AI SearchImproving real-time PPP positioning by combining QZSS-LEX message and IGS ultra-rapid products (Record no. 58894)
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| fixed length control field | 03872nam a2200457 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818134633.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 140618s2012 th ad ||| |000 0 eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12133152 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.RS-12-16 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Wickramasinghe, Chathura Hasanka |
| 245 10 - TITLE STATEMENT | |
| Title | Improving real-time PPP positioning by combining QZSS-LEX message and IGS ultra-rapid products |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2012 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 65 leaves : |
| Other physical details | ill., charts + |
| Accompanying material | 1 online resource |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. RS-12-16 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Science |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Asian Institute of Technology, 2012 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Global Positioning System (GPS) has become a day to day tool with multiple applications. Errors associated with GPS observations makeit impossible to use a single receiver for geodetic, geodynamic and vehicle automation applications requiring centimeter or millimeter level accuracy. Real Time Precise Point Positioning (RT PPP) has become a powerful tool that can provide positioning accuracy comparable to the network solution(Ge et al. 2007)without the need of GPS base station network. International GNSS service (IGS) has been providing data necessary for PPP via internet in real time. Quasi-Zenith Satellite System (QZSS) is a Japanese GPS augmentation system that provides real time PPP correction through an experimental signal (LEX) from June 2011. LEX signal provides real time GPS satellite ephemeris and clock correction. The accuracy of these corrections will directly affect the positioning accuracy(Zumberge et al. 1997). This paper compared the LEX PPP data with the IGS Ultra rapid data products to analyze the accuracy of LEX data. The analysis showed LEX data has systematic errors that can be corrected. A new algorithm was developed to correct clock error and ephemeris errors using a liner model and wavelet transformation. This method improved LEX ephemeris accuracy to decimeter level and the clock correction accuracy to 0.01 microseconds. As a result LEX based real time positioning accuracy was improved by 37%. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Global Positioning System |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Geographical positions |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Lal Samarakoon, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Taravudh Tipdecho, |
| Relator term | Examination committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Manukid Parnichkun, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Geoinformatics Center, Asian Institute of Technology, |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. RS-12-16 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B03879 ">http://203.159.5.9/ait-thesis/detail.php?q=B03879 </a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12133152 |
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| a | 241106 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 140618 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | j |
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| 962 ## - | |
| -- | 000:001:PDF:b1213315:001694:0:0:0:0:0:0 |
| -- | Abstract--AIT Thesis no.RS-12-16 |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120588677 |
| CREATED | CREATED : 2014-06-18 |
| RECORD Id | RECORD # : i12812420 |
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| Barcode | Barcode : 30050120588651 |
| CREATED | CREATED : 2014-06-18 |
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| Barcode | Barcode : 30050120222145 |
| CREATED | CREATED : 2016-03-31 |
| RECORD Id | RECORD # : i1291583x |
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| Barcode | Barcode : 30050120993489 |
| CREATED | CREATED : 2020-02-13 |
| RECORD Id | RECORD # : i1325991x |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.RS-12-16 | 30050120588677 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.RS-12-16 | 30050120588651 | 18/08/2026 | 2 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.RS-12-16 | 30050120222145 | 18/08/2026 | 18/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.RS-12-16 | 30050120993489 | 18/08/2026 | 3 | 18/08/2026 | 20-AIT Publication |