Interconverting Models of Gray Matrix and Geographic Coordinates Based on Space Analytic Geometry
- 1 College of Science, Guilin University of Technology, Guilin, China
- 2 College of Science, Guilin University of Technology, Guilin, China
- 3 College of Science, Guilin University of Technology, Guilin, China
Abstract
With the progress and development of science, the synchronous satellite as the high-tech product is taken something more and more seriously by all countries. Converting gray value matrix into geographic coordinates becomes more and more important. This paper establishes the models for interconvert ing row and column of gray value matrix which detected by the infrared detectors on synchronous satellites and geographic coordinates based on the related theorems and properties of space analytic geometry . We draw satellite cloud image with the data of gray matrix in MATLAB, convert coastline’s latitude and longitude coordinates into row and column coordinates of a gray matrix according via these models when the sub-satellite point’s row and column coordinates and geographic coordinates are given, then add coast-lines to the original satellite cloud image with the transformation data. We find that coast-lines completely match with the bump characteristics of satellite cloud image, and that verify the correctness of the models.
- Q. S. Zhang, “Method of Static Meteorological Tatellite Cloud Image Landmark Navigation,” China Academic Journal Electronic Publishing House, Beijing, 1984, pp. 14-20.
- G. H. Wang, B. Chen and W. P. He, “Research of Longitude and Latitude of AVHRR 2048 Based on Polar Coordinate Transformation,” Journal of Qingdao University, Vol. 16, No. 3, 2003, pp. 45-48.
- J. J. Zhang, H. Y. Liang, X. F. Chen, X. F. Gu, T. Yu and H. B. Ge, “Transformation from Image Panel Coordinate to Latitude and Longitude Coordinate,” Geospatial Information, Vol. 8, No. 1, 2010, pp. 63-66.
- M. L. Dong and Q. Zhou, “Transforming Relationship between Cartesian Coordinates and Geographical Coordinates and Error Analysis,” Marine Forecasts, Vol. 28, No. 2, 2011, pp. 48-54.
- G. P. Gerdan and R. E. Deakin, “Transforming Cartesian Coordinates X, Y, Z to Geographical Coordinates φ, λ, h,” The Australian Surveyor, Vol. 44, No. 1, 1999, pp. 55-63.
- D. Teng, P. Wang, Y.-G. Che and D. Wang, “Realization Method of Electronic Chart Based on Coaseline with MATLAB7.0,” Laser Journal, Vol. 31, No. 5. 2010, pp. 10-11.