发明名称 |
METHOD FOR AUTOMATICALLY REDUCING ORBIT-RECEIVED CARRIER ACQUISITION AND TRACKING THRESHOLDS |
摘要 |
A method for automatically reducing carrier acquisition and tracking thresholds for carriers received in orbit by a receiver accessing an orbital navigator inside or outside the receiver, wherein said receiver comprises at least one phase loop. The phase loop is used for carrier acquisition and/or tracking and 'pushed' by a fine speed aid, and compensates for the error between the actual speed and the computed speed. The carrier Doppler frequency search is carried out around a frequency prediction maintained by the fine speed aid from the orbital navigator.
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申请公布号 |
WO9734162(A1) |
申请公布日期 |
1997.09.18 |
申请号 |
WO1997FR00424 |
申请日期 |
1997.03.11 |
申请人 |
CENTRE NATIONAL D'ETUDES SPATIALES;ISSLER, JEAN-LUC |
发明人 |
ISSLER, JEAN-LUC |
分类号 |
G01S1/00;G01S5/02;G01S19/09;G01S19/14;G01S19/26;G01S19/29;H03L7/10;H04B7/01;(IPC1-7):G01S5/14 |
主分类号 |
G01S1/00 |
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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