發(fā)布時(shí)間：2018-08-07 06:55

【摘要】：無線電技術(shù)是21世紀(jì)發(fā)展非常迅速的技術(shù)之一,而無線電監(jiān)測在無線電技術(shù)中扮演著至關(guān)重要的作用。無線電監(jiān)測的主要內(nèi)容是對(duì)無線電信號(hào)進(jìn)行分析識(shí)別和參數(shù)測量,主要目的是進(jìn)行目標(biāo)測向和定位工作,從而獲得信號(hào)的有效信息,對(duì)無線電頻譜資源進(jìn)行相應(yīng)的管理和維護(hù),維護(hù)公民信息財(cái)產(chǎn)安全和社會(huì)經(jīng)濟(jì)持續(xù)健康發(fā)展。目前無線電監(jiān)測中無線電信號(hào)參數(shù)的測量、同步技術(shù)、無線電信號(hào)測向和定位技術(shù)都是研究的熱點(diǎn)。本文主要采用軟件無線電技術(shù)對(duì)上述的熱點(diǎn)問題進(jìn)行研究。本文首先介紹了無線電監(jiān)測系統(tǒng)的構(gòu)成、基本功能、軟件無線電系統(tǒng)的基本框架,無線電監(jiān)測的主要內(nèi)容和監(jiān)測系統(tǒng)中關(guān)鍵技術(shù)的國內(nèi)外研究現(xiàn)狀。然后,以軟件無線電作為基礎(chǔ),建立了不同無線電信號(hào)調(diào)制下的參數(shù)測量模型。在模擬無線電信號(hào)中,進(jìn)行了調(diào)幅、調(diào)相和調(diào)頻參數(shù)測量模型的建立,完成了幅值、相位和頻率的解調(diào),并通過MATLAB仿真驗(yàn)證了模型建立的正確性。同時(shí),對(duì)數(shù)字信號(hào)中廣泛關(guān)注的載波同步技術(shù)進(jìn)行了研究。接著,討論和分析了無線電測向技術(shù),闡述了無線電測向的頻段范圍,測向系統(tǒng)的主要構(gòu)成。研究了基于線性陣列的空間譜估計(jì)算法的無線電測向方法,分析了相位測向、幅度測向和空間譜估計(jì)測向各自的優(yōu)缺點(diǎn),對(duì)測向技術(shù)數(shù)據(jù)處理中的測量進(jìn)行了誤差分析和誤差修正。最后,著重研究了無線電定位算法,對(duì)到達(dá)時(shí)間差算法(TDOA)的定位算法進(jìn)行了模型建立和MATLAB仿真。同時(shí),分析了TDOA系統(tǒng)中存在的延時(shí),在幾種時(shí)延估計(jì)方法的基礎(chǔ)上,建立了改進(jìn)的時(shí)延模型,進(jìn)行了仿真驗(yàn)證,證明了本文提出的時(shí)延估計(jì)算法的優(yōu)越性。
[Abstract]:Radio technology is one of the rapidly developing technologies in the twenty-first Century, and radio monitoring plays an important role in radio technology. The main content of radio monitoring is to identify and measure the radio signals. The main purpose of the radio monitoring is to carry out the target direction finding and positioning, so as to obtain the effective information of the signal, The radio spectrum resources are managed and maintained accordingly, and the security of citizens' information and property and the sustained and healthy development of the social economy are maintained. At present, the measurement of radio signal parameters, synchronization technology, radio signal direction finding and positioning are the hot spots in the radio monitoring. This paper first introduces the composition of the radio monitoring system, the basic function, the basic framework of the software radio system, the main content of the radio monitoring and the research status of the key technologies in the monitoring system at home and abroad. Then, based on the software radio, the parameters of different radio signal modulation are set up. In the analog radio signal, the amplitude modulation, phase modulation and frequency modulation parameter measurement model is established in the analog radio signal. The demodulation of amplitude, phase and frequency is completed, and the correctness of the model is verified by MATLAB simulation. At the same time, the carrier step technology which is widely concerned in the digital signal is studied. Then, the wireless communication is discussed and analyzed. The frequency range of the radio direction finding and the main composition of the direction finding system are expounded. The radio direction finding method based on the spatial spectrum estimation algorithm based on linear array is studied. The advantages and disadvantages of the phase direction finding, the amplitude direction finding and the spatial spectrum estimation are analyzed, and the error analysis of the measurement in the data processing of the measurement direction technology is analyzed. In the end, we focus on the study of the radio location algorithm, the model establishment of the arrival time difference algorithm (TDOA) and the MATLAB simulation. At the same time, the delay in the TDOA system is analyzed. On the basis of several time delay estimation methods, the modified time delay model is established, and the simulation verification is carried out. It is proved that this paper is proposed in this paper. The superiority of the proposed time delay estimation algorithm.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN98

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊向星;張群;梁賢姣;李開明;孫鳳蓮;;基于CDMA信號(hào)的TDOA定位時(shí)延參數(shù)獲取算法[J];科學(xué)技術(shù)與工程;2012年27期

2 喬梁;;智能文化算法在移動(dòng)臺(tái)定位技術(shù)中的應(yīng)用研究[J];哈爾濱理工大學(xué)學(xué)報(bào);2012年01期

3 郝明;方亮;;兩種無線定位算法的仿真分析[J];內(nèi)江科技;2011年12期

4 陶然;;對(duì)干擾定位失敗案例的思考[J];中國無線電;2011年10期

5 許銳;金亮;徐弘良;;現(xiàn)階段傳感器無線電監(jiān)測網(wǎng)的研究要點(diǎn)[J];中國無線電;2011年05期

6 唐_";郭慶;彭保;;一種基于優(yōu)化TDOA的無線傳感網(wǎng)絡(luò)定位算法[J];計(jì)算機(jī)工程與應(yīng)用;2008年25期

7 黃曉利;王福豹;段渭軍;楊躍;;無線傳感器網(wǎng)絡(luò)TDOA測距誤差分析與校正[J];計(jì)算機(jī)測量與控制;2008年07期

8 羅磊;田增山;孫冬梅;劉治生;;基站幾何布局對(duì)定位誤差的影響[J];通信技術(shù);2008年02期

9 朱慶厚;;到達(dá)時(shí)間差(TDOA)測向定位研究[J];電訊技術(shù);2007年01期

10 周江 ,孫獻(xiàn)璞;無線電定位技術(shù)在蜂窩通信系統(tǒng)中的應(yīng)用及實(shí)現(xiàn)[J];今日電子;2003年04期

相關(guān)碩士學(xué)位論文 前4條

1 馮正;高速異常飛行體落點(diǎn)定位系統(tǒng)軟件設(shè)計(jì)[D];中北大學(xué);2009年

2 佘青松;無源探測定位技術(shù)研究[D];電子科技大學(xué);2007年

3 付翔;國家無線電短波監(jiān)測系統(tǒng)測向定位功能的設(shè)計(jì)與實(shí)現(xiàn)[D];四川大學(xué);2006年

4 杜小光;軟件無線電調(diào)制方式識(shí)別及解調(diào)算法仿真研究[D];吉林大學(xué);2006年

，

本文編號(hào)：2169227