NDLI: Analysis of sensor-emitter geometry for emitter localisation using TDOA and FDOA measurements

Content Provider	IET Digital Library
Author	Kim, Yong Hee Kim, Dong Gyu Han, Jin Woo Song, Kyu Ha Kim, Hyoung Nam
Abstract	In passive emitter localisation, the accuracy of an estimator is significantly affected by the geometric relationship between the sensors and the emitter. The estimation performance varies with the manoeuvre strategies of sensors, even if the same estimator is utilised to locate an emitter. To achieve desirable performance by providing a guideline for manoeuvring sensors, this study analysed the effects of relative sensor-emitter geometry/velocity for when time difference of arrival (TDOA) and frequency difference of arrival (FDOA) measurements are utilised to locate an unknown emitter in an electronic warfare (EW) system. The analysis starts with the derivation of a partitioned Fisher information matrix (FIM) from the partial derivatives of TDOA/FDOA measurements. Then, the Cramer–Rao lower bounds on the variances of the estimates for an emitter position and velocity are computed from the submatrices of the FIM. Based on the analyses, the estimation accuracies are investigated according to the relative sensor-emitter geometry/velocity under selected sensor manoeuvre scenarios. Simulations are included to verify the theoretical results, followed by discussions for establishing a sensor geometry and manoeuvre strategy for EW activities.
Starting Page	341
Ending Page	349
Page Count	9
ISSN	17518784
Volume Number	11
e-ISSN	17518792
Issue Number	Issue 2, Feb (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/11/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2016.0314
Journal	IET Radar, Sonar & Navigation
Publisher Date	2016-08-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acceleration Algebra Combinatorial Mathematics Cramer-Rao Lower Bound Direction of Arrival Estimation Electronic Warfare Electronic Warfare System EW System FDOA Measurement FIM Fisher Information Matrix Frequency Difference of Arrival Measurement Frequency Measurement Geometry Matrix Algebra Passive Emitter Localisation Position Measurement Rotation Measurement Sensing Device And Transducers Sensor Sensor-emitter Geometry-velocity Analysis Signal Processing And Detection Spatial Variables Measurement TDOA Measurement Time Difference of Arrival Measurement Time Measurement Velocity Velocity Measurement
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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