摘要：雷达在综合战争中占据着非常重要的地位，而雷达干扰机旨在迷惑或阻止雷达探测到目标。雷达干扰模拟器是指在模拟的实验环境中对其进行设计和效果验证，这是一种低成本、高收益的科研手段。因此，本文针对雷达干扰模拟器，从以下两个方面进行研究：第一，雷达干扰模拟器的整体结构设计；第二，压制式和欺骗式干扰系统的理论分析及其MATLAB仿真。

数字射频存储器（DRFM）是雷达干扰模拟器的核心部分，它可以对所接收的雷达信号进行采样、量化、编码和存储，然后将调制产生的干扰信号送入发射通道，所以近年来，数字射频存储技术是对新型雷达的有力干扰手段。本文基于DRFM技术讨论了雷达干扰模拟器的整体组成，然后在满足指标要求的基础上，对收发通道中的关键器件进行了选择和性能分析。最后，研究了有源干扰中的压制干扰和欺骗干扰，具体涉及射频噪声干扰、距离拖引干扰和速度拖引干扰这三种最基本的干扰方式，在对它们进行理论分析的基础上，建立MATLAB程序对干扰效果进行了验证，结果是与理论一致。

关键词  雷达信号  干扰模拟器  DRFM  理论分析  MATLAB仿真

毕业设计说明书外文摘要

Title  Research on radar jamming simulator based on MATLAB  

Abstract：Radar in the comprehensive war occupies a very important position, and radar jammers aim to confuse or prevent the radar to detect the target. Radar jamming simulator is a kind of low cost and high yield scientific research method which is designed and verified in the simulated experimental environment. Therefore, this paper studies the radar interference simulator from the following two aspects: First, the overall structure of radar interference simulator design; Second, the suppression and deceptive interference system theory analysis and MATLAB simulation.

Digital radio frequency memory (DRFM) is the core of the radar interference simulator, it can receive the radar signal sampling, quantization, coding and storage, and then the modulation of the interference signal into the launch channel, so in recent years, digital radio Storage technology is a powerful means of interference for new radar. Based on the DRFM technique, the whole composition of the radar jamming simulator is discussed. Then, based on the requirement of the index, the key devices in the transceiver channel are selected and analyzed. Finally, the three basic interference modes of RF noise interference, distance drag jamming and velocity drag jamming are studied in this paper. Based on the theoretical analysis of them, MATLAB program to verify the effect of interference, the result is consistent with the theory.

Keywords  Radar signal  interference simulator  DRFM  theoretical analysis   MATLAB design

目   次

1  引言 1

1.1  研究背景 1

1.2  雷达干扰技术的现状及发展趋势 1

1.2.1  雷达干扰技术分类 1

1.2.2  雷达干扰技术的研究现状 2

1.2.3  雷达干扰技术的发展趋势 2

1.3  论文的主要工作 3

2  雷达干扰模拟器整体结构设计 4

2.1  总体结构 4

2.2  数字射频存储器（DRFM） 5

2.2.1  数字射频存储器的实现结构和储频技术 5

2.2.2  单通道幅度量化数字射频存储器设计 6

2.3  本章小结 6

3  雷达干扰模拟器通道研究 7

3.1  雷达干扰模拟器的超宽带射频前端方案设计 7

3.2  雷达干扰模拟器前端关键器件的选择 8

3.2.1  接收和发射天线 8

3.2.2  天线开关 10

3.2.3  开关滤波器组 10

3.2.4  低噪声放大器 11

3.2.5  混频器 12

3.2.6  本振信号源组 14