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    • 6. 发明授权
    • Method of counting multiple targets in the post detection processing of
a radar
    • 在雷达的后检测处理中对多个目标进行计数的方法
    • US4536764A
    • 1985-08-20
    • US427332
    • 1982-09-29
    • Robert D. Freeman
    • Robert D. Freeman
    • G01S7/292G01S13/524G01S13/52G01S7/28
    • G01S13/5246G01S7/292
    • A method of analyzing the doppler spectrum obtained from narrow band doppler filtering in the post-detection processing of a radar for the purposes of counting multiple targets moving in close proximity to one another is disclosed. More specifically, a set of contiguous doppler frequency signals is selected from the computed doppler frequency spectrum of a range gate of a radar look for establishing the target count thereof. The selected doppler frequency signals are processed in two passes with each pass including the steps of searching, threshold detection, and target counting. A pass count is established for each pass. The pass counts are combined in a predetermined count algorithm to establish a final count of the range gate being processed. Moreover, a selected group of contiguous range gates may be selected to establish a cumulative or total final count of targets in a selected portion of the range of a radar look. The established final counts of the selected range gates are combined in a cumulative count algorithm which takes into consideration range gate signal quality and the avoidance of multiple countings of a common target which may straddle adjacent range gates.
    • 公开了一种在雷达的后检测处理中分析从窄带多普勒滤波获得的多普勒频谱的方法,用于计数彼此靠近移动的多个目标。 更具体地,从用于建立其目标计数的雷达外观的范围门的计算多普勒频谱中选择一组连续的多普勒频率信号。 所选择的多普勒频率信号在两遍中进行处理,每次通过包括搜索,阈值检测和目标计数的步骤。 每次通过设定通行证数。 通过计数以预定计数算法组合,以建立正在处理的范围门的最终计数。 此外,可以选择所选择的一组连续范围门,以建立在雷达外观的范围的选定部分中的目标的累积或总的最终计数。 所选择的范围门的建立的最终计数被结合在累积计数算法中,累积计数算法考虑了范围门信号质量和避免可能跨越相邻范围门的公共目标的多个计数。