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http://dx.doi.org/10.5573/ieie.2014.51.7.060

A Sequential Estimation Algorithm for TDOA/FDOA Extraction for VHF Communication Signals  

Kim, Dong-Gyu (Department of Electrical and Computer Engineering, Pusan National University)
Kim, Yong-Hee (Department of Electrical and Computer Engineering, Pusan National University)
Park, Jin-Oh (LIG nex1)
Lee, Moon Seok (LIG nex1)
Park, Young-Mi (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.51, no.7, 2014 , pp. 60-68 More about this Journal
Abstract
In modern electronic warfare systems, a demand on the more accurate estimation method based on TDOA and FDOA has been increased. TDOA/FDOA localization consists of two-stage procedures; the extraction of information from signals, and the estimation of emitter location. CAF(complex ambiguity function) is known as a basic method in the extraction stage. However, when we extract TDOA and FDOA information from VHF(very high frequency) communication signals, conventional CAF algorithms may not work within a permitted time because of much computation. Therefore, in this paper, an improved sequential estimation algorithm based on CAF is proposed for effective calculation of extracting TDOA and FDOA estimates in terms of computational complexity. The proposed method is compared with the conventional CAF-based algorithms through simulation. In addition, we derive the optimal performance based on the CRLB(Cramer-Lao lower bound) to check the extraction performance of the proposed method.
Keywords
TDOA; FDOA; electronic warfare; CAF;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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