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International Journal of Antennas and Propagation
Volume 2016, Article ID 3293418, 11 pages
Research Article

Geolocation of a Known Altitude Target Using TDOA and GROA in the Presence of Receiver Location Uncertainty

1Zhengzhou Institute of Information Science and Technology, Zhengzhou, Henan 450002, China
2National Key Laboratory of Science and Technology on Blind Signal Processing, Chengdu, Sichuan 610041, China
3School of Internet of Things (IoT) Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China

Received 2 June 2016; Accepted 17 August 2016

Academic Editor: Sotirios K. Goudos

Copyright © 2016 Bing Deng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper considers the problem of geolocating a target on the Earth surface using the target signal time difference of arrival (TDOA) and gain ratio of arrival (GROA) measurements when the receiver positions are subject to random errors. The geolocation Cramer-Rao lower bound (CRLB) is derived and the performance improvement due to the use of target altitude information is quantified. An algebraic geolocation solution is developed and its approximate efficiency under small Gaussian noise is established analytically. Its sensitivity to the target altitude error is also studied. Simulations justify the validity of the theoretical developments and illustrate the good performance of the proposed geolocation method.