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高PRF脉冲多卜勒雷达的测距模糊可用基于算术余数的简单算法予以分辨。得到的不模糊距离为R=T+R_a,式中T为查表中的值,R_a为测得的模糊距离值。本文的公式很容易推广到需用三个或更多PRF才能解模糊的测距系统。目标被杂波遮挡使可见度降低,并且在目标密集的环境中导致虚假距离值。本文示出在有较多的杂波和目标环境中大的作用距离要求用小的距离可分辨单元和尽可能低的PRF值。文中还对减少虚假值的稀疏表的产生法作了论述。最后,以S波段警戒雷达作为实例。
Ranging blurring of Doppler radar with high PRF pulse can be distinguished by a simple algorithm based on arithmetic residuals. The unambiguous distance obtained is R = T + R_a, where T is the value in the look-up table and R_a is the measured fuzzy distance value. The formulas in this article are easy to generalize to ranging systems that require three or more PRFs to be deblurred. Clutter obstructs the target to reduce visibility and results in false distance values in a target-intensive environment. This paper shows that a large range in clutter and target environments requires a small distance resolvable cell and as low a PRF value as possible. The article also discusses the method of generating sparse tables that reduce false values. Finally, take the S-band surveillance radar as an example.