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测角精度是单脉冲二次监视雷达的重要指标偏离瞄准轴角(OBA)表反映了天线和差比与目标偏离瞄准轴角度间的关系,是单脉冲二次雷达能够正确测量目标角度的关键所在。针对实际工程中雷达原始OBA表数据无法直接获取,以及无法实际测量天线参数的情况,文中提出了基于OBA表自适应生成方法的单脉冲二次雷达角度测量方法,详细介绍了该方法的基本原理和工程实现步骤。二次雷达录取设备实际工程中的现场联试结果表明:通过误差统计的方法自适应生成的OBA表,为目标方位的提取提供了较精确的修正数据,大大地提高了目标的方位测量精度。
Angular accuracy is an important indicator of a single-shot secondary surveillance radar. Deviation from the OBA table reflects the relationship between the antenna and the difference ratio and the target deviation from the aiming axis angle. It is the key of single-pulse secondary radar to correctly measure the target angle Where you are. Aiming at the problem that the original radar OBA table data can not be directly obtained and the antenna parameters can not be measured, a single pulse secondary radar angle measurement method based on OBA table adaptive generation method is proposed in this paper. The principle of the method is introduced in detail. And project realization steps. The results of on-site experiments in the secondary radar acquisition equipment show that the OBA table adaptively generated by the error statistics method provides more accurate correction data for the extraction of the target azimuth and greatly improves the azimuth measurement accuracy of the target.