Analysis of the impact of evolution of sun-synchronous orbits in terms of use of spacecraft for remote sensing of the Еarth

The article gives a brief analysis of the influence of disturbing factors on the dynamics of the sun-synchronous orbit. It is shown that the result of the displacement of the local average solar time from the initial value, the usage time of the spacecraft for its intended purpose is greatly reduced. The long term existence of the spacecraft to ensure that minimal changes in the lighting conditions of the route of flight is possible in two ways. The first is due to the periodic adjustments of the inclination of the plane of the sun-synchronous orbit and maintaining medium honeycomb orbit. Second – due to the choice, formation and maintenance of sustainable, sun-synchronous orbit, which provides a maximum time interval of use of the spacecraft for its intended purpose without carrying out the correction of the inclination of the orbital plane.