光衛星通信用単一検出器光ビーム制御方式における信号検出回路の検討

概要

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Optical communication systems for intersatellite links require optical beam tracking errors at less than microradian levels. To achieve this requirement in severe space environments, we have proposed a new tracking technique using single detector systems instead of the well-known quadrant detector ones. This paper provides formulation and numerical results of a technique for such single detector systems, and also describes the design considerations for the tracking error detection circuits in order to evaluate the performance of our technique with respect to its accuracies on bread-board levels. The key components of the circuits such as band-pass filters using operational amplifiers, and a synchronous detection circuit are mainly discussed. The second order band-pass trasnsfer function approximation, which can be directly derived by making an adequate band - pass transformation to characteristic roots of a low-pass filter, is presented. Based on this result, some basic design examples for the circuit are shown.
東海大学の論文
1999-03-30