Abstract
This paper presents mathematical models describing extended objects with complex configuration used for planning satellite imagery with optoelectronic scanners of submeter spatial resolution. The most efficient spline approximation methods were used for mathematical description of extended objects with complex configuration. The proposed method ensures obtaining maximum coverage of the extended object in one-orbit period by choosing an appropriate spline smoothing coefficient, shifting and turning coverage contour. The results of computer simulation of extended object imagery are given, taking into account the swath width of the imaging instrument, the required scanning direction and limitations on retargeting angles range and satellite angular velocities.
Highlights
When planning satellite imagery of lengthy territories with complex configuration which are not located in the satellite-covered area, there is a problem connected with a narrow swath width of ultra-high resolution optical scanners, which does not allow to take images of arbitrarily-spaced lengthy territories in one-orbit period [1, 2]
The aim of the study is to develop mathematical models describing extended objects in order to improve the efficiency of satellite imagery of lengthy territories having complex configuration with optoelectronic scanners of submeter spatial resolution
Computer simulation of satellite imagery performed for various types of on-board scanners, space imagery modes and types of extended objects with complex configuration have confirmed high efficiency of the technique proposed
Summary
When planning satellite imagery of lengthy territories with complex configuration (borders, roads, rivers, coastlines, etc.) which are not located in the satellite-covered area, there is a problem connected with a narrow (usually from 5 to 20 km) swath width of ultra-high resolution optical scanners, which does not allow to take images of arbitrarily-spaced lengthy territories in one-orbit period [1, 2]. Even double-orbit imagery may require several days in the absence of clouds and limitations on the minimum scanner angles (depending on the scanner's swath width and the retargeting angles range). It may take even longer time due to cloudiness, which is unacceptable for most tasks. To cover a lengthy object with complex configuration, it is necessary to take images from different orbits
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