干旱区生态环境知识资源中心(Arid): 宁夏干旱区强对流降水过程雷达图像纹理特征分析

Arid

	宁夏干旱区强对流降水过程雷达图像纹理特征分析
其他题名	Texture Analysis on Weather Radar Images of Severe Convective Precipitation in Arid Region of Ningixa
	胡文东 1; 李艳春 1; 郑广芬 1; 丁建军 1; 杨有林 1; 孙银川 2
ISSN	1000-694X
出版年	2007
卷号	27 期号:2 页码:331-336
中文摘要	使用银川新一代天气雷达体扫数据，进行极坐标向平面直角坐标系的变换，计算得到了宁夏中北部气候干旱区2004-2005年较强对流降水51次过程中的组合反射率图像资料。利用灰度共生矩阵，获取了角二阶矩、熵、对比度、相关、差值倒数矩等图像纹理参数的具体数值分布。分析结果表明：宁夏中北部气候干旱区强对流降水过程中，雷达组合反射率图像与中国南方相比，数值具有明显的差异。新一代天气雷达组合反射率资料遥感图像的纹理结构不够明显，相对纹理清晰度不高，仅有较弱、较细的纹理，图像较为平滑、稳定，表明对应的降水云团比较均一。
英文摘要	Based on the volume scan data of Yinchuan New Generation Weather Radar about severe convective precipitation in 2004-2005, the composite reflectivity images in polar coordinates were transformed into ones in plane right angle coordinates. With the gray level cooccurrence matrix, the distribution of texture parameters, such as angle second moment, contrast, correlation, entropy and inverse difference moment, etc were obtained. Results showed that there are obvious differences of texture between the remote sense images of precipitation in Ningxia and that in south China. In the radar images of severe convective precipitation in arid region, north mid part of Ningxia, the texture is not as distinct as that in south China, and the definition is not very clear, the texture is weaker and thinner, the images are smoother and stable than that of south China, the features indicate that the clouds of severe convective precipitation in the arid region are more homogeneous.
中文关键词	干旱区 ; 强对流 ; 天气雷达 ; 图像 ; 纹理特征
英文关键词	arid area severe convection weather radar image texture analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:2720287
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221807
作者单位	1.宁夏气象防灾减灾重点实验室, 宁夏气象防灾减灾重点实验室, 银川, 宁夏 750002, 中国; 2.宁夏气象台, 银川, 宁夏 750002, 中国
推荐引用方式 GB/T 7714	胡文东,李艳春,郑广芬,等. 宁夏干旱区强对流降水过程雷达图像纹理特征分析[J],2007,27(2):331-336.
APA	胡文东,李艳春,郑广芬,丁建军,杨有林,&孙银川.(2007).宁夏干旱区强对流降水过程雷达图像纹理特征分析.,27(2),331-336.
MLA	胡文东,et al."宁夏干旱区强对流降水过程雷达图像纹理特征分析".27.2(2007):331-336.