北极区域极射赤平投影比较研究
毕业论文关键词：极射赤平投影；风云三号卫星；
MERSI；MODIS；IDL Abstract In recent years, the study of the arctic project more and more, more and more countries actively involved in research activities on arctic affairs. China protects the arctic environment, arctic channel utilization, the arctic resources development aspects involved in the arctic. At present, in the arctic area research applications, the country's main products are using the MODIS data. But, our country also has its own satellite data, is FY3C meteorological satellite, can obtain the arctic regions of the image data. Due to the different data in the arctic is a deviation, the effect of the monitoring for later study will also produce certain effect. MODIS data is the most widely used products, therefore, We will use our FY3C-MERSI data comparing with MODIS data. The satellite receiving ground information is longitude and latitude information, need to receive the longitude and latitude information through the projection into coordinate information to compare. Projection method of MODIS data was stereographic polar projection, stereographic polar projection in polar research obtained good results. This paper adopts stereographic polar projection. Frist, using IDL custom projection function library, transforms the longitude and latitude information projection of MERSI data into coordinates information, based on the bilinear interpolation coordinates information, and compared with the MODIS data. Through the comparison, we can draw the precision of satellite data in our country, on this basis, the analysis of the data applied in the arctic area.
Key words ： Stereographic Polar projection ； Geostationary meteorological satellite；MERSI；MODIS；IDL
目录
摘要 I
Abstract II
1 引言 . 1
1.1 研究背景 1
1.2 国内外研究现状 2
1.3 研究内容与目的 3
2 研究区域与数据 4
2.1 研究区域的概括 4
2.2 研究数据 5
2.2.1 美国 MODIS 数据 5
2.2.2 风云 3号卫星MERSI数据 . 7
3 投影原理与算法实现 . 9
3.1 投影原理 9
3.2 插值原理 10
3.3 算法语言 12
3.3.1 语言介绍 . 12
3.3.2 算法实现 . 12
4 结果与分析 . 16
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