Medium-orbit elliptical orbit remote sensing satellite constellation design method

Abstract

The invention relates to a method for designing a medium-orbit elliptical orbit remote sensing satellite constellation, which comprises the following steps of: S1, designing an elliptical frozen orbit of a medium-orbit elliptical orbit remote sensing satellite by utilizing the characteristic that the elliptical orbit of the medium-orbit elliptical orbit remote sensing satellite stays at an apogee for a long time; the method specifically comprises the following steps: S11, selecting an orbit inclination angle i; s12, selecting perigee height hp and apogee height ha; s13, selecting a perigee argument omega; s14, selecting the right ascension omega of the ascending node; s2, aiming at the characteristic that the elliptical orbit of the medium-orbit elliptical orbit remote sensing satellite is a non-uniform orbit with high perigee movement speed and low apogee movement speed, designing a special Walker constellation of the medium-orbit elliptical orbit remote sensing satellite; the method specifically comprises the following steps: S21, calculating a mean anomaly of a satellite in an orbital plane; s22, calculating the number s of satellites in each orbital plane; and S23, calculating the plane anomaly difference of the adjacent orbital planes. The method has the advantages that the method is oriented to optical remote sensing satellites, targets in key areas are highly revisited, and hotspot targets are monitored with high time resolution and high spatial resolution.

Description

【Technical field】 [0001] The invention relates to the field of spaceflight technology, in particular to a method for designing a constellation of a medium-orbit elliptical-orbit remote sensing satellite. 【Background technique】 [0002] Remote sensing satellites can quickly and effectively obtain global surface changes, and are widely used in land surveying and mapping, meteorological monitoring, ocean and coast surveying and mapping and other fields. The main development goal of remote sensing satellites is higher spatial and temporal resolution. The orbit determines the position distribution of satellites in space, which is inseparable from the imaging resolution and width of optical remote sensing satellites. Design optimization is of great significance. [0003] Circular orbit satellites have unique advantages such as global coverage and uniform ground resolution. However, when imaging key areas of interest, circular orbits are difficult to ensure rapid revisit of target...

AI Technical Summary

Problems solved by technology

[0003] Circular orbit satellites have unique advantages such as global coverage and uniform ground resolution, but when imaging key areas of interest, circular orbits are difficult to ensure rapid revisit of targets in key areas of interest

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