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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 曹恆偉 | |
| dc.contributor.author | Yi-Cheng Huang | en |
| dc.contributor.author | 黃議徵 | zh_TW |
| dc.date.accessioned | 2021-06-15T03:00:51Z | - |
| dc.date.available | 2012-08-04 | |
| dc.date.copyright | 2009-08-04 | |
| dc.date.issued | 2009 | |
| dc.date.submitted | 2009-07-30 | |
| dc.identifier.citation | [1] Michael S.Braasch and A.J. Van Dierendonck, “GPS Receiver Architectures and Measurements”, Proceeding of the IEEE, vol. 87, no.1, pp.48-64, Jan 1999
[2] Alan V.Oppenheim, Ronald W. Schafer, John R. Buck,”Discrete-Time Signal Processing,Second Edition”,PRENTICE HALL,1999,CH5 [3] Simon Haykin,”Adaptive Filter Theory,4th Edition”,PRENTICE HALL,2001 [4] G. Dimos, T. Upadhyay, T. Jenkins,“Low-cost solution to narrowband GPS interference problem, ” Aerospace and Electronics Conference, 1995. NAECON 1995, Proceedings of the IEEE, Vol. 1, pp. 145-153, May 1995 [5] L.B. Milstein,“Interference rejection techniques in spread spectrum communications”, Proceeding of the IEEE, Vol.76, pp.657-671,June 1988 [6] R. Rifkin and J. J. Vaccaro, ”Comparison of narrowband adaptive filter technologies for GPS”, IEEE conference, pp.125-131. 2000 [7] R. J. Landry, V. Calmettes, and M. Bousquet, 'Impact of interference on a generic GPS receiver and assessment of mitigation techniques,' in Proceedings of the 5th IEEE International Symposium on Spread Spectrum Techniques and Applications (ISSSTA '98), vol. 1, pp. 87-91, Sun City, South Africa, September 1998 [8] R. Vijayan and H. V. Poor, “Nonlinear techniques for interference suppression in spread spectrum systems, “ IEEE Trans. Commun., vol.38, no.7, pp.1060-1065, July 1990 [9] 毛偉龍.”Design of Smart GPS Receivers in Narrowband Interference and Kinematic Environments”, 台大電機所博士論文,2003 [10] E. D. Kaplan, “Understanding GPS: Principles and Applications”, Artect House Publishers, Second Edition,2006 [11] James Bao-yen Tsui, ”Fundamentals of Global Positioning System Receivers : A software approach”, Second Edition, WIELY, INTER-SCIENCE,2005 [12] S. Nishimura, A. Mvuma, and T. Hinamoto, “Performance improvement of DSSS communication systems using an adaptive IIR notch filter”, in 2001 Proc. IEEE Int. Symp. Circuits and Syst., vol. II, pp. 813-816 ,Australia, May 2001 [13] Paulo S. R. Diniz, “Adaptive Filtering : Algorithm and Practical Implementation,Second Edition”Kluwer Academic Publishers,2002,CH 9 [14] P. A. Regalia,“Adaptive IIR Filtering in Signal Processing and Control”, Marcel Dekker, New York, 1995 , CH10 [15] A. Mvuma, S. Nishimura, and T. Hinamoto, 'Adaptive IIR notch filter with controlled bandwidth for narrow-band interference suppression in DS CDMA system,' in Proceedings of IEEE International Symposium on Circuits and Systems (ISCAS '03), vol. 4, pp. IV-361-IV-364, Bangkok, Thailand, May 2003 [16] W. J. Ma, W. L. Mao, F. R. Chang, 'Design of Adaptive All-Pass Based Notch Filter for Narrowband Anti-Jamming GPS System', Proceedings of 2005 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2005), pp. 305-308, Hong Kong, China, Dec. 2005 [17] Borio .D, Camoriano .L, Lo Presti .L, “Two-Pole and Multi-Pole Notch Filters: a Computationally Effective Solution for Interference Detection and Mitigation”,IEEE System Journal, Vol.2, No. 1,pp.38-47,March 2008 [18] Bradford W. Parkinson, James L. Spilker Jr.,”Global Positioning System:Theory and Applications Volume I”,progress in Astronautics and Aeronautics,1996,CH20 [19] F. Bastide, D. Akos, C. Macabiau, B. Roturier, 'Automatic Gain Control (AGC) as an Interference Assessment Tool,' ION GPS/GNSS 2003, pp. 2042-2053, Portland, OR, September 2003 [20] 李冠儀,” Design of Automatic Gain Control Circuits for GPS Receiver”,台大電機所碩士論文,2005 [21] 趙和慶,”Analog Front