Unpowered constellation keeping control method for near-earth satellite

Abstract

The invention relates to a constellation keeping control method for a near-earth satellite under an unpowered condition, and belongs to the field of spacecraft manufacturing and spacecraft engineeringapplication. The traditional satellite constellation keeping control method is characterized in that a thrust device is arranged for each satellite in the constellation; the operation speed of the satellite is changed through the power generated by the thrust device when the thrust device is operated, so that constellation keeping control can be achieved. And installing the thrust device needs tooccupy the volume, the weight and the energy consumption of the satellite, thereby increasing the cost. The invention discloses a method for achieving constellation keeping control without installingthe thrust device, which utilizes the characteristic that the residual atmospheric resistance in near-earth space reduces the operating speed of the satellite, adjusts a windward area in the operating process of the satellite, and ensures that the satellite obtains a specific operating speed. Through the accumulation of time, the relative positions of all satellites in an orbital plane finally can be controlled to meet the design requirements under the unpowered condition, and the constellation keeping control is finished. The key point of the constellation keeping control method is that theorbit control can be achieved by obtaining the resistance change by adjusting the attitude of the satellite, and the thrust device is omitted, so that the design of the satellite is simplified, and the manufacturing cost of the satellite is reduced.

Description

technical field [0001] The invention belongs to the application fields of spacecraft manufacturing and spacecraft engineering, and relates to a method for realizing the constellation maintenance control of near-earth satellites under the condition of no power. Background technique [0002] In order to obtain good ground coverage and observation effects, the near-Earth satellite system usually consists of several, dozens or even hundreds of satellites. Taking remote sensing satellites as an example, a system composed of multiple satellites can obtain more earth observation images within a certain period of time, or quickly obtain images of any point on the earth within a short period of time. After these satellites are put into orbit, they can be distributed on one orbital plane, or on multiple orbital planes, and multiple satellites are distributed on each orbital plane. Under normal circumstances, the best application effect can be obtained by the uniform distribution of s...

AI Technical Summary

Problems solved by technology

For large satellites, due to sufficient space, weight and energy margin, these requirements can be well met. For small satellites, even micro-nano satellites, the satellite itself is small, and its size, weight and power consumption are limited. Active propulsion devices will bring complexity to satellite design and increase satellite production costs, and may not even be feasible under certain circumstances

Images