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Volume 30 Issue 8
Jan.  2011
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Jin Shu-ling, Liang Yan, Pan Quan, Cheng Yong-mei. A Two-hierarchy Hough Transform Based Track Initiation Method for Sky-wave Over-the-Horizon Radar[J]. Journal of Electronics & Information Technology, 2008, 30(8): 1968-1972. doi: 10.3724/SP.J.1146.2006.02033
Citation: Jin Shu-ling, Liang Yan, Pan Quan, Cheng Yong-mei. A Two-hierarchy Hough Transform Based Track Initiation Method for Sky-wave Over-the-Horizon Radar[J]. Journal of Electronics & Information Technology, 2008, 30(8): 1968-1972. doi: 10.3724/SP.J.1146.2006.02033

A Two-hierarchy Hough Transform Based Track Initiation Method for Sky-wave Over-the-Horizon Radar

doi: 10.3724/SP.J.1146.2006.02033
  • Received Date: 2006-12-25
  • Rev Recd Date: 2007-06-25
  • Publish Date: 2008-08-19
  • The 3L (low data sampling rate, low measurement precision and low detection probability) features of sky-wave Over-The-Horizon Radar (OTHR) pose new challenges to the conventional track initiation methods. In this paper, a Two-Hierarchy Hough Transform track initiation method (TH-HT) is proposed. Firstly the range-time data space is used to hierarchical I Hough transform and rough candidate tracks are obtained, where Doppler is used as an accumulation constraint; then such rough candidate tracks are further refined by time-azimuth accumulation in hierarchical II Hough transform. Moreover, two theorems concerning the expectation of the number of clutters voting to each cell of each hierarchy are given, which provides a way of determining the two-hierarchy threshold value. In simulation, the proposed method is compared with the classical initiation method of OTHR-MMUPDA. Simulation results show that TH-HT has higher track detection probability and lower false track probability; meanwhile it is much less time-consuming.
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