发明名称 |
Estimating GPS reference frequency drift from PDC-handset VCO-bursts |
摘要 |
A combination mobile phone and navigation satellite receiver comprises a circuit for correcting GPS receiver reference frequency drift by using VCO burst information periodically received by a PDC handset. A corrected GPS receiver reference frequency drift then enables faster initialization and stable operation of the position solutions made available to users. A GPS numeric controlled oscillator (NCO) receives a PDC handset VCO sample.
|
申请公布号 |
US2005048941(A1) |
申请公布日期 |
2005.03.03 |
申请号 |
US20030650383 |
申请日期 |
2003.08.27 |
申请人 |
ERIDE, INC;SEIKO EPSON CORPORATION |
发明人 |
MCBURNEY PAUL W. |
分类号 |
G01C21/06;G01S1/00;G01S5/00;G01S19/25;H04B7/26;(IPC1-7):H04B1/06;H04B7/00 |
主分类号 |
G01C21/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|