沙漠与绿洲气象2012，Vol.6Issue(3)：8-13,6.
雷达波束传播路径精确定位与地形对波束的阻挡计算
Precise Positioning in Radar Beam Spread Path and Calculating the Rate of the Beam Blocked by Terrain
摘要
Abstract
When weather radar was used for low elevation observation,the terrain fluctuation will cause the data distortion at and behind the observing site on the radar beam path.Based on the method of equivalent earth radius and the ray traced on the radar beam path,precise positioning in the radar beam spread path is derived.And then,the calculation method of the rate of the radar beam blocked by terrain was given.When calculating,two conditions,the incidence block and the block before incidence,should be considered.According to the elevation raster data with the 3 seconds geographical resolution around Wuhan,weather radar beam blocked rates in spherically stratified atmosphere were calculated.关键词
天气雷达/精确定位/地形阻挡/波束阻挡率/射线追踪法Key words
weather radar/precision positioning/terrain block/beam blocked rate/ray tracing method分类
信息技术与安全科学引用本文复制引用
王翔,沈铁元,杨洪平,彭涛..雷达波束传播路径精确定位与地形对波束的阻挡计算[J].沙漠与绿洲气象,2012,6(3):8-13,6.基金项目
沙漠气象研究基金Sqj2011001 （）
公益性行业（气象）专项GYHY200806002资助 （）
