One would potentially expect some significant clustering of events in time as a result of satellite breakups, but the presence of Poisson statistics indicates that such debris disperse rapidly with respect to Haystack's very narrow radar beam. Interestingly, during the fiscal year 2003 observations with the Haystack radar in a fixed staring mode, there are no statistically significant deviations observed from that expected with Poisson statistics, either independent or dependent of altitude or inclination. Poisson statistics form the basis of many orbital debris models but the statistical basis of these models has not been clearly demonstrated empirically until now. This distribution is a special case of the Erlang distribution that is used in estimating traffic loads on telecommunication networks. For Poisson statistics, the probability distribution of the time interval between events is shown to be an exponential distribution. This is done by analyzing the time interval between detection events. Horstman, MattĪ convenient and powerful method is used to determine if radar detections of orbital debris are observed according to Poisson statistics. On the Determination of Poisson Statistics for Haystack Radar Observations of Orbital Debris Statistical orbit determination enables us to obtain…
The tracking of space objects requires frequent and accurate monitoring for orbit maintenance and collision avoidance using methods for statistical orbit determination. The current Situational Space Awareness (SSA) is faced with a huge task of tracking the increasing number of space objects. Information Measures for Statistical Orbit DeterminationĮRIC Educational Resources Information Center
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