Model for calculating the speed of delivery of remotely sensed Earth observation information

Abstract

In full accordance with the observed intensive growth of the global market for products and services based on space-based information provided by space-based Earth observation assets, satellite missions and space-based Earth remote sensing technologies are currently undergoing rapid development. Space images are important for monitoring emergency situations: floods and inundations, forest fires and earthquakes. A wide range of Earth remote sensing satellites equipped with many types of target equipment are used to obtain all that information. In the course of developing the design of a space-based operational data transmission system, which is based on a heterogeneous orbital constellation using a network of relay satellites, it is necessary to model the ballistic structure of the Earth remote sensing orbital constellation. The efficiency of Earth remote sensing information delivery to consumers should be considered under various options of building a network of relay satellites, taking into account the characteristics of existing and prospective high-speed radio lines of satellites. During modeling it is also necessary to take into account that in the case of a single repeater satellite the best picture on the minimum times of information delivery efficiency from the Earth remote sensing satellite is observed for a low-orbit repeater satellite, and the best picture on the maximum times of information delivery efficiency from the Earth remote sensing satellite is observed for a geostationary repeater satellite. An algorithm for model formation of an orbital constellation of different types of satellites with given initial ballistic characteristics is created. The presented algorithm consists in sequential calculation of initial conditions of reference satellites for each plane, and then, according to the initial conditions of the reference satellite, calculation of initial conditions of other satellites of the given plane.