异类传感器合成量测的模糊航迹起始方法

雷达/红外联合探测是复合精确制导技术的一个重要发展方向。针对二维雷达、红外传感器存在系统误差以及测量空间不同的情况，提出一种基于量测合成的异类传感器模糊航迹起始方法。该方法首先计算相同周期内异类传感器方位角的拓扑序列，综合利用拓扑序列法和加权平均法对维数不同的量测进行分类与合成，然后累积多个周期的合成量测建立候选目标量测集，最后通过模糊Hough变换(FHT)方法检测目标航迹、实现航迹起始。在航迹检测中，充分利用量测序列的时间信息和目标的运动信息，同时考虑了量测数据的不确定性和航迹确认准则对航迹起始的影响。实验结果表明，提出方法能够有效地实现异类传感器航迹起始，与传统的Hough变换(HT)方法相比，能够降低算法的计算量和提高直线航迹检测的准确率。 

Fuzzy Track Initialization with Combined Measurements for Heterogeneous Sensors

The Radar/IR integrated detector has become an important stream of combined precision guided technology. For track initialization caused by systematic error and different measurement spaces of 2D radar/IR sensors, a new fuzzy track initialization method based on measurement combination for heterogeneous sensors is proposed. In this proposed method, through extracting topology sequences of azimuth angle from each sensor in the same period, measurements of different dimension are classified with the topology sequence method and they are fused with the weighted average method. And a set of candidate targets’ measurements is built by cumulating combined measurements in several periods. Finally, a fuzzy Hough transform (FHT) method is utilized to detect targets’ tracks. In track detection, measurements’ sequence time information and targets’ kinematics information are utilized sufficiently. Furthermore, the influences of both measuring system uncertainties and fixing track rules on track initialization are considered. Experimental results illustrate that the proposed method can realize track initialization for heterogeneous sensors effectively. It achieves less computation load and higher accuracy of line tracks extraction than the traditional Hough transform (HT) method.