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当目标通过距离选通门限定的范围时,雷达的重复频率脉冲和目标速度分量朝雷达方向通常有部分回波脉冲通过固定的距离选通门。本文介绍通过距离门的脉冲积分。这是以采用雷达回波之外的其它方法提供角跟踪这一假说为前提进行的。设R_a是需要探测的距离,v_o是测距时恒定的距离速率。图1表示周期为τs的理想探测脉冲波形。该脉冲代表了来自距离R_0目标的回波。将f_0s展宽到在探测距离R_a目标时的距离门上(图中虚线所示)。根据图1
When the target passes the range defined by the gated gate, the radar’s repetition frequency pulse and target velocity component usually have some echo pulses in the radar direction through a fixed distance gate. This article describes the pulse integration through the distance gate. This is based on the premise that angular tracking is provided by other means than radar echoes. Let R_a be the distance that needs to be probed, v_o is the constant distance velocity when measuring distance. Figure 1 shows the ideal probe pulse waveform with period τs. This pulse represents the echo from the target at distance R_0. Extend f_0s to the distance gate at the target of the detection range R_a (dotted line in the figure). According to Figure 1