By Lei Chen, Xian-Zong Bai, Yan-Gang Liang, Ke-Bo Li
This e-book introduces readers to the appliance of orbital info on house gadgets within the contexts of conjunction evaluation and house scenario research, together with theories and methodologies. It addresses the most issues curious about house item conjunction review, reminiscent of: orbital mistakes research of house items; shut strategy research; the calculation, research and alertness of collision likelihood; and the great evaluate of collision danger. additionally, chosen issues on house scenario research also are offered, together with orbital anomaly and house occasion research, and so forth.
The ebook deals a invaluable advisor for researchers and engineers within the fields of astrodynamics, area telemetry, monitoring and command (TT&C), house surveillance, house situational understanding, and area particles, in addition to for graduates majoring in flight car layout and comparable fields.
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Extra info for Orbital Data Applications for Space Objects: Conjunction Assessment and Situation Analysis
S. put forward CADET to analyze the statistical properties of linear or nonlinear systems with random errors. This method is featured with the characteristics of time saving, high efﬁciency, and high reliability [5–8]. The basic concept of CADET is: ﬁrstly, we conduct the statistical linearization on the nonlinear system based on the describing function theory; then, work out the mean values of the random state variables and the covariance propagation differential equation of the linearized system based on CADET.
The program structures and methods of conjunction assessment and evasion maneuver systems of aerospace organizations are different. But as developed by inherent principles of the conjunction assessment and evasion maneuver, they share consistent basic frameworks and general procedures. (1) Conjunction assessment and collision avoidance maneuver systems of major space agencies. A. S. space shuttle in an early stage was adopted with the Box method . To get rid of errors caused by using the Box method, the National Aeronautics and Space Administration, (NASA) started to apply Pc based method in the early 1990s.
One of the major problems for object monitoring and space object orbital data application is acquiring the orbital propagation error covariance information of space object and knowing the precision of that information. In practice, we usually use the inner ﬁtting precision and outer comparing precisions to deﬁne the precision of orbital determination . Considering the two assessment methods and the actual engineering conditions, the analytical methods elaborated in the domestic and foreign literature are error extrapolation based on orbital models, comparison with high-precision orbital prediction results, and error analysis based on historical 28 2 Orbital Prediction Error Propagation of Space Objects orbital data in allusion to different objects and sources of their orbit information.
Orbital Data Applications for Space Objects: Conjunction Assessment and Situation Analysis by Lei Chen, Xian-Zong Bai, Yan-Gang Liang, Ke-Bo Li