ARPA是航船跟踪目标避免碰撞的重要设备，其目标跟踪的主要算法是简化α-β滤波算法。该算法用于匀速直线运动目标的滤波跟踪处理，对机动目标的跟踪性能较差，同时ARPA的引入还增加了坐标变换的运算量。针对上述问题，提出在ARPA系中统运用直角坐标系下的自适应α-β滤波算法，新方法在坐标变换后进行，减少了坐标变换运算量，增强了自适应跟踪能力，并实现机动目标的自适应跟踪，通过仿真验证了该方法的跟踪性能。%ARPA (automatic radar plotting aid)plotter is an important equipment for ship to avoid collision while tracking targets; its main algorithm for tracking targets is a simplified α-β filtering algorithm. The simplified algo-rithm is mainly used for filtering and tracking processing of uniform linear moving target, but its tracking capability for maneuvering target is poor. At same time, introduction of ARPA system also increases operand of coordinate transformation. To solve the aforecited problem an adaptive α-β filtering algorithm in rectangular coordinate system is used in ARPA system. Using new algorithm can reduce operand of coordinates transformation after coordinates transformation, and improve adaptive tracking capability, and implement adaptive tracking capability for maneuverable target, and finally, the simulation verifies tracking capability of this algorithm.
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