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29 October 1997 Small-target tracking technique with data fusion of distributed sensor net
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Small targets defined in the paper are low-RCS targets or weak infrared emitting targets which are very difficult to track by a single sensor (a radar or an IRST) because the measurements gained by the sensor are usually unsuccessive. Although a single sensor can only observe the target in unsuccessive way, the sensor net may sometimes track the target continuously by data fusion of the fractional trajectories or hits of the target from all sensors of the netted system. Typically, data fusion method of a distributed sensor net is track-to-track fusion that requires continuous track- level data (space vector estimates and their covariance matrices) from sensors in the net. For the case of small targets this condition can not be satisfied. In the paper, we derive a method to fuse the data of the small target from the system. The method includes data association and tracking. Special attention is paid to track initiation with Hough transform for the association algorithm. Test and results are also given in the paper.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hongwei Cheng, Zhongkang Sun, Qi Liu, and Yongguang Chen "Small-target tracking technique with data fusion of distributed sensor net", Proc. SPIE 3163, Signal and Data Processing of Small Targets 1997, (29 October 1997);


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