[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.11003/JKGS.2012.1.1.023

Design of an Enhanced TDOA Method for Swept CW Interferences

Kang, Hee Won (Satellite Navigation Team, CNS/ATM and Satellite Navigation Research Center, Korea Aerospace Research Institute)
Lim, Deok Won (Satellite Navigation Team, CNS/ATM and Satellite Navigation Research Center, Korea Aerospace Research Institute)
Heo, Moon Beom (Satellite Navigation Team, CNS/ATM and Satellite Navigation Research Center, Korea Aerospace Research Institute)

Publication Information

Journal of Positioning, Navigation, and Timing / v.1, no.1, 2012 , pp. 23-27 More about this Journal

Abstract

Recently, devices like Personal Privacy Devices (PPD) are being employed to avoid the detection of one's location by GPS, and most PPD transmits swept CW signals. However, signals transmitted from PPD may interfere a precise location system based on GPS. Accordingly, in order to reduce interferences by PPD, a technique to locate an interferer is needed. In order to locate an interferer AOA method and TDOA method are generally used, TDOA method is known to be more accurate than AOA method. Unfortunately, TDOA method has a problem of ambiguity in obtaining measurements of swept CW interference. Thus, this paper design a localization algorithm based on TDOA method that can accurately locate an interferer transmitting swept CW signals by resolving problem of ambiguity. In addition, feasibility of the designed algorithm has been verified by simulation results.

Keywords

PPD; swept CW; interference; localization; TDOA;

Citations & Related Records

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