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2010 Second International Conference on Networks Security, Wireless Communications and Trusted Computing
Geometry Influence on GDOP in TOA and AOA Positioning Systems
Wuhan, Hubei, China
April 24-April 25
ISBN: 978-0-7695-4011-5
| ASCII Text | x | ||
| Xiwu Lv, Kaihua Liu, Po Hu, "Geometry Influence on GDOP in TOA and AOA Positioning Systems," Networks Security, Wireless Communications and Trusted Computing, International Conference on, vol. 2, pp. 58-61, 2010 Second International Conference on Networks Security, Wireless Communications and Trusted Computing, 2010. | |||
| BibTex | x | ||
| @article{ 10.1109/NSWCTC.2010.150, author = {Xiwu Lv and Kaihua Liu and Po Hu}, title = {Geometry Influence on GDOP in TOA and AOA Positioning Systems}, journal ={Networks Security, Wireless Communications and Trusted Computing, International Conference on}, volume = {2}, year = {2010}, isbn = {978-0-7695-4011-5}, pages = {58-61}, doi = {http://doi.ieeecomputersociety.org/10.1109/NSWCTC.2010.150}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, } | |||
| RefWorks Procite/RefMan/Endnote | x | ||
| TY - CONF JO - Networks Security, Wireless Communications and Trusted Computing, International Conference on TI - Geometry Influence on GDOP in TOA and AOA Positioning Systems SN - 978-0-7695-4011-5 SP58 EP61 A1 - Xiwu Lv, A1 - Kaihua Liu, A1 - Po Hu, PY - 2010 KW - TOA KW - AOA KW - GDOP KW - Geometry influence KW - Cramer-Rao bound VL - 2 JA - Networks Security, Wireless Communications and Trusted Computing, International Conference on ER - | |||
Geometric dilution of precision (GDOP) is defined as the ratio of the root-mean-square position determination error to the root-mean-square measurement error. Based on the Cramer-Rao lower bound (CRLB), new mathematical expressions of GDOP are presented in Time-of-Arrival (TOA) and Angle-of-Arrival (AOA) positioning systems in this paper. The expressions obviously reveal that the geometrical shape of the anchor nodes make a significant influence on GDOP. Then the influence of adding a new anchor node at different locations is analyzed. Simulations show that in both positioning systems, two optimal placement angles exist to make the GDOP smallest, when the original anchor nodes are no uniformly scattered. However, when uniformly scattered, the GDOP keeps constant no matter what angle the new anchor node is placed at. In AOA positioning systems, the GDOP is also affected by the distance between the newly added anchor node and the target, and increases when the distance increases. Meanwhile, the GDOP is always reduced when more anchor nodes are used.
Index Terms:
TOA, AOA, GDOP, Geometry influence, Cramer-Rao bound
Citation:
Xiwu Lv, Kaihua Liu, Po Hu, "Geometry Influence on GDOP in TOA and AOA Positioning Systems," nswctc, vol. 2, pp.58-61, 2010 Second International Conference on Networks Security, Wireless Communications and Trusted Computing, 2010
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