%0 Journal Article
%T A Two-hierarchy Hough Transform Based Track Initiation Method for Sky-wave Over-the-Horizon Radar<br>一种天波超视距雷达分级Hough变换航迹起始方法
%A Jin Shu-ling
%A Liang Yan
%A Pan Quan
%A Cheng Yong-mei
%A <br>金术玲
%A 梁彦
%A 潘泉
%A 程咏梅
%J 电子与信息学报
%D 2008
%I 
%X 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.
%K Sky-wave over-the-horizon radar
%K Track initiation
%K Hough transform<br>天波超视距雷达
%K 航迹起始
%K Hough变换
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=BFB2510C0E3467F7866518CD04B61FAB&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=5D311CA918CA9A03&sid=E4BB32FC813F450F&eid=D4DC9CE6E809E937&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=1&reference_num=18