高采樣率GPS動態(tài)精密定位數(shù)據處理及其應用研究
本文關鍵詞: 高采樣率動態(tài)GPS TRACK GPSTOOLS 衛(wèi)星鐘差 形變分析 出處:《西安科技大學》2013年碩士論文 論文類型:學位論文
【摘要】:傳統(tǒng)的觀點認為, GPS大地測量主要集中于研究地殼長周期變化特征,但隨著GPS觀測精度和處理方法的不斷改進和提高,高采樣率和超高采樣率GPS接收機的相繼出現(xiàn),,使得GPS測量在研究地殼瞬時形變方面有了巨大的發(fā)展。本論文目的是研究高采樣率動態(tài)GPS數(shù)據的解算方法與應用前景。在此基礎上,本文針對高采樣率動態(tài)GPS數(shù)據處理中考慮的一些因素進行了如下研究: (1)系統(tǒng)分析了高采樣率GPS數(shù)據處理方法以及GPS數(shù)據處理中參考框架問題。討論了不同頻率載波相位的線性組合及應用。分析了影響GPS定位精度的主要因素及消除和減弱方法。 (2)介紹了GAMIT中高精度事后動態(tài)定位模塊TRACK以及東京海洋大學研制的GPS精密單點數(shù)據處理軟件GPSTOOLS。系統(tǒng)闡述了TRACK的參數(shù)設置方法以及TRACK模塊的模糊度解算方法。同時結合上述軟件通過算例分析了相對動態(tài)定位和精密單點定位兩種處理方法在高采樣率GPS數(shù)據處理中的定位精度。 (3)分析了不同采樣間隔的衛(wèi)星鐘差數(shù)據對精密單點定位的影響,選用幾種常用的插值方法對5min和30s采樣間隔的鐘差數(shù)據進行加密,對比分析各種插值方法的插值效果。 (4)通過利用高采樣率車載實驗數(shù)據對車載接收機的運動軌跡進行分析,以及對2010年墨西哥地震震時5Hz觀測數(shù)據進行處理,分析震時地表形變位移。通過分析兩個實例,驗證高采樣率GPS動態(tài)定位在研究物體瞬時變化中的應用前景。
[Abstract]:The traditional view is that GPS geodesy mainly focuses on studying the characteristics of long period crustal variation. However, with the continuous improvement and improvement of GPS observation accuracy and processing methods, high sampling rate and ultra-high sampling rate GPS receivers appear one after another. GPS measurement has made great progress in the study of crustal instantaneous deformation. The purpose of this paper is to study the calculation method and application prospect of dynamic GPS data with high sampling rate. In this paper, some factors considered in dynamic GPS data processing with high sampling rate are studied as follows:. In this paper, the methods of GPS data processing at high sampling rate and the reference frame in GPS data processing are systematically analyzed. The linear combination and application of different frequency carrier phases are discussed. The main factors affecting the positioning accuracy of GPS and the methods of eliminating and weakening are analyzed. In this paper, the high precision post dynamic positioning module (TRACK) in GAMIT and the GPS precise single point data processing software GPSTOOLSdeveloped by Tokyo Ocean University are introduced. The parameter setting method of TRACK and the ambiguity resolution method of TRACK module are systematically described. The positioning accuracy of relative dynamic positioning and precise single point positioning in GPS data processing with high sampling rate is analyzed by examples. The influence of satellite clock difference data with different sampling intervals on precise single point positioning is analyzed. Several commonly used interpolation methods are used to encrypt the clock difference data between 5 min and 30 s sampling intervals. The interpolation results of various interpolation methods are compared and analyzed. In this paper, the motion trajectory of the vehicle-mounted receiver is analyzed by using the high sampling rate vehicle-borne experimental data, and the 5Hz observation data of the Mexico earthquake on 2010 are processed to analyze the ground deformation displacement during the earthquake. Two examples are analyzed. Verify the application prospect of high sampling rate GPS dynamic location in studying the instantaneous change of object.
【學位授予單位】:西安科技大學
【學位級別】:碩士
【學位授予年份】:2013
【分類號】:P228.4
【參考文獻】
相關期刊論文 前10條
1 葉聰云;羅濤;陳遠;張明;;精密衛(wèi)星鐘差的內插方法研究[J];測繪信息與工程;2008年01期
2 蘇小寧;孟國杰;胡叢瑋;伍吉倉;;基于TRACK進行GPS單歷元定位[J];大地測量與地球動力學;2009年03期
3 殷海濤;甘衛(wèi)軍;肖根如;王現(xiàn)玲;李杰;;利用高頻GPS技術進行強震地面運動監(jiān)測的研究進展[J];地球物理學進展;2009年06期
4 黃立人;易長榮;占惠;;GPS觀測得到的汶川地震遠場地面運動[J];工程地球物理學報;2008年06期
5 孟國杰;任金衛(wèi);金紅林;李鵬;;GPS高頻數(shù)據處理方法及其在地震學中的應用研究進展[J];國際地震動態(tài);2007年07期
6 王波;張書畢;李益斌;卞和方;;精密GPS衛(wèi)星鐘差兩種插值方法的比較[J];全球定位系統(tǒng);2007年06期
7 劉美生;楊春生;羅發(fā)貴;王蛟茹;;利用GPS技術進行汽車運動穩(wěn)定性測試技術研究[J];中國測試技術;2008年05期
8 羅志才,陳永奇,劉焱雄;GPS用于監(jiān)測高層建筑物動態(tài)特征的模擬研究[J];武漢測繪科技大學學報;2000年02期
9 劉經南,葉世榕;GPS非差相位精密單點定位技術探討[J];武漢大學學報(信息科學版);2002年03期
10 韓保民;;精密衛(wèi)星鐘差加密方法及其對星載GPS低軌衛(wèi)星定軌精度影響[J];武漢大學學報(信息科學版);2006年12期
本文編號:1507844
本文鏈接:http://sikaile.net/kejilunwen/dizhicehuilunwen/1507844.html