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The tracking performance of traditional target tracking systems degenerates significantly when there is a drop of detection probability with intermittent observation. In this paper, a simple elliptical target model is proposed for exploiting sensor measurements of target extent, and then we design a filter for target tracking based on confidence weighted fusion with intermittent observation. Firstly,...
Vector sound intensity (i.e., sound-power flow per unit area) can be used to determine the direction of a sound source in water. A typical vector sound intensity array is composed of three pairs of sensors with pairs aligned along orthogonal axes. Such a typical vector sound intensity array, in our opinion, is still not convenient for engineering implementation. In this paper the four-sensor vector...
It has been an acceptable conclusion that the vector sound intensity array can estimate the direction of sound sources in high precision in an isotropic noise field, but the error in anisotropic noise field has not been systematically studied yet. The error in doa estimation caused by an anisotropic noise field is analyzed in detail here by taking the ocean surface noise field introduced by cron and...
By constructing a novel symmetric subarrays structure, a new 3-D near-field source localization algorithm is proposed. The new method can be divided into three important parts. The first part is the elevation angle estimation based on two generalized ESPRIT algorithm by a vertical uniform linear array, which are spectral search-based generalized ESPRIT and search-free generalized ESPRIT. And the second...
The method to determine the bearings of the three highlights sections of a ship based on a non-typical vector sound intensity array was proposed here. The array consists of 4 sensors that formed a spatial cross and the distances between the sensors can be changed. The bearing of the low frequency noise radiated by the midship and the middle part between the midship and stern is determined by sound...
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