本文選題：GPS + 坐標(biāo)時間序列　； 參考：《長安大學(xué)》2013年碩士論文

【摘要】：高精度GPS站點坐標(biāo)時間序列，是對站點連續(xù)觀測數(shù)據(jù)經(jīng)過精密解算后得到的高精度位置信息序列，它既是對站點位置連續(xù)性的描述，也是對站點穩(wěn)定性的反映。通過對站點位置時間序列的研究分析，可以獲取板塊運動規(guī)律、地球震蕩周期變化等信息，這對維護和更新地球參考框架，探求和揭示大地構(gòu)造變形運動過程、動力學(xué)機制及地震活動等相關(guān)科學(xué)問題具有十分重要的意義。論文圍繞影響高精度GPS坐標(biāo)時間序列的誤差分析、GPS高程時間序列的周期項提取、高頻GPS時間序列的噪聲處理等方面展開分析討論。 （1）高精度GPS站點時間序列的獲取是進行時間序列分析并提取相關(guān)信息的前提和基礎(chǔ)。論文首先從對流層延遲、海潮負荷、天線相位中心偏差和地球參考框架影響等幾方面分析影響高精度GPS站點坐標(biāo)精度的因素，通過計算重點討論了天線相位中心偏差和地球參考框架對GPS站點坐標(biāo)精度帶來的影響，得出了一些有意義的結(jié)論。 （2）介紹了時間序列的幾種常用分析方法，并通過模擬數(shù)據(jù)計算發(fā)現(xiàn)：譜分析對短周期項比較敏感，，而高低頻相結(jié)合的小波分析方法對長短周期項的提取整體比較可靠�；诖�，論文針對全球近三百個IGS站高程時間序列，應(yīng)用高低頻相結(jié)合的小波分析方法進行周期項提取，獲得了周年項周期振蕩圖、半周年項周期振蕩圖和一季周期振蕩圖，為高程方向的季節(jié)性變化研究提供了參考。 （3）闡述了高頻GPS單歷元定位理論，分析了影響定位精度的誤差源。由于單歷元定位無法使用長時間平均法來消除殘留系統(tǒng)誤差，顧及多路徑效應(yīng)及軌道誤差存有明顯周期性特點，提出利用恒星日濾波技術(shù)和空間濾波技術(shù)來削弱其影響。通過實例驗證，具有較明顯的效果。
[Abstract]:The high precision GPS site coordinate time series is a high precision position information sequence obtained from the precise calculation of the station continuous observation data. It is not only a description of the site position continuity, but also a reflection of the site stability. Through the research and analysis of the time series of the site location, we can obtain the information of plate motion law and the change of the earth oscillation period, which can help us to maintain and renew the earth reference frame, and to explore and reveal the process of tectonic deformation movement. The dynamic mechanism and seismic activities are of great significance. In this paper, the error analysis of high precision GPS coordinate time series is discussed, such as the period term extraction of GPS height time series, the noise processing of high frequency GPS time series, and so on. The acquisition of high precision GPS site time series is the premise and foundation of time series analysis and extraction of relevant information. Firstly, the factors influencing the coordinate accuracy of high precision GPS stations are analyzed from tropospheric delay, ocean tide load, antenna phase center deviation and the influence of the earth reference frame. The effect of the antenna phase center deviation and the earth reference frame on the coordinate accuracy of the GPS station is discussed in detail, and some meaningful conclusions are obtained. This paper introduces several common analysis methods of time series, and finds that spectral analysis is more sensitive to short period terms, while wavelet analysis method combined with high and low frequency is more reliable for extracting long and short period terms. Based on this, this paper applies wavelet analysis method combined with high and low frequency to extract the periodic term for nearly 300 IGS station height time series, and obtains the annual term periodic oscillation diagram, the semi-annual term periodic oscillation diagram and the one-quarter periodic oscillation diagram. It provides a reference for the study of seasonal variation of elevation direction. The high frequency GPS single epoch positioning theory is expounded, and the error sources that affect the positioning accuracy are analyzed. Because the single epoch location can not eliminate the residual system error by using the long-time averaging method, considering the multipath effect and the obvious periodicity of the orbit error, this paper proposes to use the star day filtering technique and the spatial filtering technique to weaken its influence. It has been proved by an example that it has obvious effect.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P228.4

【引證文獻】

相關(guān)期刊論文 前3條

1 陳運;吳志露;何麗娜;;小波分析在垂向海潮特征信息去噪研究[J];測繪工程;2017年03期

2 鄧興升;尹梁波;彭思淳;;高頻單歷元GPS周期性誤差特性分析[J];大地測量與地球動力學(xué);2016年07期

3 董偉;;小波分析在GPS時間序列分析中的運用[J];水利水電快報;2015年06期

相關(guān)碩士學(xué)位論文 前3條

1 韓冬;基于GAMIT/GLOBK的魯?shù)榈卣饘ッ鰿ORS站的幾何形變影響分析[D];昆明理工大學(xué);2016年

2 王默然;南極GPS坐標(biāo)時間序列時頻分析研究[D];華北理工大學(xué);2016年

3 王斌;CORS系統(tǒng)在地表形變監(jiān)測中的應(yīng)用研究[D];東南大學(xué);2015年

本文編號：1967583