论文部分内容阅读
一、引言雷达目标的自动检测系统对虚警率参数的恒定要求比较严格,以使检测系统工作在设计的最佳状态,并防止信息处理的饱和。因此,恒虚警问题已成为统计检测中的重要内容,恒虚警技术已广泛应用于现代的军用和民用雷达系统中。在参量恒虚警技术中,研究杂波干扰的幅度分布,以及合理设计恒虚警设备仍然是现在实用雷达中的课题之一,本文介绍一些设备的基本概念和原理。雷达相干接收机在相位检波后,热噪声,云雨等干扰的幅度分布一般为高斯分布,并认为在一定范围内是平稳的,在某个时刻幅度的概率密度为:
I. INTRODUCTION The automatic detection system of radar target has more strict requirements on the false alarm rate parameter so that the detection system works in the best state of design and prevents the saturation of information processing. Therefore, the constant false alarm problem has become an important part of statistical testing. CFAR technology has been widely used in modern military and civil radar systems. In constant CFAR technology, studying the amplitude distribution of clutter interference and designing CFAR equipment reasonably is still one of the topics in current practical radar. This paper introduces the basic concepts and principles of some equipments. Radar coherent receiver in the phase detection, thermal noise, cloud and other interference amplitude distribution is generally Gaussian distribution, and that in a certain range is stable, at a time the probability density of amplitude: