期刊
DIGITAL SIGNAL PROCESSING
卷 89, 期 -, 页码 49-59出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.dsp.2019.03.005
关键词
Random finite set; FISST; Multiple target filtering; N-type PHD filter; Gaussian mixture; OSPA metric
资金
- Engineering and Physical Sciences Research Council (EPSRC) [EP/K009931]
- James Watt Scholarship
- Engineering and Physical Sciences Research Council [EP/K009931/1] Funding Source: researchfish
- EPSRC [EP/K009931/1] Funding Source: UKRI
A Multiple Target, Multiple Type Filtering (MTMTF) algorithm is developed using Random Finite Set (RFS) theory. First, we extend the standard Probability Hypothesis Density (PHD) filter for multiple types of targets, each with distinct detection properties, to develop a multiple target, multiple type filtering, N-type PHD filter, where N >= 2, for handling confusions among target types. In this approach, we assume that there will be confusions between detections, i.e. clutter arises not just from background false positives, but also from target confusions. Then, under the assumptions of Gaussianity and linearity, we extend the Gaussian mixture (GM) implementation of the standard PHD filter for the proposed N-type PHD filter termed the N-type GM-PHD filter. Furthermore, we analyze the results from simulations to track sixteen targets of four different types using a four-type (quad) GM-PHD filter as a typical example and compare it with four independent GM-PHD filters using the Optimal Subpattern Assignment (OSPA) metric. This shows the improved performance of our strategy that accounts for target confusions by efficiently discriminating them (C) 2019 Elsevier Inc. All rights reserved.
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