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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 王立昇(Li-Sheng Wang) | |
| dc.contributor.author | Wen-Yao Chang | en |
| dc.contributor.author | 張文耀 | zh_TW |
| dc.date.accessioned | 2021-06-17T08:37:16Z | - |
| dc.date.available | 2019-08-15 | |
| dc.date.copyright | 2019-08-15 | |
| dc.date.issued | 2019 | |
| dc.date.submitted | 2019-08-08 | |
| dc.identifier.citation | [1] 宋家瑋,'整合GPS/BDS雙星系統之單頻精密單點定位研究',台灣大學應用力學研究所碩士學位論文2015.
[2] Jeffry Ross, Avram Tetewsky, 'Accuracy Evaluation of GPS Broadcast Inter-signal Correction (ISC) Parameters and Their Impacts on GPS Standard Positioning' InsideGNSS. pages 37-48, August 2009. [3] Yulong Ge , Feng Zhou , Baoqi Sun 'The Impact of Satellite Time Group Delay and Inter-Frequency Differential Code Bias Corrections on Multi-GNSS Combined Positioning'Sensors, 2017, 17, 602 [4] IS-GPS-200J [5] Anton Beitler, Andreas Tollkuhn 'CMCD: Multipath Detection for Mobile GNSS Receivers' . In Proceedings of the 2015 International Technical Meeting of the Institute of Navigation, Dana Point, CA, USA,26–28 January 2015; pp. 455–464. [6] SINEX BIAS—Solution(Software/technique) INdependent EXchange Format for GNSS Biases Version 1.00 [7] Hyung Keun Lee,'GPS Multipath Detection Based on Sequence of Successive-Time Double-Differences' IEEE Signal Proc. Let. 2004, 11, 316–319 [8] Rinex3.03 [9] WANG Ningbo, YUAN Yunbin, ZHANG Baocheng, LI Zishen,' Accuracy Evaluation of GPS Broadcast Inter-signal Correction (ISC) Parameters and Their Impacts on GPS Standard Positioning' Acta Geodaetica et Cartographica Sinica, 2016, 45(8): 919–928. [10] N. Beck, Guide to GPS positioning. Larry d Hothem, 1986. [11] H.-W. Bernhard, L. Herbert, and W. Elmar, 'GNSS–global navigation satellite systems: GPS, GLONASS, Galileo, and more,' ed: Springer-Verlag Wien: NewYork, NY, USA, 2008. [12] E. Kaplan and C. Hegarty, Understanding GPS: principles and applications. Artech house, 2005. [13] K. Chen, Real-time precise point positioning, timing and atmospheric sensing. 2005 [14] P. Misra and P. Enge, Global Positioning System: Signals, Measurements and Performance Second Edition. Lincoln, MA: Ganga-Jamuna Press, 2006. [15] J. F. Zumberge, M. B. Heflin, D. C. Jefferson, M. M. Watkins, and F. H. Webb, 'Precise point positioning for the efficient and robust analysis of GPS data from large networks,' Journal of Geophysical Research: Solid Earth, vol. 102, no. B3, pp. 5005-5017, 1997. [16] I. Martin, GNSS Precise Point Positioning. School of Civil Engineering and Geosciences Newcastle University, 2013. [17] J. Kouba, 'A guide to using International GNSS Service (IGS) products,' ed, 2009. [18] G. Xu and Dr.-Ing., GPS Theory, Algorithms and Applications, 2 ed. springer, 2007 [19] A. Niell, 'Global mapping functions for the atmosphere delay at radio wavelengths,' Journal of Geophysical Research: Solid Earth, vol. 101, no. B2, pp. 3227-3246, 1996. [20] R. Leandro, M. Santos, and R. B. Langley, 'UNB neutral atmosphere models: development and performance,' in Proceedings of ION NTM, 2006, vol. 52, no. 1, pp. 564-73. [21] R. Wienia, 'Use of global ionospheric maps for precise point positioning: Developing an optimised procedure in using Global Ionospheric Maps for single-frequency standalone positioning with GPS,' TU Delft, Delft University of Technology, 2008. [22] Cai, C.,Pan, L.,&Gao,Y.(2014).A Precise Weighting Approach with Application to Combined L1/B1 GPS/Beidou Positioning.Journal of Navigation,67(05),911-925. [23] Li,J.,&Wi,M(2009,September).The improvement of positioning accuracy with weighted least square based on SNR.In Wireless Communication, Networking and Mobile Computing, 2009.WiCom'09.5th International Conference on (pp.1-4).IEEE [24] China Satellite Navigation Office,”Applications of the BeiDou Navigation Satellite System” [25] S.Schaer, W. Gurtner, and J. Feltens, “IONEX:The ionosphere map exchange formatwersion 1, “1998. [26] H. Hopfield, 'Two‐quartic tropospheric refractivity profile for correcting satellite data,' Journal of Geophysical research, vol. 74, no. 18, pp. 4487-4499, 1969. [27] J. Saastamoinen, 'Atmospheric correction for the troposphere and stratosphere in radio ranging satellites,' The use of artificial satellites for geodesy, pp. 247-251, 1972. [28] J. P. Collins and R. B. Langley, A tropospheric delay model for the user of the wide area augmentation system.1996. [29] Ashby, N. Relativity in the global positioning system. Living Rev. Relativity 6, 1 2003. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/74464 | - |
| dc.description.abstract | 隨著科技的進步，對於導航定位的精準度要求越來越高，因此利用GNSS定位時需要更加精確穩定的誤差參數，因此本研究使用單頻精密定位系統以及統整全球定位系統(Global Positioning System, GPS)與北斗衛星導航系統(Beidou Satellite Navigation System, BDS)，並希望能提高即時定位的精度。
在定位觀測量誤差方面，本研究使用IGS提供的Ultra-Rapid精密星曆修正GPS衛星軌道的計算；衛星鐘差部分則使用廣播星曆與中國科學院所提供的資料進行計算；電離層誤差部分使用IGS所提供的全球電離層地圖，而對流層部分則是使用UNB3m的模型，兩者皆透過內插的方式來進行修正。本研究特別針對衛星訊號在衛星內部傳遞的過程中所產生的硬件延遲進行分析，並利用中國科學院在IGS中上傳的訊號間偏差來進行實驗。 另外多路徑效應對於定位的影響一直是值得探討的問題，對於現在高樓大廈遍布的都市環境當中，多路徑效應成為衛星定位誤差的重要原因之一，本研究處理多路徑效應誤差分成兩個步驟，一為多路徑的偵測，一為多路徑的移除，其中前者是以CMCD(Code minus Carrier Difference)的方式，利用不同觀測量對於多路徑效應的不同特性，來做為多路徑的檢測方法；後者使用約束最小平方法，並與接收機位置和鐘差進行解算，以降低多路徑效應的影響，模擬結果顯示，本研究提出的方法是有效的。 | zh_TW |
| dc.description.abstract | With the advancement of technology, the need of accuracy on GNSS positioning has been getting higher and higher, The parameters of error model in the GNSS measurements are therefore required to be more accurate and stable. This study uses global positioning system (Global Positioning System, GPS) and the Beidou Satellite Navigation System (BDS) to design single-frequency precise positioning system and, to achieve the purpose of more accurate real-time positioning.
