发明申请
US20110199262A1 ESTIMATING FREQUENCY OF A GNSS ENABLED DEVICE BASED ON TIME STAMPS
有权
基于时间戳估计GNSS使能装置的频率
- 专利标题: ESTIMATING FREQUENCY OF A GNSS ENABLED DEVICE BASED ON TIME STAMPS
- 专利标题(中): 基于时间戳估计GNSS使能装置的频率
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申请号: US12748050申请日: 2010-03-26
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公开(公告)号: US20110199262A1公开(公告)日: 2011-08-18
- 发明人: Jeyhan Karaoguz , Charles Abraham , Mark Buer , David Garrett , David Albert Lundgren , David Murray
- 申请人: Jeyhan Karaoguz , Charles Abraham , Mark Buer , David Garrett , David Albert Lundgren , David Murray
- 主分类号: G01S19/25
- IPC分类号: G01S19/25
摘要:
A GNSS enabled device that is communicatively coupled to a network, receives time stamps via the network. The time stamps are generated based on reference clock signals within the network. GNSS receiver clock signal frequency may be adjusted based on the time stamps. When GNSS satellite signals and/or SRN signals are not available, the time stamps enable synchronization with GNSS satellites. Network clock signals and/or time stamps may be generated by an access point, a DSL modem, a cable modem and/or a primary reference clock within the network. A series of time stamps may be utilized for adjusting frequencies. Clock signals may be generated for adjusting frequencies based on a comparison between time stamps and oscillator or mixer output. Clock signals are generated for baseband, intermediate and/or RF frequency signal processing. GNSS satellite signals may be demodulated, correlated with a pseudonoise code sequence and/or synchronized based on the time stamps.
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