文山州CORS系統(tǒng)建設(shè)的理論與實踐
發(fā)布時間：2018-08-26 12:48
【摘要】：GPS定位技術(shù)已經(jīng)從靜態(tài)、快速靜態(tài)發(fā)展到實時動態(tài)精確定位。由多個基準站、數(shù)據(jù)通信系統(tǒng)及數(shù)據(jù)中心組成的CORS系統(tǒng)是集成了計算機技術(shù)、網(wǎng)絡(luò)技術(shù)、現(xiàn)代通信技術(shù)和GPS定位技術(shù)為一體的多功能的服務(wù)平臺,是未來GPS定位技術(shù)發(fā)展的方向。由于CORS建設(shè)模式的影響,在建立的多個CORS系統(tǒng)基礎(chǔ)上,實現(xiàn)統(tǒng)一整網(wǎng)是當(dāng)前和今后一段時間需要解決的主要問題。 文章首先系統(tǒng)的介紹了國內(nèi)外和省內(nèi)CORS系統(tǒng)的發(fā)展的現(xiàn)狀和取得的成果,列舉一些著名的CORS系統(tǒng),提出了WSCORS建設(shè)的可行性和必要性。CORS是建立在GPS定位基礎(chǔ)之上的,對GPS定位技術(shù)的概念和定位原理進行了概括性總結(jié)。介紹了GPS的基本概念和絕對定位、相對定位、差分定位的原理以及GPS各種誤差及處理的方法,提出了CORS系統(tǒng)已成為GPS定位技術(shù)發(fā)展的方向和趨勢。其次依托WSCORS工程的建設(shè),詳細總結(jié)了CORS系統(tǒng)建設(shè)的整個流程以及相關(guān)技術(shù)的集成應(yīng)用技術(shù),WSCORS系統(tǒng)采用基于虛擬站技術(shù)(VRS)的南方NRS軟件及南方CORS設(shè)備,WSCORS系統(tǒng)建成后,功能性測試及指標(biāo)性測試均達到設(shè)計的要求。建立了高精度動態(tài)坐標(biāo)框架,具有良好系統(tǒng)完備性檢測能力,實現(xiàn)了系統(tǒng)實時坐標(biāo)轉(zhuǎn)換和高程轉(zhuǎn)換。 最后,WSCORS和HHCORS控制中心通過通信網(wǎng)絡(luò)及網(wǎng)絡(luò)協(xié)議實現(xiàn)兩個CORS公共基準站的數(shù)據(jù)通信、共享。利用WSCORS整網(wǎng)年積日為65-71天的24個基準站實測數(shù)據(jù)在GAMIT/GLOBK軟件下進行了WSCORS網(wǎng)數(shù)據(jù)處理工作,得到了ITRF97,2000歷元的坐標(biāo)成果；并討論了WSCORS和HHCORS系統(tǒng)的整網(wǎng)以及兩個CORS系統(tǒng)的基準統(tǒng)一問題。在GAMIT基線解算過程中,引入了ITRF框架下IGS跟蹤站BJFS、KUNM、URUM、WUHN、SHAO、LHAZ和中國地殼監(jiān)測網(wǎng)絡(luò)工程跟蹤站XIAG站參與WSCORS的基線解算,利用GLOBK進行網(wǎng)平差,將上述的IGS站作為起算點坐標(biāo),得到WSCORS系統(tǒng)框架網(wǎng)絡(luò)站點在ITRF97,2000歷元下的三維地心坐標(biāo)。由于觀測手段和觀測精度不同,速度場和板塊運動的影響,IGS基準站坐標(biāo)之間有微小的系統(tǒng)變化,CORS基準站之間觀測數(shù)據(jù)也需要歸算到統(tǒng)一的歷元時刻,導(dǎo)致WSCORS和HHCORS的基準存在差異,探討了九參數(shù)坐標(biāo)轉(zhuǎn)換模型法以及在基線解算,平差處理和平差處理后三種實現(xiàn)基準統(tǒng)一的方法。
[Abstract]:GPS positioning technology has developed from static, fast static to real-time dynamic accurate positioning. The CORS system, which consists of several reference stations, data communication systems and data centers, is a multi-functional service platform integrated with computer technology, network technology, modern communication technology and GPS positioning technology. Is the future GPS positioning technology development direction. Because of the influence of CORS construction mode, it is the main problem to solve the problem of realizing unified whole network on the basis of many CORS systems established at present and in the future. Firstly, this paper systematically introduces the development status and achievements of CORS system both at home and abroad and within the province, enumerates some famous CORS systems, and points out the feasibility and necessity of WSCORS construction. Cors is based on GPS positioning. The concept and principle of GPS positioning technology are summarized. This paper introduces the basic concept of GPS, absolute positioning, relative positioning, the principle of differential positioning, and the error and processing methods of GPS, and points out that CORS system has become the direction and trend of the development of GPS positioning technology. Secondly, based on the construction of WSCORS project, the whole process of CORS system construction and the integrated application technology of related technology are summarized in detail. The south NRS software based on virtual station technology (VRS) and the South CORS equipment WSCORS system are adopted. Functional testing and indicator testing meet the requirements of the design. A dynamic coordinate frame with high precision is established, which has the capability of detecting the completeness of the system, and realizes the real-time coordinate transformation and elevation conversion of the system. Finally, WSCORS and HHCORS control center realize the data communication and sharing between the two CORS public reference stations through communication network and network protocol. In this paper, the data processing of WSCORS net is carried out under the GAMIT/GLOBK software using the measured data of 24 datum stations whose annual cycle of WSCORS is 65-71 days, and the coordinate results of ITRF97,2000 epoch are obtained, and the whole network of WSCORS and HHCORS system and the unification of the two CORS systems are discussed. In the process of GAMIT baseline calculation, the IGS tracking station BJFS,KUNM,URUM,WUHN,SHAO,LHAZ and the Chinese crustal monitoring network engineering tracking station XIAG station are introduced into the baseline solution of WSCORS under the framework of ITRF. The network adjustment is carried out by using GLOBK, and the above IGS station