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参差脉冲重复频率对空监视雷达能抑制距离模糊和径向速度模糊,同时保持对消固定目标回波的能力。因此有可能精确地测量被测目标的径向速度(符号值和绝对值),达到接近匹配滤波器的最佳目标探测能力,匹配滤波通过与许多基本匹配滤波器等效的专用计算机来实现。为了达到所需的计算速度,三角函数(正弦和余弦函数)用更简单的函数来近似,由此引起的偏差在大多数情况下是可以容许的。RAC1NE 型雷达采用了这种方法。
Divergence pulse repetition frequency (BWR) surveillance airwaves can suppress ambiguity in range and radial velocity while maintaining the ability to cancel target echoes. It is therefore possible to accurately measure the radial velocity (sign value and absolute value) of the measured target to achieve the best target detection capability of the matched-to-matched filter, which is implemented by a dedicated computer equivalent to many of the basic matched filters. In order to achieve the required computational speed, the trigonometric functions (sine and cosine functions) are approximated by simpler functions, and the resultant deviations are tolerable in most cases. RAC1NE radar uses this method.