Modern methods for tracking polar bear populations have been employed only since the mid-1980s, and are expensive to perform consistently over a large area.
跟踪北极能种群的现代方法仅在20世纪80年代中期才被采用，而且，要在大范围内连续采用这种方法，其代价非常高昂。
The radome causes an angular displacement of the tracking aerial polar diagram.
天线罩使跟踪天线的极图产生了角位移。
The radome causes an angular displacement of the tracking aerial polar diagram .
天线罩使跟踪天线的极图产生了角位移。
The traditional passive tracking algorithm under polar coordinates and its deficiencies were analyzed.
介绍了极坐标系下的被动跟踪算法及存在的问题，并分析了其原因。
Adaptive Kalman filter algorithm study (1) Based on the study of the passive target tracking in modified polar coordinates, the nonlinear dynamic model is devised.
自适应滤波算法(1)研究了极坐标系下的水下目标被动跟踪问题，建立了被动跟踪的动力学模型。
Concerning the problem to instability and low accuracy of the passive filter on bearings-only target tracking, a modified adaptive Extended Kalman filter algorithm on polar coordinate is presented.
在水下被动目标跟踪系统中，直角坐标系下的扩展卡尔曼滤波器容易发散而导致滤波精度很差。
With a modified polar coordinate, a specific method to realize bearings-only target tracking by means of an extended Kalman filter is discussed in this paper.
本文讨论在修正极坐标下利用推广卡尔曼滤波实现纯方位目标跟踪的具体方法。
With a modified polar coordinate, a specific method to realize bearings-only target tracking by means of an extended Kalman filter is discussed in this paper.
本文讨论在修正极坐标下利用推广卡尔曼滤波实现纯方位目标跟踪的具体方法。
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