MATLAB数字信道化接收机设计+文献综述

电子战接收机一般具有很宽的频率范围，灵敏度高，动态范围大，以及同时到达的信号检测与实时处理能力。数字信道化接收机有其独特的优势，截取概率高，灵敏度高，动态范围大，具有良好的频率分辨率，并能对同时到达的信号进行处理，这些都是国内和国外近几年在电子战装备技术方面的研究重点。本文主要研究了数字信道化接收的高效结构，在具体实现中，设计了抽取滤波的中频接收机方案，并根据实际工程需求，对数字信道化接收的 FPGA 实现进行了相关技术研究。首先，基于宽带数字接收机的基础理论，深入研究推导了基于多相DFT的数字信道化接收的高效结构。另外，研究了数字信道化 FPGA实现的相关技术，包括正交数字下变频技术、滤波技术等。最后对系统方案进行了MATLAB和 FPGA仿真，通过仿真分析验证了方法的正确性，达到了项目需求。8197
关键词：软件无线电    数字信道化接收机   多相滤波器   FPGA Title
Digital Channelized Receiver Design
Abstract
The electronic warfare receiver generally includes wideband frequency
coverage bound, high sensitivity, biggish dynamic range and ability of
detecting and processing synchronous signals. As a kind of digital
receiver, digital channelized receiver has a unique superior performance,
high probability of interception, high sensitivity, large dynamic range,
good frequency resolution, and the ability of simultaneous signal
processing. These are the research hotspots of electronic warfare
equipment technology at home and abroad in recent years．
In this paper, we mainly studies the efficient architecture of digital
channelized receiver. A method in FPGA implementation of wideband digital
IF receivers to fulfill decimation and filtering is designed. According
to the demand of actual engineering, we also make related technical
research on FPGA realizing. First of all, base on the basic theory of
broadcast digital receivers, the efficient structure of digital
channelized receiver based on multiphase DFT has been discussed in depth.
Next, the relevant technologies of digital channelized FPGA realizing are
studied, such as orthogonal digital down-converter, filter technology,
etc. Finally, the program of the system is simulated based on MATLAB and
FPGA, the simulation analysis verify the correctness of the method, meet
the project requirements.
Keyword：Software Radio，digital channelized receiver, Polyphase filters,
FPGA. 目录
第1章绪论. 1
1.1研究背景及意义 .. 1
1.2数字信道化接收机的发展状况 .. 2
1.3本文的主要研究内容与工作    3
第2章基于多相滤波的数字信道化接收机理论分析 .. 5
2.1软件无线电简介 .. 5
2.2采样理论.. 5
2.2.1 Nyquist采样定理 . 6
2.2.2 带通采样理论 . 6
2.3多速率信号处理 .. 8
2.3.1 整数倍抽取 .. 8
2.3.2 多相滤波结构 . 9
2.4数字下变频（DDC）技术    11
2.5数字信道化接收机相关理论结构 .. 12
2.5.1 数字信道化接收机原理 . 12
2.5.2 数字信道化接收机基本结构 .. 13
2.5.3 基于多相滤波的数字信道化接收机高效结构 . 14
2.5.4 信道化接收机优点    15
2.6小结 . 16
第3章系统方案设计及仿真 . 17
3.1信道化接收机系统方案设计 . 17 MATLAB数字信道化接收机设计+文献综述:http://www.751com.cn/tongxin/lunwen_6436.html