Abstract
In this work, the ship relative integrated navigation approaches are studied for the navigation scenarios with the measurements disturbed by unknown statistical property noises and with the injected fault measurement attacks. On the basis of the limited energy property of system noises, the navigation states are estimated by the local finite horizon H∞ filter to satisfy the performance index function. Then, the local estimates are fused in the relative integrated navigation system with the weight fusion parameters obtained by using the local estimate error measurements. Further, the injected fault measurement attacks are considered in the relative integrated navigation systems. Due to the system noises and the measurement noises having unknown statistical property, the classical Chi-square test can hardly be utilized to detect the injected fault measurements. Therefore, a secure relative integrated navigation method is proposed with a distance-based clustering detector. The finial simulation results illustrate the effectiveness of the proposed relative integrated navigation approach and the proposed secure relative integrated navigation approach.
Highlights
The application of maritime communication networks brings opportunities and challenges to ship integrated navigation systems
In [7,8,9], the ship relative integrated navigation methods were given to fuse the navigation measurements obtained by the navigation devices owned to the target ship and relative navigation information from the adjacent ships, by using the Kalman fusion filter approach
A relative integrated navigation approach is presented, on the basis of the finite horizon H∞ distributed fusion filter, with the measurements disturbed by unknown statistical property noises
Summary
The application of maritime communication networks brings opportunities and challenges to ship integrated navigation systems. The integrated navigation approaches developed from the finite horizon H∞ central fusion methods can be improved to simultaneously deal with the measurements from the inherent navigation devices and the relative navigation measurements. These integrated navigation methods can improve the accuracy of ship navigation, if the measurements are attacked by hackers during communication, these integrated navigation approaches lack the necessary security detection and defense method, which will inevitably cause serious consequences. A relative integrated navigation approach is presented, on the basis of the finite horizon H∞ distributed fusion filter, with the measurements disturbed by unknown statistical property noises. A simulation example is provided to illustrate the effectiveness of the proposed methods in Section 6, and Section 7 concludes this work
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