Considering the velocity uncertainty, a modified method for computing the collision probability of two approaching objects is presented. Based on linearization of the relative motion of objects during a collision, the velocity uncertainty can be converted to equivalent covariance of relative position in the b-plane. The proposed algorithm alleviates the interference of velocity uncertainty on evaluating the risk of collision. The optimal criterion refers to minimizing collision probability following an impulsive collision avoidance maneuver. Numerical simulation is presented to prove the advantages of the proposed algorithm in collision avoidance in low Earth orbit, compared to the one regardless of the velocity uncertainty factor.


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    Title :

    Optimal Collision Avoidance Under the Velocity Uncertainty in LEO


    Contributors:
    Hua, Bing (author) / Huang, Yu (author) / Li, Zhenxing (author) / Wu, Yunhua (author) / Chen, Zhiming (author)


    Publication date :

    2018-08-01


    Size :

    184018 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English