1. 1)http://www.kddi.com/corporate/news_release/2009/1123/index.html
2. 2)http://www.jaxa.jp/projects/sat/cs/index_j.html
3. 3)http://www.jaxa.jp/projects/sat/bs/index_j.html
4. 4)T. Saito, T. Sasaki, T. Kashimoto and T. Kitsuregawa:"Cassegrain Antenna for Space Communication and Satellite Tracking", ICMCI in Tokyo, M26-4(Sep. 1964)
5. 5)http://dbnst.nii.ac.jp/pro/detail/902