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Iteratively distributed instrumental variable-based pseudo-linear information filter for angle-only tracking
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DOI：10.1016/j.isatra.2023.02.015.png)
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摘要
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This paper presents a distributed filtering problem for three-dimensional angle-only target tracking (AOTT) in sensor (i.e., observer) networks. An instrumental variable-based pseudo-linear information filter (IVIF) is firstly derived on the basis of the designed bias-compensated pseudo-linear information filtering, with the help of summation forms of information quantities and bias compensation in a centralized fusion manner. Then, the distributed IVIF (DIVIF) is put forward by using finite-time average consensus to obtain the arithmetic means of defined information quantities and compensated bias in observer networks, which ensures that the filtering result of every observer is consistent with the centralized one. Finally, the iteratively DIVIF is proposed via gradually approaching the true values of relative distance and the corresponding angles between the target and every observer to get the filtering parameters more and more accurately, in order to achieve higher filtering precision. In addition, the computational complexity of the proposed method is also analyzed. The advantages of filtering precision of the proposed method over the existing pseudo-linear Kalman filter and its variants are demonstrated by an AOTT example in observer networks in terms of iteration steps, different levels of process noises and observer's accuracy. & COPY; 2023 ISA. Published by Elsevier Ltd. All rights reserved.
Keyword:
Angle-only target tracking
Iteratively distributed filtering
Pseudo-linear estimation
Instrumental variables
Finite-time average consensus
期刊
IF:
6.5
论文数:
5.9K
被引数:
2.0W
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