本文選題：小型合成孔徑雷達(dá)　切入點(diǎn)：線性調(diào)頻連續(xù)波　出處：《電子科技大學(xué)》2017年碩士論文

【摘要】：小型合成孔徑雷達(dá),即Mini SAR,不同于傳統(tǒng)的脈沖體制合成孔徑雷達(dá),是以合成孔徑雷達(dá)技術(shù)為基礎(chǔ),結(jié)合調(diào)頻連續(xù)波(FMCW)技術(shù),在FMCW-SAR體制上實(shí)現(xiàn)的小型化合成孔徑雷達(dá)系統(tǒng)。Mini SAR不僅跟普通SAR系統(tǒng)一樣,擁有二維高分辨率、全天時(shí)全天候工作等獨(dú)特優(yōu)點(diǎn),還具有重量輕、體積小、功耗低、高性價(jià)比等特點(diǎn)。Mini SAR可以搭載在無人機(jī)等小型平臺(tái)上,廣泛應(yīng)用于民用測繪、高危地區(qū)檢測、軍用目標(biāo)檢測與偵查等領(lǐng)域。本文以小型合成孔徑雷達(dá)軟件系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)為主要研究方向,論文中涵蓋了Mini SAR成像技術(shù)、Mini SAR系統(tǒng)的整體設(shè)計(jì)、Mini SAR軟件系統(tǒng)的設(shè)計(jì)等。結(jié)合工程實(shí)現(xiàn),文章著重對軟件系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)上的關(guān)鍵問題進(jìn)行了研究分析。完成的主要工作如下:1、研究分析了Mini SAR成像的關(guān)鍵技術(shù)。首先分析了線性調(diào)頻信號的信號特點(diǎn)和脈沖壓縮方法,得到了去調(diào)頻處理技術(shù)能簡化雷達(dá)系統(tǒng)硬件結(jié)構(gòu)的結(jié)論。基于傳統(tǒng)成像算法理論,推導(dǎo)了適用于Mini SAR的RD算法與波數(shù)域算法,并定性分析比較了兩種算法的運(yùn)算量,選擇了處理步驟與運(yùn)算量更少、成像效果較好的RD算法作為實(shí)時(shí)成像處理算法。2、結(jié)合工程實(shí)現(xiàn),給出Mini SAR系統(tǒng)的整體設(shè)計(jì),分析了系統(tǒng)工作過程中的信號處理流程�；诶走_(dá)系統(tǒng)的需求,設(shè)計(jì)了軟件系統(tǒng)的基本結(jié)構(gòu)框架。3、將軟件系統(tǒng)基于C/S結(jié)構(gòu)模式劃分成兩個(gè)模塊,根據(jù)各功能模塊的需求,對軟件系統(tǒng)進(jìn)行了詳細(xì)的設(shè)計(jì)與具體的實(shí)現(xiàn)。對于嵌入式應(yīng)用軟件,進(jìn)行了應(yīng)用任務(wù)的劃分設(shè)計(jì)、任務(wù)調(diào)度的設(shè)計(jì)、各個(gè)任務(wù)的具體實(shí)現(xiàn)。對于上位機(jī)軟件系統(tǒng),在Visual Studio 2013平臺(tái)下基于C#語言設(shè)計(jì)與實(shí)現(xiàn)了可靠的應(yīng)用軟件,其功能包括:對雷達(dá)的控制,實(shí)時(shí)接收數(shù)據(jù),信號處理等。4、對Mini SAR軟件系統(tǒng)進(jìn)行了測試驗(yàn)證。通過外場軌道實(shí)驗(yàn),驗(yàn)證了Mini SAR成像系統(tǒng)的正確性。
[Abstract]:Small synthetic Aperture Radar, or Mini SAR, is different from the traditional pulse system synthetic Aperture Radar, which is based on synthetic Aperture Radar (SAR) technology and combined with FM CW FMCW technology.The miniaturized synthetic Aperture Radar system .Mini SAR realized on FMCW-SAR system not only has the unique advantages of two-dimensional high resolution and all-weather operation, but also has the advantages of light weight, small volume and low power consumption.Mini SAR can be used on small platforms such as unmanned aerial vehicles (UAVs), which can be widely used in civil mapping, high risk area detection, military target detection and detection and so on.This paper focuses on the design and implementation of small synthetic Aperture Radar (SAR) software system. It covers the whole design of Mini SAR system based on Mini SAR imaging technology and the design of Mini SAR software system.Combined with engineering implementation, the key problems in software system design and implementation are studied and analyzed in this paper.The main work is as follows: 1: 1. The key techniques of Mini SAR imaging are studied and analyzed.Firstly, the characteristics of LFM signal and the pulse compression method are analyzed, and the conclusion is drawn that the deFM processing technology can simplify the hardware structure of radar system.Based on the traditional imaging algorithm theory, Rd algorithm and wavenumber domain algorithm suitable for Mini SAR are derived, and the computational complexity of the two algorithms is qualitatively analyzed and compared.Rd algorithm, which has good imaging effect, is used as real-time imaging processing algorithm. Combined with engineering implementation, the whole design of Mini SAR system is presented, and the signal processing flow in the working process of the system is analyzed.Based on the requirement of radar system, the basic structure frame of software system is designed. The software system is divided into two modules based on C / S structure mode. According to the requirements of each functional module, the software system is designed and implemented in detail.For embedded application software, the design of application task partition, task scheduling, and the implementation of each task are carried out.For the upper computer software system, a reliable application software based on C # language is designed and implemented on the platform of Visual Studio 2013. Its functions include radar control, real-time receiving data, signal processing and so on. The software system of Mini SAR is tested and verified.The correctness of the Mini SAR imaging system is verified by the field orbit experiment.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN958;TP311.52

