Double satellite formation collision preventing method

Abstract

Disclosed is a double satellite formation collision preventing method. If the three-dimensional distance between a main formation satellite and an auxiliary formation satellite is smaller than a firstthreshold, the auxiliary formation satellite issues an anti-collision warning sign, simultaneously sends a formation thruster jet limit sign, and immediately terminates the ongoing formation controltask; if the three-dimensional distance is smaller than a second threshold, the auxiliary formation satellite sends the formation thruster jet limit sign again, and a thruster self-locking valve of the auxiliary formation satellite is closed; if the three-dimensional distance is smaller than a third threshold, the main formation satellite issues an anti-collision warning sign, and performs pulse jet control to promote the main formation satellite away from the auxiliary formation satellite. The collision preventing method has clear level and complete systematicness, comprises measures of the auxiliary formation satellite and the main formation satellite from the coping roles, and comprises passive jet limit measures and active jet avoidance measures from the perspective of countermeasures,so the engineering implementability is strong, the method is simple and can be implemented on the satellites, the level of autonomy of the satellites is improved, the response is rapid, and the safety index is high.

Description

technical field [0001] The invention relates to the technical field of satellite formation control, in particular to a double-star satellite formation anti-collision method. Background technique [0002] As satellite formation flight technology gradually turns to engineering applications in the fields of earth observation and astronomical observation, the engineering technology system of formation control is gradually refined and deepened. Due to mission requirements and natural perturbations, the formation satellite system needs frequent formation control. The safety design of formation satellites is a necessary measure and prerequisite to ensure the safe implementation of missions. Its importance and urgency are obvious. In fact, formation safety design greatly reduces the risk of formation satellite collision through formation configuration design, control scheme planning, fault diagnosis, and stand-alone level / system level redundancy. However, due to the complexity of t...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the space environment, the possibility of unexpected approach between stars due to abnormal conditions on the star, such as mis-injection, thruster failure and leakage, etc., still exists. Therefore, it is necessary to design simple and effective formation satellites in engineering applications. Anti-active collision avoidance method

[0003] Existing anti-collision research results of formation satellites often establish complex probability calculation models to predict collision probability, or rely on GNSS receiver measurement data, often have shortcomings such as complex algorithms or simple constraints, lack of systematic overall design, etc.

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