AI SearchMobile location estimation with Non-Line-of-Sight mitigation using Kalman filtering (Record no. 77291)
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| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818155435.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 030926s2002 th u m rtt 00| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11900386 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.TC-02-22 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Le Bao Long |
| 245 10 - TITLE STATEMENT | |
| Title | Mobile location estimation with Non-Line-of-Sight mitigation using Kalman filtering |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2002 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 68 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. TC-02-22 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Engineering and Technology |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 2002 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Mobile location estimation has attracted much interest over the past few years due to its potential for new wireless applications and network performance improvement. While the most promising technique for mobile location using cellular mobile networks may be Time Different of Arrival (TDOA) method, the major challenged problems which inhibit accurate mobile location estimation are multipath and non line of sight (NLOS) problems. These problems make the estimated range biased from the true range and finally lead to big errors in mobile location estimates. Range data due to NLOS Base Stations (BS) can be simply ignored but the number of available BSs may not always be enough and range data from as many BSs as possible should be used to overcome large location estimation errors due to undesirable geometric BS layout. In this thesis, techniques for LOSINLOS detection on a sample per sample basis, which are called Real Time Mode and Delayed Mode are proposed and suitable range processing approaches using Kalman filtering are also devised to smooth range data depending on the LOSINLOS detection result. The proposed techniques for LOSINLOS recognition and range processing have the advantage that an acceptable delay is used while other previously proposed techniques using the time historic information of range data required much delay, which would be unfavorable for real time location applications. The famous Chan's algorithm is employed to estimate the mobile location using the processed range data. A further Kalman filter, which was previously proposed by another author is used to smooth the obtained mobile trajectory. The proposed range processing technique in a mobile location architecture is tested by running simulations for different mobile trajectory types under the influence of exponentially distributed and uniformly distributed NLOS noise. The obtained location estimation performance was shown to well satisfy the 67% and 95% error requirements set by US Federal Communications Commission (FCC) in 1999 for straight and zigzag trajectory kinds. For challenged long trajectory, the location mandates were only violated in completely NLOS or nearly NLOS wireless environments. The Delayed Mode was also shown to work little better than Real Time Mode in these tough environments. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Kalman filtering |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Mobile communication systems |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ahmed, Kazi Mohiuddin, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Erke, Tapio J., |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Fernando, W.A.C., |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Keihin Electric Express Railway Company Limited (KEIKYU), |
| 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. TC-02-22 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B07584">http://203.159.5.9/ait-thesis/detail.php?q=B07584</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11900386 |
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| a | 240703 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 030926 |
| First date, FD (RLIN) | m |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 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 : 30050120809172 |
| CREATED | CREATED : 2002-04-29 |
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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.TC-02-22 | 30050120809172 | 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.TC-02-22 | 30050120809180 | 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.TC-02-22 | 30050160044888 | 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 | 50.00 | AIT Thesis no.TC-02-22 | 30050211033385 | 18/08/2026 | 3 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | 50.00 | AIT Thesis no.TC-02-22 | 30050211032304 | 18/08/2026 | 4 | 18/08/2026 | 20-AIT Publication |