http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Study on New Ku-band Data Collection Satellite to Track Avian Influenza
Isao NAKAJIMA,Hiroshi JUZOJI,Toshihiko KITANO,Masaaki KATAYAMA 한국멀티미디어학회 2011 한국멀티미디어학회 국제학술대회 Vol.2011 No.-
This paper intends to point out some problem of telemetry for wild birds and future technical expectations to prevent Avian Influenza. For medium to large migratory birds, the data collection system aboard the NOAA meteorological satellites (the ARGOS system) has been able to map their migratory routes. However, recommended C/No for Doppler shift ill be 54㏈㎐, while calculated required C/No for 400 bps data uplink is 36㏈㎐. The gap between navigation function and data communication will be almost 18 ㏈. The bird has to pay this overload. We would like to propose the next generation digital transponder that is an advanced DCS with multi beam on Ku-band to perform the onboard processing (DCS and navigation system with Doppler shift). In case of 40㏈i antenna of the spacecraft, the ground terminal with 0㏈m RF-output and 2.25㏈i antenna (0.5㎝ in size) can transmit upto 50 bps with BPSK. This terminal attached with a leg of a bird will be suitable for a dove or a gull in size.