BROADBAND CROSSING TARGET TRACKING APPARATUS AND TARGET TRACKING METHOD

摘要

The present invention relates to a tracking technology for a broadband cross-target for underwater acoustic detection, and a method for applying frequency subband automatic selection for each target and subband characteristic information for each target in order to improve the tracking robustness of a broadband cross target in a passive sonar system, and Describe the device. Although the effectiveness and utilization of active sonars is increasing, the use of active sonars is limited in underwater vehicles due to the characteristics of the operational concept, and passive sonars are used in most situations. Information processing using narrow-band detection data in passive sonar is also useful, but information processing using wide-band detection data cannot be overlooked. This means that information processing methods of various techniques can be proposed by utilizing the frequency band of the broadband detection data. On the other hand, in tracking using broadband detection data, when targets intersect, mis-coupling between the predicted value and the measured value of the filter frequently occurs for each target, and thus, a phenomenon in which the detection signal of the other target is tracked or the tracking is lost. This happens. In the present invention, in order to compensate for these shortcomings, a technique for improving the robustness of passive sonar or broadband cross-target tracking is secured by automatically extracting the frequency sub-band features for each cross-target and utilizing the same for data combination.