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Examination of the Effect of Array Weighting Function on Radar Target Detectability

机译：检验阵列加权函数对雷达目标可检测性的影响

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摘要

A methodology is described to assess the detectability of targets by an airborne fire control radar (FCR) operating in a medium pulse-repetition frequency (PRF) mode in the presence of strong ground clutter as a function of the transmitting and receiving antenna array weighting functions and proportion of failed array elements. It describes the radar, antenna, and clutter modelling processes and the method by which target detectability is quantified. The detectability of targets in clutter is described using a detectability map, which provides a useful means of comparing target detectability as clutter conditions change. It concludes that the best target detectability is to be achieved using those weighting functions on transmit and receive which result in the lowest average sidelobe levels but that the margins between the more highly tapered weighting functions were small. Furthermore, it concludes that target detectability degrades as the proportion of failed elements increases. A failure of 5% of the elements gave modest, though meaningful, degradations in target detectability and would therefore form a suitable upper limit.
机译：描述了一种方法，用于评估在存在强地面杂波的情况下以中等脉冲重复频率（PRF）模式运行的机载火控雷达（FCR）的目标可检测性，该函数是发射和接收天线阵列加权函数的函数和失败数组元素的比例。它描述了雷达，天线和杂波建模过程以及量化目标可检测性的方法。使用可检测性图描述杂波中目标的可检测性，该图提供了一种有用的手段，可以在杂波条件变化时比较目标可检测性。结论是，使用那些在发送和接收时产生的加权函数可以实现最佳的目标可检测性，这些加权函数会导致最低的平均旁瓣电平，但较高的锥形加权函数之间的余量很小。此外，得出的结论是，随着故障元素比例的增加，目标可检测性降低。 5％的元素失效会使目标可检测性适度（尽管有意义）降低，因此会形成合适的上限。

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