Method for maintaining regression orbit in high-precision gravitational field based on monopulse orbit control

Abstract

The invention discloses a method for maintaining a regression orbit in a high-precision gravitational field based on monopulse orbit control. The method comprises the steps of constructing high-orderPoincare mapping, solving a multi-objective optimization function of an initial value of the regression orbit, and solving to obtain a first initial value of the regression orbit,performing orbit integration on the first regression orbit initial value to obtain an orbit state quantity,reconstructing the high-order Poincare mapping according to the orbit state quantity, and solving to obtain a nextregression orbit initial value,and determining a monopulse speed increment required by track control according to the speed difference between the track state quantity and the initial value of the next regression track, thereby realizing maintenance of the regression track in the high-precision gravitational field. According to the method, on the basis that the orbit design is used as a nominal value, the orbit speed states in the adjacent regression periods are connected by applying the speed pulse at the ascending node of the equator, so that high-precision orbit control is realized, and the actual sub-satellite point orbit of the satellite deviates from the nominal position by a distance within a threshold range set by a user.

Description

technical field [0001] The invention belongs to the technical field of satellite mission analysis and orbit design, in particular to a method for maintaining a homing orbit in a high-precision gravitational field based on monopulse orbit control. Background technique [0002] As a special mission application orbit of the low-Earth orbit, the return orbit is widely used in missions such as remote sensing of the earth and reconnaissance and surveying due to the characteristics of complete repetition of sub-satellite point trajectories at a certain time interval. [0003] Orbit control technology is an important part of satellite mission analysis and orbit design technology. Due to the perturbation in the space environment, especially non-conservative forces such as atmospheric drag will cause the drift of the sub-satellite point trajectory. If there is no necessary orbit maintenance control, the long-running homing orbit will lose its homing characteristics in the actual spac...

AI Technical Summary

Problems solved by technology

For any space mission using a return orbit, one of the main problems is that when the spacecraft deviates from the reference orbit to a certain extent, periodic control needs to be applied to return to the return orbit condition, otherwise the deviation will increase and the mission will fail

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