NDLI: Compensated robust least-squares estimator for target localisation in sensor network using time difference of arrival measurements

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Compensated robust least-squares estimator for target localisation in sensor network using time difference of arrival measurements

Content Provider	IET Digital Library
Author	Choi, Ka Hyung Ra, Won Sang Park, Jin Bae Yoon, Tae Sung
Abstract	A target localisation estimator based on time difference of arrival (TDOA) measurement is proposed. The localisation estimator is designed in the framework of the recently developed robust least-squares (RoLS) estimator, which provides an unbiased estimation result and can be implemented with a recursive filtering structure. However, when the RoLS estimator is applied to the localisation problem, its localisation performance depends on the knowledge of the stochastic information of the TDOA measurement. This dependency means that incorrectly given information causes localisation error. Therefore to complement the dependency of the given stochastic information of the TDOA measurement, we design a compensation procedure based on the constraints on the state variables of the estimator. The performance of the proposition under several cases of incorrectly given stochastic information is verified through computer simulation, and its filtering structure is compared with other existing localisation algorithms mathematically. In addition, the entire process of the proposed localisation estimator is derived as a recursive form for real-time applications.
Starting Page	664
Ending Page	673
Page Count	10
ISSN	17519675
Volume Number	7
e-ISSN	17519683
Issue Number	Issue 8, Oct (2013)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/7/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2012.0374
Journal	IET Signal Processing
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Compensated Robust Least-square Estimator Compensation Procedure Computer Simulation Estimator State Variables Filtering Method in Signal Processing Interpolation And Function Approximation Least Squares Approximation Localisation Problem Numerical Analysis Recursive Filter Recursive Filtering Structure RoLS Estimator Sensor Network Sensor Placement Stochastic Information Target Localisation Estimator TDOA Measurement Time Difference-of-arrival Measurement Time-of-arrival Estimation Wireless Sensor Network
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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