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 肖磊;;VxWorks下基于socket的網(wǎng)絡(luò)通信設(shè)計(jì)[J];計(jì)算機(jī)與網(wǎng)絡(luò);2013年12期

2 湯金輝;李磊;趙玉新;;基于VxWorks的混合通信模式的UDP并發(fā)服務(wù)器的設(shè)計(jì)[J];應(yīng)用科技;2007年09期

3 韓放;謝紅;孫巍;;LFM脈沖壓縮技術(shù)仿真研究[J];信息技術(shù);2007年04期

4 楊曉靜;胡敏強(qiáng);吳在軍;李澄;;基于VxWorks的通信服務(wù)器實(shí)時(shí)多任務(wù)軟件設(shè)計(jì)[J];電力自動(dòng)化設(shè)備;2007年03期

5 姚迪;龍騰;;合成孔徑雷達(dá)實(shí)時(shí)距離徙動(dòng)校正算法研究[J];系統(tǒng)工程與電子技術(shù);2006年08期

6 李峰;應(yīng)宏;張軍;;利用TCP/IP實(shí)現(xiàn)Windows與Vxworks的通信[J];微計(jì)算機(jī)信息;2006年05期

7 陳金濤,許錄平,余柏生;基于VxWorks的雷達(dá)數(shù)據(jù)采集系統(tǒng)的設(shè)計(jì)與開發(fā)[J];現(xiàn)代雷達(dá);2005年09期

8 季志均,馬文麗,陳虎,鄭文嶺;四種嵌入式實(shí)時(shí)操作系統(tǒng)關(guān)鍵技術(shù)分析[J];計(jì)算機(jī)應(yīng)用研究;2005年09期

9 李慧,李濤,楊占華,萬瑋;Vx Works下基于多任務(wù)調(diào)度的分析和研究[J];微機(jī)發(fā)展;2005年06期

10 張林,王芙蓉;VxWorks嵌入式實(shí)時(shí)系統(tǒng)任務(wù)機(jī)制的研究[J];微型機(jī)與應(yīng)用;2005年03期

相關(guān)碩士學(xué)位論文 前1條

1 梅波;基于實(shí)測數(shù)據(jù)的SAR波數(shù)域成像算法研究[D];南京航空航天大學(xué);2002年

，

本文編號：1714949