發(fā)布時(shí)間：2018-11-19 07:20

【摘要】：隨著社會(huì)發(fā)展和科技的進(jìn)步,雷達(dá)無(wú)論是在軍事領(lǐng)域還是日常生活中都有著廣闊的應(yīng)用前景,從戰(zhàn)爭(zhēng)角度剖析,我們對(duì)雷達(dá)的要求是能夠及時(shí)、有效地處理目標(biāo)回波信號(hào),從而實(shí)現(xiàn)對(duì)大批量運(yùn)動(dòng)目標(biāo)的實(shí)時(shí)、有效搜索與跟蹤,即要對(duì)回波信號(hào)進(jìn)行合理的處理,提取出我們需要的目標(biāo)參數(shù),抑制掉我們不需要的雜波干擾信息,以實(shí)現(xiàn)引導(dǎo)火炮,導(dǎo)彈等武器對(duì)目標(biāo)實(shí)施攻擊。因此,雷達(dá)系統(tǒng)能否在復(fù)雜的電磁環(huán)境中發(fā)揮應(yīng)有的效能,已經(jīng)成為軍民用電子設(shè)備的一個(gè)亟須解決的問(wèn)題。在雷達(dá)接收的回波信號(hào)當(dāng)中,除了目標(biāo)信號(hào),往往還存在各式各樣的雜波干擾信號(hào),各種地物、云雨、海浪及敵人施放的金屬絲干擾等雜波常常和目標(biāo)信號(hào)相伴存在,提取相關(guān)參數(shù),抑制雜波干擾成為首要問(wèn)題。在抑制雜波中,如何有效的解“盲速”達(dá)到抑制雜波信號(hào)提高檢測(cè)能力就成為一項(xiàng)核心任務(wù),針對(duì)這一問(wèn)題,給出了參差MTI濾波器的設(shè)計(jì)與實(shí)現(xiàn)方法。針對(duì)此,本論文開(kāi)展了如下工作:首先介紹雷達(dá)雜波類型以及雜波特性,接著介紹雜波抑制常用方法,并給出了“盲速”問(wèn)題的模型,然后介紹了幾種解“盲速”的參差碼優(yōu)化算法,其中重點(diǎn)介紹了用遺傳算法來(lái)完成參差碼尋優(yōu)的過(guò)程,利用尋優(yōu)所得的參差碼進(jìn)行參差MTI設(shè)計(jì),達(dá)到解“盲速”及雜波抑制的目的,在該算法下,通過(guò)不同條件進(jìn)行濾波器設(shè)計(jì),對(duì)單雜波及多雜波情況下進(jìn)行雜波抑制和目標(biāo)檢測(cè)。并通過(guò)算法仿真,對(duì)所介紹方法進(jìn)行了性能分析。最后結(jié)合某雷達(dá)信號(hào)處理系統(tǒng)硬件平臺(tái),介紹了雷達(dá)信號(hào)處理硬件平臺(tái)的結(jié)構(gòu)和組成,以及算法實(shí)現(xiàn)方案,給出了參差MTI中的AMTI濾波器在單雜波和多雜波情況下,實(shí)現(xiàn)對(duì)雜波抑制的方法。并重點(diǎn)介紹了系統(tǒng)中通訊控制器的軟件設(shè)計(jì)及功能實(shí)現(xiàn),最后通過(guò)硬件的平臺(tái)搭建和硬件程序的調(diào)試,實(shí)現(xiàn)了參差MTI中的AMTI濾波器對(duì)單雜波和多雜波的抑制功能。
[Abstract]:With the development of society and the progress of science and technology, radar has a broad application prospect in military field and daily life. From the angle of war, our requirement for radar is to be able to deal with the target echo signal in time and effectively. In order to realize the real-time, effective search and tracking of mass moving targets, that is, to process the echo signal reasonably, to extract the target parameters that we need, and to suppress the clutter interference information that we do not need, so as to guide the artillery. Missiles and other weapons attack targets. Therefore, whether the radar system can play its due effect in the complex electromagnetic environment has become an urgent problem for military and civilian electronic equipment. Among the echo signals received by radar, in addition to the target signal, there are often all kinds of clutter jamming signals. Clutter such as various ground objects, clouds and rain, waves and metal wire interference from the enemy often accompany the target signal. The most important problem is to extract the relevant parameters and suppress clutter interference. In the suppression of clutter, how to solve the blind velocity effectively to improve the detection ability of clutter suppression signal becomes a core task. In view of this problem, the design and implementation method of staggered MTI filter is presented. In this paper, the following works are carried out: firstly, the types and characteristics of radar clutter are introduced, then the common methods of clutter suppression are introduced, and the model of "blind velocity" problem is given. Then, this paper introduces several optimization algorithms of staggered codes for "blind speed", in which genetic algorithm is used to complete the optimization of staggered codes, and the staggered MTI is designed by using the staggered codes obtained by optimization. To solve the problem of blind velocity and clutter suppression, the filter is designed under different conditions for clutter suppression and target detection in the case of single clutter and multiple clutter. And through the algorithm simulation, the performance of the introduced method is analyzed. Finally, combined with the hardware platform of a radar signal processing system, the structure and composition of radar signal processing hardware platform and the algorithm implementation scheme are introduced. The AMTI filter in staggered MTI is given in the case of single clutter and multiple clutter. The method of clutter suppression is realized. The software design and function realization of the communication controller in the system are emphatically introduced. Finally, the suppression function of AMTI filter in staggered MTI to single clutter and multi-clutter is realized through hardware platform construction and hardware program debugging.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN957.51

