公开(公告)号：US5192955A

公开(公告)日：1993-03-09

申请号：US765346

申请日：1991-09-25

申请人： Bao N. Hoang

发明人： Bao N. Hoang

IPC分类号： G01S13/44 ,  G01S13/68

CPC分类号： G01S13/685 ,  G01S13/449

摘要： A target tracking system and methods that can isolate and maintain stable track on a selected target in multiple-target environment. In multiple-target environments, the signal returns received at the sum and difference channels are composites of individual targets. By decomposing received signals into individual components, angle measurements to each target are computed, and consequently, a specified target is isolated and accurately tracked in a stable manner. The present invention provides for apparatus and methods that compute angle measurements to each individual airborne target in a multiple target environment. The composite return signals from a number of targets that are closely spaced in Doppler are decomposed into their individual components, and hence, tracking measurements to each target are obtained without interference from other targets. The present invention may be used to determine the angular position of individual airborne targets within a multiple target environment. The present invention exploits the phase relationship between the sum and difference channel outputs of a single Doppler filter and between the sum channel outputs of two adjacent Doppler filters to decompose composite signal returns of targets into their individual components. Consequently, an independent angle measurement for each target is obtained. In addition, the number of targets with distinct velocities may also be determined. Implementation of the present invention improves the performance of single target tracking in multiple-target environments. Since independent measurement to each target is obtained, accurate and stable track on any target is maintained.

摘要翻译： 目标跟踪系统和方法，可以在多目标环境中隔离并维护所选目标上的稳定轨迹。 在多目标环境中，信号返回接收到的和和差分信道是单个目标的复合。 通过将接收到的信号分解成各个分量，计算每个目标的角度测量，因此，指定的目标被隔离并且以稳定的方式被精确地跟踪。 本发明提供了在多个目标环境中对每个单独的机载目标计算角度测量的装置和方法。 来自在多普勒中紧密间隔的多个目标的复合返回信号被分解成它们的各个分量，因此在不受其他目标的干扰的情况下获得对每个目标的跟踪测量。 本发明可以用于确定多个目标环境中各个机载目标的角位置。 本发明利用单个多普勒滤波器的和信道输出和差分信道输出之间的相位关系以及两个相邻多普勒滤波器的和信道输出之间的相位关系，以将目标的复合信号返回分解成它们的各个分量。 因此，获得每个目标的独立角度测量。 此外，还可以确定具有不同速度的目标的数量。 本发明的实现提高了多目标环境中单目标跟踪的性能。 由于获得对每个目标的独立测量，因此保持任何目标的准确和稳定的轨迹。