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如何维持雷达检测系统恒定的虚警率是现代雷达技术和信号处理技术中重要的问题之一。为使雷达检测系统在复杂的杂波环境中获得恒定的虚警率,就需要有高性能的恒虚警(CFAR)处理器。本文提出的新型CFAR 处理器选择一个与被检测距离单元的值相接近的均值来作为CFAR 的门限,从而使这种处理器具有能够及时反映外部杂波环境变化的自适应性;它硬件实现简单,具有很好的抗多目标效应、抗杂波边缘效应、抗大目标“吃”小目标效应以及降低(CFAR)损失的性能。
How to maintain a constant false alarm rate of radar detection system is one of the most important problems in modern radar technology and signal processing technology. For radar detection systems to achieve constant false alarm rates in complex clutter environments, high performance CFAR processors are required. The new CFAR processor proposed in this paper chooses an average value close to the distance unit to be detected as the threshold of CFAR so that the processor has the adaptability to reflect the change of external clutter environment in time. , Has good anti-multi-target effect, anti-clutter edge effect, anti-large target “eat” small target effect and reduce (CFAR) loss performance.