Assessment and Validation of Collision "Consequence" Method of Assessing Orbital Regime Risk Posed by Potential Satellite Conjunctions

Lechtenberg, Travis F ; Hejduk, Matthew D

关键词: COLLISIONS;    PROBABILITY THEORY;    SPACE DEBRIS;    SATELLITE ORBITS;    RISK ASSESSMENT;    RISK MANAGEMENT;    DRAG COEFFICIENTS;    ATMOSPHERIC DENSITY;   

RP-ID  :  GSFC-E-DAA-TN64218

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Collision risk management theory requires a thorough assessment of both the likelihood and consequence of potential collision events. Satellite conjunction risk assessment has produced a highly-developed theory for assessing the likelihood of collision but neglects to account for the consequences of a given collision. While any collision may compromise the operational survival of a spacecraft, the amount of debris produced by the potential collision, and therefore the degree to which the orbital corridor may be compromised, can vary greatly among satellite conjunctions. Previous studies leveraged work on satellite collision modeling to develop a method to estimate whether a particular collision is likely to produce a relatively large or relatively small amount of resultant debris. The approximation of the number of debris pieces is dependent on a mass estimation process for the secondary objects utilizing the radar cross section of said object. This study examines the validity of the mass estimation process and establishes uncertainty bounds on the secondary object mass, which will be used to best approximate the possible consequences of a potential collision. This process is then applied to a large set of historical conjunctions to assess the frequency at which possible collisions may significantly augment the orbital debris environment in operational spacecraft.