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Target tracking method under DoS attack

A target tracking and definition technology, which is applied in the field of target tracking under DoS attacks, can solve the problems of poor stability and low precision, and achieve the effect of improving precision and ensuring computational complexity

Inactive Publication Date: 2020-05-05
ZHEJIANG UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of poor stability and low precision of existing target tracking methods under DoS attacks, the present invention proposes a target tracking method under DoS attacks, which alleviates the performance degradation caused by DoS attacks and improves the target tracking accuracy of the system

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  • Target tracking method under DoS attack

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings.

[0048] refer to Figure 1 to Figure 7 , a target tracking method under DoS attack, described method comprises the steps:

[0049] Step 1: Establish the state model and measurement model of the system, and model the DoS attack phenomenon. The process is as follows:

[0050] 1.1 Establish a system state model

[0051] x(t+1)=f(x(t))+B(t)w(t) (1)

[0052] where x(t)∈R n is the system state, f(x(t))∈R n×1 is a nonlinear vector function assumed to be continuously differentiable, w(t)∈R n is the process noise, and satisfies w T (t)w(t)≤δ w , B(t) is a known matrix with appropriate dimensions;

[0053] 1.2 Establish system measurement model

[0054] z i (t)=g i(x(t))+D i (t)v i (t), i∈{1,2,...,L} (2)

[0055] in, is a nonlinear vector function assumed to be continuously differentiable, is the measurement noise and satisfies D. i (t) is a known matrix with...

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Abstract

The invention discloses a target tracking method under DoS attack. The method comprises the following steps: establishing a state model and a measurement model of a system, and initializing a system state, sampling time and control parameters; modeling a signal received by the monitoring center under the DoS attack; defining a local state estimate (LSE) and a distributed fusion estimate (DFE); designing two optimization problems for the networked nonlinear estimation system, and respectively calculating to obtain a local estimation gain and an optimal weighting matrix; iterative updating is carried out to obtain the optimal estimation of the target position; the distributed fusion estimation algorithm is provided for a networked nonlinear system under DoS attack, and compared with an existing target tracking method, the distributed fusion estimation algorithm effectively improves the target tracking precision on the premise of ensuring the calculation complexity.

Description

technical field [0001] The invention belongs to the field of moving target tracking, and in particular relates to a target tracking method under DoS attack. Background technique [0002] Target tracking involves many aspects such as communication technology and microelectronics technology. In recent years, the development of embedded systems has made wireless sensor networks an important research field. Wireless sensor networks are being rapidly deployed in many application fields, such as home monitoring, vehicle tracking, and industrial monitoring. Wireless sensor networks distribute many nodes in different areas to provide detailed target information. Object tracking is a continuous localization problem that involves real-time estimation of the location of moving objects. In addition, networked fusion estimation has become one of the focuses in many information technology fields. Using fused estimation techniques to combine information from multiple wireless sensors can...

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L63/1416H04L63/1458
Inventor 陈博俞钡钡朱道萍章宇晨俞立
Owner ZHEJIANG UNIV OF TECH
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