is taken as the starting point coordinate. The three-dimensional geocentric coordinates of the WSCORS system frame network site under the ITRF97,2000 epoch are obtained. Because of the difference of observation means and observation precision, the influence of velocity field and plate motion on the IGS datum station coordinate has a slight systematic change. The data between the cors datum station also need to be reduced to a unified epoch time. As a result of the difference between WSCORS and HHCORS, this paper discusses the nine parameter coordinate transformation model method and the three methods to realize the unification of datum after the baseline solution, adjustment treatment and difference processing.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P228.4
本文編號：2204915
[Abstract]:GPS positioning technology has developed from static, fast static to real-time dynamic accurate positioning. The CORS system, which consists of several reference stations, data communication systems and data centers, is a multi-functional service platform integrated with computer technology, network technology, modern communication technology and GPS positioning technology. Is the future GPS positioning technology development direction. Because of the influence of CORS construction mode, it is the main problem to solve the problem of realizing unified whole network on the basis of many CORS systems established at present and in the future. Firstly, this paper systematically introduces the development status and achievements of CORS system both at home and abroad and within the province, enumerates some famous CORS systems, and points out the feasibility and necessity of WSCORS construction. Cors is based on GPS positioning. The concept and principle of GPS positioning technology are summarized. This paper introduces the basic concept of GPS, absolute positioning, relative positioning, the principle of differential positioning, and the error and processing methods of GPS, and points out that CORS system has become the direction and trend of the development of GPS positioning technology. Secondly, based on the construction of WSCORS project, the whole process of CORS system construction and the integrated application technology of related technology are summarized in detail. The south NRS software based on virtual station technology (VRS) and the South CORS equipment WSCORS system are adopted. Functional testing and indicator testing meet the requirements of the design. A dynamic coordinate frame with high precision is established, which has the capability of detecting the completeness of the system, and realizes the real-time coordinate transformation and elevation conversion of the system. Finally, WSCORS and HHCORS control center realize the data communication and sharing between the two CORS public reference stations through communication network and network protocol. In this paper, the data processing of WSCORS net is carried out under the GAMIT/GLOBK software using the measured data of 24 datum stations whose annual cycle of WSCORS is 65-71 days, and the coordinate results of ITRF97,2000 epoch are obtained, and the whole network of WSCORS and HHCORS system and the unification of the two CORS systems are discussed. In the process of GAMIT baseline calculation, the IGS tracking station BJFS,KUNM,URUM,WUHN,SHAO,LHAZ and the Chinese crustal monitoring network engineering tracking station XIAG station are introduced into the baseline solution of WSCORS under the framework of ITRF. The network adjustment is carried out by using GLOBK, and the above IGS station is taken as the starting point coordinate. The three-dimensional geocentric coordinates of the WSCORS system frame network site under the ITRF97,2000 epoch are obtained. Because of the difference of observation means and observation precision, the influence of velocity field and plate motion on the IGS datum station coordinate has a slight systematic change. The data between the cors datum station also need to be reduced to a unified epoch time. As a result of the difference between WSCORS and HHCORS, this paper discusses the nine parameter coordinate transformation model method and the three methods to realize the unification of datum after the baseline solution, adjustment treatment and difference processing.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P228.4
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