摘要多载频相位编码信号作为一种新型宽带雷达信号,以其设计灵活、特性优良、处理 简单等优点引起人们的广泛关注。本文首先介绍了多载频雷达信号的起源和结构,推导 了多载频相位编码雷达信号的 PMEPR 表达式、模糊函数以及自相关函数;然后分析了载 频幅度加权和初相加权对 PMEPR 的优化,以及相位编码和载频加权对模糊函数及自相关 函数的影响;最后研究了一种基于随机移位相位编码的多载频相位编码雷达信号,分析 其原理及优化设计过程,并对设计好的雷达信号进行仿真,结果表明该信号具有低 PMEPR 值和低旁瓣特性。73799
毕业论文关键词 : 多载频;MCPC;相位编码;包络峰均比;模糊函数
毕 业 设 计 说 明 书 外 文 摘 要
Title The design of Multi-carrier phase-coded radar signal
Abstract
As a new wideband radar signal , Multi-carrier phase-coded signal had caused widespread concern because of its flexible design, excellent features, and simple processing。 This paper first introduced the source of multi-carrier frequency signal, analyzed its structure。 Then it deduced PMEPR expression 、ambiguity function and autocorrelation function of MCPC。 After that it analyzed optimization of PMEPR by the carrier frequency amplitude weighting and phase weighting 。Then this paper analyzed the impact of phase encoding on ambiguity function and autocorrelation function。 Finally, the paper studied a MCPC signal which was based on random shift phase encoding, then analyzed the design principle and optimization of the design process, and designed radar signal simulation results showed that the signal had a low value and low side lobe PMEPR characteristic。
Keywords : Multi-carrier; MCPC; Phase coded; PMEPR; Ambiguity function
第 I 页
目 次
1 绪论 1
1。1 研究背景及其意义 1
1。3 主要工作及结构安排 3
2 多载频雷达信号特性 4
2。1 引言 4
2。2 多载频雷达信号的结构 4
2。3 多载频雷达信号的包络 7
2。4 多载频雷达信号的模糊函数 7
2。5 小结 11
3 多载频相位编码雷达信号分析 12
3。1 引言 12
3。2 PMEPR 的优化 12
3。3 模糊函数的优化 16
3。4 小结 22
4 随机移位相位编码的 MCPC 信号设计