提高单脉冲二次雷达测角精度的方法

Algorithms for Enhancing Secondary Monopulse Surveillance Radar Angle Measuring Accuracy

单脉冲二次监视雷达偏离角(OBA,O ff-Boresight Angle)表的准确性对于测角精度至关重要,为了提高测角精度,文中提出了几种OBA表的估算方法。一种为直接法,需要飞机直接检飞;一种方法为统计的方法,估算时需要将应答机固定;还有一种为构造线性方程组的方法,它利用应答报告的内在联系,构造线性方程组,把OBA表值的估算转换成一个解线性方程组的问题。本文结合工程实际应用,重点介绍了后两种OBA表的估算方法,通过试验证明,在工程上都能够比较准确的估算出OBA表值。

The accuracy of secondary monopulse surveillance radar OBA （ off-boresight angle） is one of the most important factors affecting radar angle measuring precision. In order to improve radar angle measuring precision, some algorithms of estimating OBA are presented. The first method is a direct method, which requires aircraft flight test ; the second method is a statistical method, which requires fixing of the replying device; the third method is to constructa linear equation set, which is based on the relation ship between the franspender reports. Considering engineering application, this paper puts emphasis on the last two algorithms. The experiment results show that the proposed methods are effective in estimating OBA.