology, and mainly studies the affect of third-order intermodulation distortion on the performance of receiver, and presents the design method and technical specifications of principle prototype.