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中文摘要：
提出了一种基于改进的随机Hough变换快速航迹起始算法，用于解决低可观测目标作匀加速抛物线运动时的航迹起始问题。该算法利用随机选取的2点的速度方向与搜索的第3个点的位置信息来提取抛物线轨迹，并利用坐标变换降低投票参数空间维数来快速起始匀加速抛物线运动目标的航迹，有效地解决了无效采样和累积问题。与传统的基于五点随机Hough变换的航迹起始算法相比，仿真结果表明：该算法具有虚警率低、运算速度快优点。
英文摘要：
In order to solve the problem of the Track Initiation of dim target with constant acceleration along parabolic curve, a new speedy Track Initiation algorithm based on improved Randomized Hough Transform （RHT） was proposed in this paper. This algorithm makes use of the speed direction of two points picked randomly and the location information of third point searched to calculate the parabola parameters, and the coordinate transform was applied to reduce the dimensions of the vote parameters space in order to speedily initiate the track of multitarget with constant acceleration. As a result, the problems of invalid sample and accumulation were well solved. Compared with the traditional Initiation track methods based on the five points, the simulation results show that the novel method has the advantage of higher speed and lower false alarm probability.
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