本文選題：衛(wèi)星測高 + 中國近海及鄰域��； 參考：《中國石油大學（華東）》2013年碩士論文

【摘要】：重力異常由于地球質(zhì)量分布不規(guī)則造成的重力場中各點的重力矢量和正常重力矢量的數(shù)量之差,是研究地球形狀、地球內(nèi)部結構和重力勘探，以及修正空間飛行器的軌道的重要數(shù)據(jù)，被廣泛應用于物理海洋學、地球物理學等領域的研究。但是長期以來探測方法單一與探測技術的落后使得海洋重力資料的嚴重缺乏,衛(wèi)星測高技術可以提供大范圍、高精度、長時間序列的海面觀測資料，其結果可以很好地詮釋海洋大地水準面和重力異常，具有傳統(tǒng)技術無可比擬的優(yōu)勢，逐步成為獲取海洋重力場數(shù)據(jù)的主要手段。 本文聯(lián)合利用Geosat、Geosat、ERS-1、ERS-1、ERS-2、Envisat、T/P、Jason-1和Jason-2多種測高衛(wèi)星數(shù)據(jù)，對數(shù)據(jù)進行數(shù)據(jù)編輯和共線處理，有效的減小了數(shù)據(jù)容量，再經(jīng)參考橢球和參考框架基準的統(tǒng)一得到海面高值，采用移去-恢復方法，基于EGM2008重力場模型和DNSC08海面地形模型，用相鄰測高點大地水準面高度的一次差分求沿軌垂線偏差，然后基于最小二乘原理直接解算了中國近海及其鄰域2′×2′分辨率垂線偏差子午分量和卯酉分量。基于逆Vening-Meinesz公式，采用不同的殘余垂線偏差范圍和不同的積分半徑分別反演中國近海及其鄰域重力異常，并與選擇中渤海地球和東海北部地區(qū)船測重力數(shù)據(jù)進行比對。 根據(jù)上述流程，，剔除殘余垂線偏差絕對值大于3″的點，以45′為積分半徑，確定了中國近海及其鄰域2′×2′分辨率重力異常，與船測重力數(shù)據(jù)進行比較，精度在3.92~4.437mGal之間，總體精度為4.154mGal。
[Abstract]:The difference between the number of gravity vectors at each point in the gravity field caused by the irregular distribution of the mass of the earth and the number of normal gravity vectors is the study of the shape of the earth, the internal structure of the earth and gravity exploration. It is widely used in the research of physical oceanography, geophysics and so on. However, for a long time, the singleness of exploration methods and the backwardness of detection techniques have made the marine gravity data seriously lacking. Satellite altimetry technology can provide large range, high precision and long time series sea surface observation data. The results can well interpret the ocean geoid and gravity anomaly, and have the unparalleled advantages of traditional technology, and gradually become the main means to obtain marine gravity field data. In this paper, the data are edited and collinear processed by using geosatine ERS-1 / ERS-1 / ERS-2 / Envisato T / P / Jason-1 and Jason-2 altimetry satellite data. The data capacity is reduced effectively, and then the sea surface height value is obtained by the unification of reference ellipsoid and reference frame datum, and the moving-recovery method is adopted. Based on EGM2008 gravity field model and DNSC08 sea surface terrain model, the vertical line deviation along the orbit is obtained by using the first order difference of geoid height of adjacent high points. Then, based on the least square principle, the meridian and unitary components of the vertical line deviation of 2'脳 2 'resolution in the coastal waters of China and its adjacent areas are directly solved. Based on the inverse Vening-Meinesz formula, different ranges of residual vertical deviations and different integral radii are used to invert the gravity anomalies off the coast of China and its adjacent areas, respectively, and to compare them with the gravity data of ships selected from the Central Bohai Sea and the northern part of the East China Sea. According to the above procedure, the absolute value of residual perpendicular deviation greater than 3 "is excluded, and with 45 'integral radius, the 2' 脳 2'resolution gravity anomaly in the coastal waters of China and its adjacent areas is determined, and the accuracy is between 3.92 and 4.437mGal compared with the ship gravity data. The overall accuracy is 4.154mGal.
【學位授予單位】：中國石油大學（華東）
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：P228.3

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