发明名称 |
Efficient high latitude service area satellite mobile broadcasting systems |
摘要 |
A satellite audio broadcasting system for mobile and fixed receivers at or near the earth's surface in geographic service areas at latitudes above about 30 degrees N or below about 30 degrees S include a satellite constellation of two or more satellites, each in its own geosynchronous orbit, with each orbit having orbital parameters that provide elevation angles of more than 35 degrees throughout the service area.
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申请公布号 |
US6223019(B1) |
申请公布日期 |
2001.04.24 |
申请号 |
US19980082489 |
申请日期 |
1998.05.20 |
申请人 |
SIRIUS SATELLITE RADIO INC. |
发明人 |
BRISKMAN ROBERT D.;NELSON ROBERT A. |
分类号 |
H04B7/185;H04B7/19;H04B7/195;H04H40/90;(IPC1-7):H04B7/185 |
主分类号 |
H04B7/185 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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