End Architecture Analysis and Design for GPS/Galileo Receiver”,台大電信所碩士論文,2007 [22] Borre, K., D. Akos, D. Bertelsen, P. Rinder and S. Jensen, “A Software-Defined GPS and Galileo Receiver – A Single Frequency Approach”, Birkhauser,2007 [23] 劉東鋐,”Design and Analysis of Carrier and Code Synchronization for GNSS Receiver”,台大電信所碩士論文,2008 [24] P. Capozza, B. Holland, T. Hopkinson, C. Moulin, P. Pacheco, R. Rifkin, “Measured Effects of a Narrowband Interference Suppressor on GPS Receivers”, ION 55th Annual Meeting, June 1999, pp.645~651. [25] P. T. Capozza, B. J. Holland, T. M. Hopkinson, and R. L. Landrau, “A single-chip narrow-band frequency-domain excisor for a Global Positioning System (GPS) receiver”, IEEE J. Solid-State circuits, vol.35, pp. 401-411, Mar. 2000 | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/44491 | - |
| dc.description.abstract | 全球導航衛星系統(GNSS)在現今已普遍的使用在各個領域，如車用導航、航海的定位上…等，而手機也愈來愈強調具有定位功能。其中，又以美國的GPS衛星系統最為大家熟知及使用。
GPS為展頻系統，其最大優點便是對干擾具有較佳的抵抗力，但若干擾能量太強大，GPS還是沒辦法正常操作，也因此我們需要額外的抗干擾技術來解決干擾問題。傳統上，最常見的方法是從時間維度(FIR Filter)和頻率維度(FFT)來解決這類問題，但這些架構的成本太高，因此我們需要在系統效能可接受的條件下，採用另外的方法來處理干擾問題。 本論文採用一可適性IIR陷波濾波器(IIR Notch Filter)來消除窄頻干擾。我們利用一低複雜度的演算法來預測干擾頻率，並提出一演算法搭配前端AGC來預測干擾訊號的能量大小。此外，還提出一演算法來偵測干擾訊號的存在，以便干擾不存在時，進入後端的GPS訊號能量不會被陷波濾波器所衰減。更進一步，我們分析了陷波濾波器的群延遲效應(group delay)在信號擷取及追蹤部分的影響，並將干擾訊號由單頻(single-tone)推廣到多頻(multi-tone)，分析多級IIR陷波濾波器在信號擷取與追蹤部分的影響。 此外，我們定點分析IIR陷波濾波器架構、可適性演算法及所提出的預測干擾能量、偵測干擾存在演算法，並在定點設計下驗證所提出演算法的效能。 | zh_TW |
| dc.description.abstract | Nowadays GNSS (Global Navigation Satellite System) has been widely used in many places, for example, In-Car Navigation System, navigation on the sea, and so forth. Especially, there are more and more mobile phones that have navigation capability. And among all the navigation systems, GPS is the most widely used and well-known to people.
GPS is the spread spectrum system and it has an advantage to resist the interference and jamming. But once the jamming power is too large, GPS still cannot work well. So, we must have anti-jamming techniques to overcome this problem. Traditionally, we usually deal with the interference or jamming from the time domain (FIR Filter) or frequency domain (FFT), but both the complexities are too high. So we try to find a low-complexity solution as long as the performance of the system is acceptable. In this thesis, we utilize an adaptive IIR notch filter to eliminate the narrowband interference. We use a simple algorithm to adaptively estimate the jamming frequency, and propose a method to estimate the jamming power. Furthermore, we propose a method to detect the jamming existence so that GPS signal will not attenuate by the notch filter once there is no jamming. We also analyze the group delay effect in the acquisition and tracking, and see the results caused by the multi-pole notch filter. Besides, we re-evaluated the proposed algorithms by using fixed-point analysis of IIR notch filter and adaptive algorithm. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T03:00:51Z (GMT). No. of bitstreams: 1 ntu-98-R96942089-1.pdf: 2250388 bytes, checksum: 66299678008ddf364beb4819e0fa0e85 (MD5) Previous issue date: 2009 | en |
| dc.description.tableofcontents | 摘要..................................................... I
