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How to Select TDOA-Based Bearing Measurements for Improved Passive Triangulation Localization

Title
How to Select TDOA-Based Bearing Measurements for Improved Passive Triangulation Localization
Authors
Song, Kyu-HaKim, San-HaeSong, Woo-Jin
POSTECH Authors
Song, Woo-Jin
Date Issued
Feb-2019
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
Abstract
When time difference of arrival (TDOA)-based bearing measurements are used in passive triangulation, the accuracy of localization depends on the geometric relationship between the emitter and the sensors. In particular, the localization accuracy varies with the geometric conditions in TDOA-based direction finding (DF) for bearing measurement and lines of bearing (LOBs) crossing for triangulation. To obtain an accurate estimate in passive triangulation using TDOA-based bearing measurements, we shall use these bearings selectively by considering geometric dilution of precision (GDOP) between the emitter and the sensors. To achieve this goal, we first define two GDOPs related to TDOA-based DF and LOBs crossing geometries, and then propose a new hybrid GDOP by combining these GDOPs for a better selection of bearings. Subsequently, two bearings with the lowest hybrid GDOP condition are chosen as the inputs to a triangulation localization algorithm. In simulations, the proposed method shows its enhancement to the localization accuracy.
URI
http://oasis.postech.ac.kr/handle/2014.oak/94911
DOI
10.1587/transfun.E102.A.490
ISSN
1745-1337
Article Type
Article
Citation
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, vol. E102A, no. 2, page. 490 - 496, 2019-02
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 SONG, WOO JIN
Dept of Electrical Enginrg
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