發(fā)布時(shí)間：2018-10-09 17:58

【摘要】：高精度的時(shí)差頻差定位方法是衛(wèi)星定位研究領(lǐng)域的關(guān)鍵技術(shù),隨著國(guó)內(nèi)衛(wèi)星導(dǎo)航與定位應(yīng)用技術(shù)的迅速發(fā)展,它在民用和軍事領(lǐng)域中受到了越來(lái)越廣泛的應(yīng)用。因此,對(duì)高精度的時(shí)差頻差定位方法的研究具有重要的理論意義和應(yīng)用價(jià)值。本文在雙星定位的研究背景下,深入研究了基于雙通道的頻差測(cè)量方法和基于頻差時(shí)差的聯(lián)合定位的技術(shù)。論文主要內(nèi)容如下： 1在單通道多普勒測(cè)頻的基礎(chǔ)上研究了一種新的高精度多普勒頻差測(cè)量方法。該方法通過(guò)兩通道數(shù)據(jù)相關(guān)和接收信號(hào)的包絡(luò)斜率測(cè)量分別獲得了多普勒頻率的基帶頻差和模糊數(shù)差。并根據(jù)基頻差和模糊數(shù)差獲得基于雙通道的高精度多普勒頻差測(cè)量結(jié)果。 2利用基于雙通道的高精度多普勒頻差測(cè)量方法對(duì)常見(jiàn)的單頻信號(hào)、線性調(diào)頻信號(hào)、二相編碼信號(hào)、四相編碼信號(hào)進(jìn)行仿真測(cè)試和分析,驗(yàn)證了該方法的有效性。并針對(duì)信號(hào)抖動(dòng)、不同信噪比和所需脈沖數(shù)等條件進(jìn)行了算法適用性仿真。 3分別介紹了時(shí)差定位原理、頻差定位原理和空間坐標(biāo)系轉(zhuǎn)換公式,為時(shí)差頻差聯(lián)合定位方法的研究提供理論基礎(chǔ)。 4詳細(xì)介紹了時(shí)差頻差定位原理,并在獲得精確的頻差和時(shí)差參數(shù)的基礎(chǔ)上研究了雙星時(shí)差頻差聯(lián)合定位方法。該方法是用頻差定位來(lái)彌補(bǔ)時(shí)差定位的缺陷,從而有效地提高了時(shí)差定位的定位精度。
[Abstract]:With the rapid development of the domestic satellite navigation and positioning technology, the high-precision time-difference frequency difference positioning method is the key technology in the field of satellite positioning. With the rapid development of the domestic satellite navigation and positioning technology, it has been more and more widely used in civil and military fields. Therefore, the research of high precision time difference frequency difference location method has important theoretical significance and application value. In this paper, under the background of dual satellite positioning, the frequency difference measurement method based on two channels and the joint location technology based on frequency difference time difference are deeply studied. The main contents of this paper are as follows: 1 based on the single channel Doppler frequency measurement, a new high precision Doppler frequency difference measurement method is studied. The base-band frequency difference and the ambiguity number difference of the Doppler frequency are obtained by measuring the envelope slope of the two-channel data correlation and the received signal, respectively. According to the fundamental frequency difference and the ambiguity number difference, the high precision Doppler frequency difference measurement results based on two channels are obtained. 2 the high precision Doppler frequency difference measurement method based on two channels is used to simulate and analyze the common single frequency signal, linear frequency modulation signal, two phase coded signal and four phase coded signal, and the validity of the method is verified. The applicability of the algorithm is simulated for signal jitter, different signal-to-noise ratio (SNR) and pulse number. (3) the principle of time-difference location, the principle of frequency-difference positioning and the transformation formula of spatial coordinate system are introduced respectively, and the theoretical basis is provided for the study of the joint location method of time-difference frequency difference. 4. The principle of TDOA location is introduced in detail, and on the basis of obtaining accurate frequency difference and time difference parameters, the combined TDOA positioning method is studied. In this method, frequency difference positioning is used to make up for the defect of time difference location, and the precision of time difference location is improved effectively.
【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】：2013
【分類(lèi)號(hào)】：P228.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭艷麗,楊紹全;差分多普勒無(wú)源定位[J];電子對(duì)抗技術(shù);2002年06期

2 徐昂;樊士偉;張勇;;一種基于概率的雙星無(wú)源定位算法[J];飛行器測(cè)控學(xué)報(bào);2008年04期

3 郭福成;樊昀;;雙星TDOA/FDOA無(wú)源定位方法分析[J];航天電子對(duì)抗;2006年06期

4 郭賢生;萬(wàn)群;劉霞;楊萬(wàn)麟;;數(shù)字地圖輔助的雙星時(shí)差頻差聯(lián)合定位方法[J];計(jì)算機(jī)工程與應(yīng)用;2006年23期

5 丁靜;一種用時(shí)差頻差對(duì)地面輻射源定位的新方法[J];無(wú)線電工程;2004年08期

6 張正明,楊紹全;多普勒頻率差定位技術(shù)研究[J];西安電子科技大學(xué)學(xué)報(bào);2000年06期

7 謝愷;鐘丹星;鄧新蒲;周一宇;;一種空間時(shí)差定位的新算法[J];信號(hào)處理;2006年02期

8 郭福成;樊昀;;雙星時(shí)差頻差聯(lián)合定位方法及其誤差分析[J];宇航學(xué)報(bào);2008年04期

9 王海麗,任萱,陳磊;三星時(shí)差定位星座的定位精度分析[J];中國(guó)空間科學(xué)技術(shù);2000年05期

10 張勇;盛衛(wèi)東;郭福成;周伯昭;;低軌雙星無(wú)源定位算法及定位精度分析[J];中國(guó)慣性技術(shù)學(xué)報(bào);2007年02期

，

本文編號(hào)：2260247