Aerospace Corporation Findings on Optical Space‐to‐Ground Communications System Developments
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Aerospace Corporation Findings on Optical Space‐to‐Ground Communications System DevelopmentsSensonor
Richard P Welle of the Aerospace Corporation presented findings on the development of an optical space-to-ground communications system at the 31st Space Symposium in Colorado Springs, Colorado.
The AeroCube Optical Communication and Sensor Demonstration (OCSD) has as its primary payload a 10-W laser for An low-earth-orbit (LEO)-to-ground communications demonstration.The Optical Communications and Sensor Demonstration (OCSD) laser is hard-mounted to the spacecraft and beam steering is accomplished through precision pointing of the spacecraft as a whole. This capability is enabled through development of an advanced CubeSat-scale attitude-control system capable of pointing the spacecraft to within 0.2 degrees of the target.
The OSCD programme includes three flight units; a pathfinder that will fly in summer 2015 and two follow-on units that will fly in December 2015.
For robustness and power control, the spacecraft utilise a Sensonor STIM210 3-axis rate gyro, providing a random angular walk of 0.15 deg/(hour)^1/2.