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳圖強(qiáng),張功;雷達(dá)運(yùn)動(dòng)雜波速度的估計(jì)[J];現(xiàn)代雷達(dá);2001年03期

2 王新智,劉雨;幅度雜波圖中篩選技術(shù)的應(yīng)用[J];電光與控制;2003年02期

3 閆修林,阮增苗;雜波圖技術(shù)在雷達(dá)終端信號(hào)處理中的應(yīng)用[J];現(xiàn)代雷達(dá);2004年05期

4 張敬松;潘健;;通用型雷達(dá)動(dòng)態(tài)雜波圖對(duì)消系統(tǒng)[J];現(xiàn)代雷達(dá);2007年04期

5 周祖成,史紅民;雷達(dá)動(dòng)態(tài)雜波圖與雜波區(qū)選擇[J];電子學(xué)報(bào);1988年05期

6 申宏亞;雜波圖及其在增益控制中的應(yīng)用[J];雷達(dá)與對(duì)抗;1997年01期

7 劉俊濤;侯穎妮;宋萬(wàn)杰;吳順君;;輪廓雜波圖恒虛警處理中面雜波性能分析[J];電子學(xué)報(bào);2006年09期

8 黃松浦;;雜波圖:設(shè)計(jì)和性能[J];現(xiàn)代雷達(dá);1986年01期

9 溫博;鄭遠(yuǎn);劉兵;;基于零頻抑制與雜波圖的地面慢速目標(biāo)檢測(cè)[J];電子設(shè)計(jì)工程;2014年10期

10 吳永輝,石斌斌,馬曉巖;瑞利與非瑞利雜波背景下單、雙參數(shù)雜波圖的性能分析[J];雷達(dá)與對(duì)抗;2002年03期

相關(guān)會(huì)議論文 前2條

1 張偉;向敬成;胡美莉;肖國(guó)強(qiáng);;三毫米相參脈沖雷達(dá)信號(hào)處理系統(tǒng)的實(shí)驗(yàn)研究[A];第十屆全國(guó)信號(hào)處理學(xué)術(shù)年會(huì)（CCSP-2001）論文集[C];2001年

2 黃旋旋;何彩芬;丁燁毅;朱龍彪;;寧波非氣象雷達(dá)回波的人工智能識(shí)別及濾波方法初探[A];中國(guó)氣象學(xué)會(huì)2006年年會(huì)“氣象雷達(dá)及其應(yīng)用”分會(huì)場(chǎng)論文集[C];2006年

相關(guān)碩士學(xué)位論文 前4條

1 吳靜;機(jī)場(chǎng)跑道異物檢測(cè)技術(shù)研究與實(shí)現(xiàn)[D];電子科技大學(xué);2014年

2 吳奇;濱海復(fù)雜背景下機(jī)載雷達(dá)非均勻雜波的建模與仿真研究[D];電子科技大學(xué);2015年

3 宋銳;參差MTI優(yōu)化設(shè)計(jì)及硬件實(shí)現(xiàn)[D];西安電子科技大學(xué);2014年

4 田力;電離層雜波提取算法研究及工程實(shí)現(xiàn)[D];哈爾濱工業(yè)大學(xué);2014年

，

本文編號(hào)：2341531