发明授权
- 专利标题： Two-hop collocated satellite communications system
- 专利标题（中）： 双跳并置卫星通信系统
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申请号： US670085申请日： 1984-11-13
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公开(公告)号： US4752925A公开(公告)日： 1988-06-21
- 发明人: James D. Thompson , Harold A. Rosen , Leeor Pressman
- 申请人： James D. Thompson , Harold A. Rosen , Leeor Pressman
- 申请人地址： CA Los Angeles
- 专利权人： Hughes Aircraft Company
- 当前专利权人： Hughes Aircraft Company
- 当前专利权人地址： CA Los Angeles
- 主分类号： H04J1/05
- IPC分类号： H04J1/05 ; H04B7/15 ; H04B7/185 ; H04B7/208 ; H04B7/212 ; H04J3/06
摘要：
A two-hop communications system utilizing two collocated spacecraft (Se and Sw) and two remote intersatellite exchange (RISE) means (Re and Rw) provides for communications between ground stations located in two or more defined subregions. Each satellite includes wide band transponders for relaying ground station transmissions to the RISEs. The RISEs convert first hop frequency division multiplexed (FDM) signals to time division multiplexed (TDM) for the second hop. Signals are coded by frequency, polarization and direction so as to avoid loss of bandwidth due to the two-hop approach.
公开/授权文献
- US5668693A Method of monitoring a contactor 公开/授权日：1997-09-16
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