NDLI: Signal censoring and fusing with system-level communication constraints in multistatic radar: a J-divergence and Bhattacharyya distance-based approach

Content Provider	IET Digital Library
Author	Cao, Ding Zhou, Shenghua Liu, Hongwei Liu, Jun Zang, Huikai
Abstract	Decentralised detection using censored observations is an effective way to mitigate communication constraints where each sensor only transmits the ‘informative’ observations to a fusion centre (FC), and censors those deemed ‘uninformative’. In this study, a censoring rule is used at each spatial diversity channel such that only the observation exceeding a local threshold is transmitted, where the local threshold controls the communication rate. In particular, the authors consider a scenario where there exists a communication constraint at the FC. To design a proper communication bandwidth allocation (CBA) algorithm, two Ali-Silvey distance measures, i.e. the J-divergence (JD) and Bhattacharyya distance (BD), are utilised as objective functions to achieve a manageable optimisation procedure for designing local thresholds. The CBA algorithm is proposed by solving a constrained non-linear programming problem through the sequential quadratic programming method. Besides, the detection performance is analysed under the censoring scheme, given the optimised local thresholds. Numerical results indicate that the two Ali-Silvey distance-based algorithms can outperform the uniform bandwidth allocation strategy; meanwhile, the BD-based method performs better at high signal-to-noise scenarios but slightly worse at low, compared with the JD-based method.
Starting Page	1802
Ending Page	1814
Page Count	13
ISSN	17518784
Volume Number	11
e-ISSN	17518792
Issue Number	Issue 12, Dec (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/11/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2017.0159
Journal	IET Radar, Sonar & Navigation
Publisher Date	2017-08-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Ali-Silvey Distance Measures Bandwidth Allocation Bhattacharyya Distance Communication Bandwidth Allocation Communication Constraint Mitigation Communication Rate Control Constrained Nonlinear Programming Problem Control Application in Radio And Radar Decentralised Detection Diversity Reception Fusion Centre Informative Observations J-divergence Local Threshold Multistatic Radar Optimisation Optimisation Procedure Optimisation Technique Radar Equipment Radar Signal Processing Radar Theory Sensor Fusion Sequential Quadratic Programming Signal Censoring Signal Detection Signal Fusing Spatial Diversity Channel System And Application System-level Communication Constraint Telecommunication Control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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