Analysis of the Antenna Pointing Instability of a Satellite in Spin-Stabilized Injection Mode

ETRI Journal

关键词: Analysis of the Antenna Pointing Instability of a Satellite in Spin-Stabilized Injection Mode;   

Others  :  1183921
DOI  :  10.4218/etrij.94.0194.0023

【 摘 要 】

A new mathematical model to predict the beam pointing instability of a nonconservative two-body satellite system in spinning injection mode has been developed by using Newton-Euler and projection methods. Since the on-axis and null axis of the omni antenna with toroidal pattern beam form a right angle, wobbling of the antenna on-axis is measured by determining the Euler angles which represent the orientation of the satellite’s spin axis. Bacause of the complexity of the system which is a time varying, nonstationary, nonlinear dynamical system, a numerical method is used for the analysis. Computer simulation results present the effects of the mass distribution and internal mass motion on the antenna beam pointing.

   

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