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http://dx.doi.org/10.5573/ieek.2013.50.7.076

Gauss-Newton Based Emitter Location Method Using Successive TDOA and FDOA Measurements  

Kim, Yong-Hee (Department of Electrical and Computer Engineering, Pusan National University)
Kim, Dong-Gyu (Department of Electrical and Computer Engineering, Pusan National University)
Han, Jin-Woo (Agency for Defense Development)
Song, Kyu-Ha (Agency for Defense Development)
Kim, Hyoung-Nam (Department of Electrical and Computer Engineering, Pusan National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.50, no.7, 2013 , pp. 76-84 More about this Journal
Abstract
In the passive emitter localization using instantaneous TDOA (time difference of arrival) and FDOA (frequency difference of arrival) measurements, the estimation accuracy can be improved by collecting additional measurements. To achieve this goal, it is required to increase the number of the sensors. However, in electronic warfare environment, a large number of sensors cause the loss of military strength due to high probability of intercept. Also, the additional processes should be considered such as the data link and the clock synchronization between the sensors. Hence, in this paper, the passive localization of a stationary emitter is presented by using the successive TDOA and FDOA measurements from two moving sensors. In this case, since an independent pair of sensors is added in the data set at every instant of measurement, each pair of sensors does not share the common reference sensor. Therefore, the QCLS (quadratic correction least squares) methods cannot be applied, in which all pairs of sensor should include the common reference sensor. For this reason, a Gauss-Newton algorithm is adopted to solve the non-linear least square problem. In addition, to show the performance of the proposed method, we compare the RMSE (root mean square error) of the estimates with CRLB (Cramer-Rao lower bound) and derived the CEP (circular error probable) planes to analyze the expected estimation performance on the 2-dimensional space.
Keywords
Emitter location; TDOA; FDOA;
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Times Cited By KSCI : 1  (Citation Analysis)
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