摘要
通过分析高度误差形成机理,结合大连探空站2011年7月26日雷达高度误差报警个例,分析高度误差报警机理,总结高度误差原因及解决方法。结果表明:产生高度误差的原因主要有气压"飞点"引起的误差、距离跟踪不正确引起的误差、雷达旁瓣跟踪引起的误差、频偏引起的增益降低产生的"飞点"、天气因素引起的误差和天线水平引起的误差等。本文从经常性误差报警、偶尔性误差报警和特殊天气引起的误差报警3个方面分析高度误差原因及解决方法,以期为高空气象探测提供参考依据。
Combining with a radar height error alarm case in Dalian sounding station on July 26 of 2011 ,the height error alarm mechanism was analyzed based on its formation mechanism,and reasons of errors and their solutions were summarized.The results show that height errors are caused by pressure “Flying spot”,incorrect distance tracking tolerance,sidelobe radar tracking,deviation because of lowering the gain arising from“Flying point”toler-ance level alarm and ultra poor weather conditions and so on.Causes and solutions of height error are summarized in terms of three aspects,i.e.recurring deviation alarm,occasionally tolerance alarm and special weather-induced tolerance alarm.The results could provide references for aerological sounding.
出处
《气象与环境学报》
2014年第6期163-168,共6页
Journal of Meteorology and Environment
基金
大连市气象局业务应用开发项目"L波段高空气象探测系统运行指南"(DLQX 2013-10)资助
关键词
L波段雷达
气压高度
球坐标高度
高度误差
L-band radar
Pressure altitude
Spherical coordinate＇ s height
Height error
