Improvement in University Satellite Operation Using Ground Station Network

Abstract

The development of Ground Station Network (GSN) was proposed to achieve advanced operation for nano-satellites by the collaboration of university ground stations. GSN is a network of ground stations of universities and colleges and member stations are controlled remotely via the Internet. The service of the receiving station network was used in cubesat operation. GSN in receiving station service showed improvement of the amount of downlink data. The international network with collaboration of ground stations was carried out. The status data and picture data were acquired during the hand-over operation. As the result of international network operation, the collaborative operation with ground station abroad improves visible time and operation data received per one day. Doppler shift was measured using an amateur radio. The maximum difference of predicted frequency and measured frequency was detected for each pass. The correction method of TLE was tested using the frequency difference. The measurement result with corrected TLE from old TLE showed good agreement to the result with the new TLE.