发明名称 |
Low earth orbit satellite providing navigation signals |
摘要 |
Low earth orbit (LEO) satellites are used to provide navigation signals. In one embodiment, a method of providing a LEO signal from a LEO satellite includes providing a plurality of transmit channels over a plurality of transmit slots. The transmit channels comprise a set of communication channels and a set of navigation channels. The method also includes generating a first pseudo random noise (PRN) ranging overlay corresponding to a navigation signal. The method further includes applying the first PRN ranging overlay to a first set of the navigation channels. In addition, the method includes combining the communication channels and the navigation channels into a LEO signal. The method also includes broadcasting the LEO signal from the LEO satellite.
|
申请公布号 |
US7579987(B2) |
申请公布日期 |
2009.08.25 |
申请号 |
US20070749627 |
申请日期 |
2007.05.16 |
申请人 |
THE BOEING COMPANY |
发明人 |
COHEN CLARK E.;WHELAN DAVID A.;BRUMLEY ROBERT W.;GUTT GREGORY M.;FERRELL BARTON G. |
分类号 |
G01S1/00;G01S19/07;G01S19/11;G01S19/12;G01S19/31 |
主分类号 |
G01S1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|