Abstract............................................... III 目錄..................................................... V 圖目錄................................................ VIII 表目錄................................................. XII 第一章 緒論............................................1 1.1 研究背景.............................................1 1.2 研究動機.............................................1 1.3 論文架構.............................................4 第二章 GPS衛星信號特性及接收機構.......................5 2.1 GPS衛星信號特性......................................5 2.1.1 GPS調變方式及信號特性..............................5 2.1.2 C/A碼產生器........................................6 2.2 GPS訊號強度..........................................7 2.3 GPS接收機架構........................................9 2.3.1 自動增益控制器(AGC)...............................10 2.3.2 類比數位轉換器(ADC)...............................10 2.3.3 信號擷取(Acquisition)與追蹤(Tracking).............10 2.3.4 抗干擾架構(Anti-jamming Structure)................10 第三章 IIR陷波濾波器及可適性演法......................13 3.1 二階IIR陷波濾波器簡介...............................13 3.1.1 二階IIR陷波濾波器架構.............................13 3.1.2 二階IIR陷波濾波器的目標函數(Cost Function)........15 3.2 可適性演算法........................................19 3.3 穩定性..............................................19 3.4 提出的預測干擾能量演算法............................21 3.5 提出的偵測干擾存在演算法............................25 3.5.1 SINR定義..........................................25 3.5.2 偵測干擾存在演算法................................26 3.6 多級IIR陷波濾波器...................................28 3.6.1 多級IIR陷波濾波器架構.............................29 3.6.2 預測干擾能量演算法應用於多級IIR陷波濾波器.........29 3.6.3 偵測干擾存在演算法應用於多級IIR陷波濾波器.........32 3.7 定點設計及分析......................................36 3.7.1 IIR定點設計及分析.................................36 3.7.2 可適性演算法定點分析..............................38 3.7.3 定點設計下的預測干擾能量演算法....................40 3.7.4 定點設計下的偵測干擾存在演算法....................42 3.8 不同干擾能量下的SINR改善量..........................44 3.9 複雜度比較..........................................45 第四章 自動增益控制器架構及演法........................47 4.1 簡介................................................47 4.2 所採用的自動增益控制器架構..........................48 4.3 自動增益控制器演算法................................49 4.4 模擬結果............................................53 第五章 IIR陷波濾波器對擷取、追蹤信號的影響及分析......63 5.1 系統架構............................................63 5.2 二階IIR陷波濾波器對信號擷取的影響及分析.............64 5.3 二階IIR陷波濾波器對信號追蹤的影響及分析.............65 5.3.1 碼相位追蹤的影響及分析............................65 5.3.1.1 碼相位追蹤架構圖................................65 5.3.1.2 非常數群延遲效應................................69 5.3.1.3 頻寬α的選擇對信號追蹤的影響.....................71 5.3.2 載波追蹤的影響及分析..............................76 5.3.2.1 載波追蹤迴路架構圖..............................76 5.3.2.2 非常數群延遲對載波頻率追蹤的影響................78 5.3.2.3 非常數群延遲對載波相位追蹤的影響................79 5.4 多級IIR陷波濾波器對擷取信號的影響及分析.............81 5.5 多級IIR陷波濾波器對追蹤信號的影響及分析.............83 5.5.1 碼相位追蹤的影響及分析............................83 5.5.2 載波追蹤的影響及分析..............................87 5.5.2.1 載波頻率追蹤的影響及分析........................87 5.5.2.2 載波相位追蹤的影響及分析........................88 第六章 結論與未來望...................................91 6.1 結論................................................91 6.2 未來展望............................................92 參考文獻.................................................93 | |
| dc.language.iso | zh-TW | |
| dc.subject | 信號追蹤 | zh_TW |
| dc.subject | 全球導航衛星系統 | zh_TW |
| dc.subject | 陷波濾波器 | zh_TW |
| dc.subject | 群延遲 | zh_TW |
| dc.subject | 自動增益控制器 | zh_TW |
| dc.subject | 信號擷取 | zh_TW |
| dc.subject | all-pass based IIR notch filter | en |
| dc.subject | GNSS | en |
| dc.subject | tracking | en |
| dc.subject | acquisition | en |
| dc.subject | group delay | en |
| dc.subject | AGC | en |
| dc.title | 適用於衛星導航接收機窄頻干擾消除之低複雜度訊號處理架構 | zh_TW |
| dc.title | Low-complexity Solution to GPS Narrowband Interference Cancellation | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 97-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 張帆人,毛偉龍,陳坤佐 | |
| dc.subject.keyword | 全球導航衛星系統,陷波濾波器,群延遲,信號擷取,信號追蹤,自動增益控制器, | zh_TW |
| dc.subject.keyword | GNSS,all-pass based IIR notch filter,group delay,acquisition,tracking,AGC, | en |
| dc.relation.page | 96 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2009-07-31 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
| 顯示於系所單位： | 電信工程學研究所 | |
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