Improving the Capability of Ground Station with Software Defined Radio and Ground Station Network

• Main Authors: Chiu-Teng Tsai, 蔡秋藤
• Other Authors: Jyh-Ching Juang
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/11982731449469967570

碩士 === 國立成功大學 === 電機工程學系碩博士班 === 95 === Because of lower cost and shorter developing duration, cubesats are widely used for space engineering education and earth observation. As many cubesats will operate in orbit, the closeness in spatial and spectral separation between different cubesats may render problems for ground stations in satellite tracking. We implement a ground station receiver with software defined radio (SDR) technique to solve these problems. The receiver is flexible in frequency range and with multi-channel receiving capability. Joint maximum likelihood sequence estimation algorithm is adopted to suppress co-channel interferences. Besides, we connect stations by Internet to provide larger contact probability and lower bit error rate. With these two approaches, ground stations can have better capability and improve mission performance.