To deal with the measurement errors, this study uses the Ultra-Rapid precise ephemeris provided by IGS to correct the calculation of GPS satellite orbits; and uses the information of broadcast ephemeris and Chinese Academy of Sciences, CAS, to correct satellite clock bias. The ionospheric error is corrected by the global ionosphere map provide by IGS, while the troposphere part is treated by the UNB3m model, both of which are modified by interpolation. Moreover, the hardware delay errors generated during the signal transmission inside satellites are discussed; and the inter-signal bias uploaded by the CAS in IGS is used to compensate that error. On the other hand, the influence of multipath effect on positioning has always been a worthy problem for discussion. In the urban environment where tall buildings are around, multipath effect may become one of the reasons for satellite positioning error. Therefore, an algorithm reduce the multipath effect is proposed in this study. Includes two steps-First step: multipath detection; Second step: multipath removal. The first step is based on CMCD (Code minus Carrier Difference), using different characteristics of different observations of pseudorange and carrier phase, for multipath detection.. After multipath effect being detected, The constraint least squares method is then applied to reduce the multipath effect. Simulation results show that the proposed algorithm is effective. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-17T08:37:16Z (GMT). No. of bitstreams: 1 ntu-108-R06543008-1.pdf: 3571374 bytes, checksum: 0b8a6694ed4bb5e4d54edb5506d70038 (MD5) Previous issue date: 2019 | en |
| dc.description.tableofcontents | 誌謝 0
中文摘要 1 Abstract 2 目錄 4 圖目錄 6 表目錄 9 第一章 緒論 11 1.1 前言 11 1.2 文獻回顧 11 1.3 研究方法簡介與成果 12 1.4 論文架構 12 第二章 全球衛星導航系統 13 2.1 GPS定位系統[10-12] 13 2.2 BDS定位系統[8,24] 16 2.3 GNSS觀測量[11,14] 17 2.3.1虛擬距離觀測量 17 2.3.2載波相位觀測量 19 第三章 觀測量誤差分析 20 3.1 衛星相關誤差[11, 13, 16, 17] 20 3.1.1 衛星軌道誤差 20 3.1.2 衛星鐘差[2,3,9] 21 3.1.3 相對論效應誤差[11] 25 3.2 訊號傳遞誤差[11,13,18-21] 26 3.2.1 電離層誤差 26 3.2.2 對流層誤差 29 3.2.3 地球自轉修正 30 3.2.4 多路徑效應 31 3.3 接收機相關誤差[11, 13] 32 第四章 定位演算法設計 33 4.1精密單點定位原理[15] 33 4.2定位模型 34 4.3加權最小平方法[1] 37 4.4 Helmert方差估計[1,22,23] 38 4.5 CMCD多路徑檢測法[5,7] 39 4.6定位流程 42 第五章 實驗與結果分析 43 5.1 靜態實驗一 43 5.2 靜態實驗二 76 第六章 總結與未來工作 82 參考文獻 83 | |
| dc.language.iso | zh-TW | |
| dc.subject | 全球衛星定位系統 | zh_TW |
| dc.subject | CMCD | zh_TW |
| dc.subject | 約束最小平方法 | zh_TW |
| dc.subject | 單頻精密定位 | zh_TW |
| dc.subject | precise point positioning | en |
| dc.subject | GNSS | en |
| dc.subject | CMCD | en |
| dc.subject | constraint least square | en |
| dc.title | GNSS定位系統硬件延遲及多路徑效應之分析與處理 | zh_TW |
| dc.title | The Analysis and Processing of Hardware Delay and Multipath Effect on GNSS Positioning System | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 107-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.coadvisor | 王和盛(He-Sheng Wang) | |
| dc.contributor.oralexamcommittee | 張帆人(Fan-ren Chang),卓大靖(Dah-Jing Jwo) | |
| dc.subject.keyword | 單頻精密定位,全球衛星定位系統,CMCD,約束最小平方法, | zh_TW |
| dc.subject.keyword | precise point positioning,GNSS,CMCD,constraint least square, | en |
| dc.relation.page | 85 | |
| dc.identifier.doi | 10.6342/NTU201902706 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2019-08-10 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 應用力學研究所 | zh_TW |
| 顯示於系所單位： | 應用力學研究所 | |
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