本文選題：多基站 + 連續(xù)運行參考站��； 參考：《遼寧工程技術(shù)大學(xué)》2013年碩士論文

【摘要】：目前國際上大地測量發(fā)展的一個主要方向是建立全球覆蓋、全天候、高精度、動態(tài)、實時定位的衛(wèi)星導(dǎo)航系統(tǒng)。因此建立永久性連續(xù)運行的GPS參考站可以為服務(wù)范圍內(nèi)的用戶實時提供衛(wèi)星導(dǎo)航服務(wù)。目前世界上較發(fā)達的國家和地區(qū)都已建立或籌劃建立連續(xù)運行參考站系統(tǒng)，簡稱CORS。為滿足國民經(jīng)濟建設(shè)信息化的需要，采集多種實時地理空間數(shù)據(jù)，國內(nèi)的CORS系統(tǒng)建立迫在眉睫。 本文以連續(xù)運行參考站理論為基礎(chǔ)，以阜新市多基站CORS系統(tǒng)為研究對象，主要研究CORS系統(tǒng)建立過程中參考站選址的影響因素，CORS系統(tǒng)建立后的系統(tǒng)的坐標聯(lián)測與轉(zhuǎn)換及技術(shù)指標測試，結(jié)合CORS技術(shù)在阜新市大冷鄉(xiāng)土地整理中的應(yīng)用，得到以下結(jié)論： 1.為了較好的發(fā)揮阜新CORS系統(tǒng)的性能，經(jīng)過對參考站站址觀測環(huán)境測試，真實評估參考站站址附近的多路徑效應(yīng)、遮擋、是否有干擾信號等狀況。通過對參考站址多路徑分析，參考站址位信噪比分析，參考站址位數(shù)據(jù)完整性分析得出站址滿足建站要求。 2.通過系統(tǒng)技術(shù)指標測試，包括儀器的兼容性、系統(tǒng)時間可用性、系統(tǒng)空間可用性、網(wǎng)絡(luò)RTK初始化時間、RTK定位精度情況等5個方面，均符合技術(shù)指標，從網(wǎng)內(nèi)網(wǎng)外精度對比來看，網(wǎng)內(nèi)精度與網(wǎng)外精度差別不大。這說明整個系統(tǒng)網(wǎng)內(nèi)網(wǎng)外精度分布均勻，可以提供可靠的厘米級RTK定位服務(wù)。網(wǎng)外最遠點距離網(wǎng)邊緣為36.8公里，其內(nèi)外符合精度都在2厘米以內(nèi)，滿足設(shè)計要求，同時說明系統(tǒng)可以滿足網(wǎng)外30公里的作業(yè)需求。整網(wǎng)內(nèi)符合精度，北方向優(yōu)2.8cm，東方向優(yōu)于2.0cm，高程優(yōu)于4.5cm；整網(wǎng)外符合精度，北方向優(yōu)于3.5cm，東方向優(yōu)于2.8cm。滿足系統(tǒng)設(shè)計要求。 3.通過CORS技術(shù)在土地整理中的應(yīng)用，對比CORS技術(shù)下RTK與常規(guī)RTK，得出CORS技術(shù)無需架設(shè)參考站，初始化時間短而穩(wěn)定，且定位精度分布均勻。 4.CORS的建立提供了統(tǒng)一的、高精度的、實時動態(tài)的三維空間定位基準，實現(xiàn)單人單機作業(yè)，大幅度提高了生產(chǎn)效率，滿足不同行業(yè)、不同用途、不同服務(wù)方式和不同精度層次的導(dǎo)航定位需求。
[Abstract]:At present, one of the main directions of geodetic development in the world is to establish a global coverage, all-weather, high-precision, dynamic, real-time positioning satellite navigation system. Therefore, the establishment of a permanent and continuous GPS reference station can provide real-time satellite navigation services for users within the scope of service. At present, more developed countries and regions in the world have established or planned to set up continuous operation reference station system, referred to as Cors. In order to meet the needs of national economic construction information, collecting a variety of real-time geospatial data, the establishment of domestic cors system is urgent. Based on the theory of continuous operation reference station, this paper takes the multi-base station cors system in Fuxin as the research object. This paper mainly studies the factors influencing the location of reference station in the process of establishing the cors system. After the establishment of the cors system, the coordinate joint measurement and conversion of the system and the test of the technical indexes are studied. The application of the cors technology in the land consolidation of Daling Township in Fuxin City is also studied. The conclusions are as follows: 1. In order to give full play to the performance of the cors system in Fuxin, the multipath effect, occlusion and interference signal around the reference station site are evaluated by the environmental test of reference station site. Through the multipath analysis of reference site, the analysis of SNR of reference site, and the analysis of data integrity of reference site, it is concluded that the site meets the requirements of station construction. 2. Through the system technical index test, including the compatibility of the instrument, the system time availability, the system space availability, the network RTK initialization time and the RTK positioning accuracy, all accord with the technical index. There is little difference between the precision inside and outside the net. This shows that the precision distribution of the whole system is uniform and can provide reliable RTK positioning service. The farthest point outside the network is 36.8 kilometers away from the edge of the network, and the accuracy of both inside and outside the network is less than 2 centimeters, which meets the design requirements. At the same time, it shows that the system can meet the operational requirements of 30 kilometers out of the network. The accuracy of the whole network is 2.8 cm in the north direction, 2.0 cm in the east direction and 4.5 cm in the elevation, and the accuracy is better than 3.5 cm in the north direction and 2.8 cm in the east direction. Meet system design requirements. 3. Through the application of cors technology in land consolidation, compared with conventional RTK, it is concluded that the cors technology does not need to set up reference stations, the initialization time is short, the initialization time is stable, and the positioning accuracy distribution is uniform. 4. High-precision, real-time and dynamic three-dimensional positioning datum can realize single machine operation, which greatly improves production efficiency and meets the needs of navigation and positioning in different industries, different uses, different service modes and different precision levels.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P273;P228.4

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