Abstract
The study presents the results of creating simulated satellite imagery of lengthy territories with complex configuration using data from satellites with optical-electronic scanners of ultrahigh spatial resolution. The article attempts to clarify the feasibility of one-orbit imagery of a given lengthy object, taking into account the existing limitations on the values of pointing angles and satellite angular velocities based on the results of modeling the system of automatic satellite attitude program control during the process of imagery.
Highlights
1) a narrow swath width, which does not allow to take images of arbitrarily-spaced lengthy territories in one-orbit period; 2) a small pixel size of CCD photocells, which does not allow to make images of low-contrast objects, as well as take pictures from neighboring orbits at low angles of the Sun
To cover a lengthy object with an arbitrary configuration, it is necessary to take several images from different orbits, which takes from 3 days to 3 weeks
- some satellites allow to take images of arbitrarily oriented straight-line lengthy territories (Fig. 1, in the middle), choosing the most optimal scanning direction;
Summary
When solving a number of economic and scientific problems, there arose a need for fast satellite imagery of lengthy territories with complex configuration (highways and railroads, oil and gas pipelines, border areas, navigable waterways, coastlines, etc.) [1-6]. For this purpose ultrahigh resolution remote sensing satellites are commonly used. To cover a lengthy object with an arbitrary configuration, it is necessary to take several images from different orbits, which takes from 3 days to 3 weeks It may take even longer time due to cloudiness, which is unacceptable for most tasks
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