发明名称 |
Satellite radiodetermination |
摘要 |
A satellite radiodetermination system comprises global navigation service (GNSS) satellites 2 such as GPS satellites, which generate GNSS ranging signals Rn, geostationary satellites 6 which retransmit ranging signals Rg generated at a navigation land earth station (NLES) 8, including augmentation data A, and medium earth orbit (MEO) satellites 10 which generate ranging signals Rm including regional augmentation data RA transmitted from a satellite access node (SAN) 14. The regional augmentation data RA is supplied by regional augmentation systems 21a, 21b. A navigation receiver 11 receives the ranging signals Rg, Rm, Rn and calculates ionospheric delay values for those ranging signals which are provided on dual frequencies. Using these ionospheric delay values, and optionally the regional augmentation data RA and the augmentation data A, the navigation receiver estimates ionospheric delay values for those ranging signals which are provided on single frequencies. The navigation receiver uses the ranging signals, corrected for ionospheric delay and errors indicated by the augmentation data A and regional augmentation data RA, to calculate position and time accurately.
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申请公布号 |
US6040798(A) |
申请公布日期 |
2000.03.21 |
申请号 |
US19960730208 |
申请日期 |
1996.10.15 |
申请人 |
INTERNATIONAL MOBILE SATELLITE ORGANIZATION |
发明人 |
KINAL, GEORGE VLADIMIR;NAGLE, II, JAMES ROBERT;SODDU, CLAUDIO;RYAN, FINTAN RICHARD |
分类号 |
G01C23/00;G01S1/00;G01S5/00;G01S5/06;G01S5/10;G01S5/14;G01S19/02;G01S19/04;G01S19/07;G01S19/11;G01S19/38;G01S19/41;G01S19/48;H04B7/19;(IPC1-7):G01S5/02;H04B7/185 |
主分类号 |
G01C23/00 |
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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