【作者】 陈磊；

【导师】 朱兆君； 李杰；

【作者基本信息】 电子科技大学 ， 工程硕士（专业学位）， 2016， 硕士

【摘要】 航天通信侦察是以卫星为平台、以获取目标的工作频率、幅度、调制方式、信号带宽、信号特征、位置参数、起止时间、数量、工作频繁度、传送的情报内容、网台分布等为主要任务,为卫星作用区域内国家和地区的政治、经济、军事、外交等提供各方面的通信情报。随着现代电子技术的高速发展,对通信侦察接收机的工作频带、灵敏度、动态范围、频率稳定度和频率分辨率、干扰抑制能力、反应速度和实时处理能力等都提出了越来越高要求。现代航天通信侦察向着极宽频带、数字化、软件无线电的方向发展。本文所设计研制的接收机是航天通信侦察系统的重要组成部分,近年来,现代电子技术发展突飞猛进,从而对接收机的干扰抑制能力、反应速度和实时处理能力等都提出了新的要求。该领域目前正向软件工程化,数字化,高集成化发展。本文结合工作中型号任务需求,对接收机电路进行了广泛的调研工作,通过对电路以及电路中所用元器件的广泛调研,以多模式通信信号识别技术为基础,对接收机进行方案设计、电路仿真,随后对电路板进行加工生产,并进行了一系列的试验验证工作。研制出了一种可适应较宽的温度范围(-35~+70)、可对多种通信信号进行调制识别与处理,同时具有高可靠性的星载接收机。本文首先对卫星接收机的技术发展和国内外应用现状进行了回顾,简述了星载接收机的工作原理和电路组成。然后详细介绍了基于通信信号识别技术的星载接收机的设计方案,给出了电路包络仿真分析的结果。最后对研制过程和各阶段测试结果进行了详细的阐述。经过对测试结果的分析,验证了其作为星载设备的的实用性和高可靠性。更多还原

【Abstract】 Space communication reconnaissance is to gather political、economic、military and diplomatic intelligence in target countries or regions by reception of communication signals through a satellite platform.The main task for the platform is to analyze certain signal features such as working frequency,amplitude,modulation,bandwidth and characteristics of the signals,and the content,position,start and end time,number、frequency of appearance and the sources distribution of the signals.The receiver designed in this study is a critical part for the space communication reconnaissance system.With the rapid development of the advanced electronic technology,a higher capacity of interference suppression,respond speed and process capacity is required.Software engineering,digital design and high integration are three major trends in the development of contemporary space receiver.Based on the specific space project this study attached to,we carried out a wide range of study on the design of receiver circuit and the selection of electronic components.A subsequent improvement was made on the receiver design based on multi-mode communication signal recognition technology.Through circuit simulation on the design and a series of environment test on the prototype,a high performance,high reliability satellite receiver was achieved,with the capability of modulate and process various signals and a stable performance in a wide range of temperature(-35℃~+70℃).In this thesis,the development of satellite receiver and current application of this technology was briefly reviewed at first.Then we mainly focused on a detailed introduction on the design and circuit simulation result of the receiver based on communication signal recognition technology,and we introduced the process and results of the assembly and test.In the end,we concluded that the receiver was proved to be highly practical and reliable through the analysis and comparison of the test data of the receiver.更多还原