On the Accuracy of Localization Systems Using Wideband Antenna Arrays
Accurate positional information is essential for many applications in wireless networks. Time-of-arrival (TOA) and angle-of-arrival (AOA) are the two most commonly used signal metrics for localizing nodes with unknown positions. In this paper, we consider a wireless network in which each node is equ...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers
2011
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| Online Access: | http://hdl.handle.net/1721.1/62202 https://orcid.org/0000-0002-8573-0488 |
| _version_ | 1826216155043332096 |
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| author | Shen, Yuan Win, Moe Z. |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Shen, Yuan Win, Moe Z. |
| author_sort | Shen, Yuan |
| collection | MIT |
| description | Accurate positional information is essential for many applications in wireless networks. Time-of-arrival (TOA) and angle-of-arrival (AOA) are the two most commonly used signal metrics for localizing nodes with unknown positions. In this paper, we consider a wireless network in which each node is equipped with a wideband antenna array capable of performing both TOA and AOA measurements. Since both the position and orientation of the agent are of interest, we propose a localization framework that jointly estimates these two parameters. The notion of equivalent fisher information is applied to derive the squared error bounds for the position and orientation. Since our analysis starts from the received waveforms rather than directly from the signal metrics, these bounds characterize the fundamental limits of the position and orientation accuracy. Surprisingly, our result reveals that AOA measurements obtained by wideband antenna arrays do not further improve position accuracy beyond that provided by TOA measurements. |
| first_indexed | 2024-09-23T16:43:08Z |
| format | Article |
| id | mit-1721.1/62202 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:43:08Z |
| publishDate | 2011 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | mit-1721.1/622022022-10-03T07:46:06Z On the Accuracy of Localization Systems Using Wideband Antenna Arrays Shen, Yuan Win, Moe Z. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Laboratory for Information and Decision Systems Win, Moe Z. Win, Moe Z. Shen, Yuan Accurate positional information is essential for many applications in wireless networks. Time-of-arrival (TOA) and angle-of-arrival (AOA) are the two most commonly used signal metrics for localizing nodes with unknown positions. In this paper, we consider a wireless network in which each node is equipped with a wideband antenna array capable of performing both TOA and AOA measurements. Since both the position and orientation of the agent are of interest, we propose a localization framework that jointly estimates these two parameters. The notion of equivalent fisher information is applied to derive the squared error bounds for the position and orientation. Since our analysis starts from the received waveforms rather than directly from the signal metrics, these bounds characterize the fundamental limits of the position and orientation accuracy. Surprisingly, our result reveals that AOA measurements obtained by wideband antenna arrays do not further improve position accuracy beyond that provided by TOA measurements. National Science Foundation (U.S.) (Grant ECCS-0636519) National Science Foundation (U.S.) (ECCS-0901034) United States. Office of Naval Research (Presidential Early Career Award for Scientists and Engineers (PECASE) N00014-09-1-0435) Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies 2011-04-14T16:03:21Z 2011-04-14T16:03:21Z 2010-01 2008-11 Article http://purl.org/eprint/type/JournalArticle 0090-6778 INSPEC Accession Number: 11087677 http://hdl.handle.net/1721.1/62202 Win, M.Z., with Yuan Shen. “On the Accuracy of Localization Systems Using Wideband Antenna Arrays.” Communications, IEEE Transactions On 58.1 (2010) : 270-280.© 2010 IEEE. https://orcid.org/0000-0002-8573-0488 en_US http://dx.doi.org/10.1109/tcomm.2010.01.080141 IEEE Transactions on Communications Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers IEEE |
| spellingShingle | Shen, Yuan Win, Moe Z. On the Accuracy of Localization Systems Using Wideband Antenna Arrays |
| title | On the Accuracy of Localization Systems Using Wideband Antenna Arrays |
| title_full | On the Accuracy of Localization Systems Using Wideband Antenna Arrays |
| title_fullStr | On the Accuracy of Localization Systems Using Wideband Antenna Arrays |
| title_full_unstemmed | On the Accuracy of Localization Systems Using Wideband Antenna Arrays |
| title_short | On the Accuracy of Localization Systems Using Wideband Antenna Arrays |
| title_sort | on the accuracy of localization systems using wideband antenna arrays |
| url | http://hdl.handle.net/1721.1/62202 https://orcid.org/0000-0002-8573-0488 |
| work_keys_str_mv | AT shenyuan ontheaccuracyoflocalizationsystemsusingwidebandantennaarrays AT winmoez ontheaccuracyoflocalizationsystemsusingwidebandantennaarrays |