| 天气雷达回波图象数据压缩方法 |
| |
| 引用本文： | 王国华 马启光,葛润生.天气雷达回波图象数据压缩方法[J].应用气象学报,1988,3(2):151-158. |
| |
| 作者姓名： | 王国华 马启光 葛润生 |
| |
| 作者单位： | 1.北京工业学院
(王国华，马启光)，气象科学研究院中尺度气象研究所(葛润生) |
| |
| 摘 要： | 文中介绍了一种天气雷达回波图象数据压缩方法，采用微分尖锐化的方法确定回波强度各分层的廓线，再用最小距离法和动态坐标追踪法对廓线点进行排序，并对数据进一步压缩。对回波图象数据压缩之前，应用掩膜滤波法对回波区边缘平滑，使保持原图的主要结构特征。使用这种数据压缩方法，压缩后的数据仅为原图象数据的7%左右，即数据压缩率为93%。
|
A Data Pressing Method of Radar Echo |
| |
| Affiliation: | 1) (Beijing Institute of Technology); 2) (Academy of Meteorological Science, SMA) |
| |
| Abstract: | A pressing method of radar data is introduced in this paper. As the value changed sharply near the borders of echo intensity layers, the isopleth is drawn out by differential processing. Actual process is made for several times. Each time the layer thresholds are altered to keep a certain interval and the quality of the isopleths is highly improved. The points on the isopleth are lined rapidly by comparing the sequence of distance among points and the intersected isopleth is corrected by tracing against a change coordinate. The echo border is filtered by diaphragm method. After filtered the distorted borders are mended and echo structure is more obvious. Optional layer can be filtered and others are kept unchanged. By the method mentioned above only 7 percent original data is used to store or display an echo chart. The pressing rate achieved 93 percent |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《应用气象学报》浏览原始摘要信息 |
|
点击此处可从《应用气象学报》下载全文 |
