雷达高度误差报警原因及解决方法

气象与环境学报 ›› 2014, Vol. 30 ›› Issue (6): 163-168.doi:

雷达高度误差报警原因及解决方法

李勇¹王静^1,2 高磊³

1. 大连市气象装备保障中心，辽宁大连 116001；2. 大连探空站，辽宁大连 116001；3. 大连市气象信息中心，辽宁大连 116001

出版日期:2014-12-30 发布日期:2014-12-30

Causes of radar height error alarm and its solutions

LI Yong¹ WANG Jing^1,2 GAO Lei³

1. Dalian Meteorological Equipment Support Center, Dalian 116001, China; 2. Dalian Sounding station, Dalian 116001, China; 3. Dalian Meteorological Information Center, Dalian116001, China

Online:2014-12-30 Published:2014-12-30

摘要/Abstract

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，总结快速分析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。

关键词: L波段雷达, 气压高度, 球坐标高度, 高度误差

Abstract:

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 "tolerance 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.

Key words: L-band radar, Pressure altitude, Spherical coordinate’s height, Height error