• 专利标题: METHODS, DEVICES AND RECEIVERS FOR SATELLITE SIGNAL ACQUISITION
  • 申请号: US16210915
    申请日: 2018-12-05
  • 公开(公告)号: US20190219707A1
    公开(公告)日: 2019-07-18
  • 发明人: Min Xu
  • 申请人: ComNav Technology Ltd.
  • 优先权: CN201711276797.8 20171206
  • 主分类号: G01S19/24
  • IPC分类号: G01S19/24 G01S19/27
METHODS, DEVICES AND RECEIVERS FOR SATELLITE SIGNAL ACQUISITION
摘要:
The present invention relates to a method for acquiring satellite signals. The method utilizes the predictability of the first two words of each sub-frame of the navigation message, by controlling the acquisition time of the intermediate frequency data and the PN code, acquiring corresponding intermediate frequency data and PN code from the acquisition time, processing the intermediate frequency data and the PN code to determine whether the satellite signal is acquired, during the acquisition processing and determination process, the navigation message peeling operation is performed using the predictability of the first two words of each sub-frame of the satellite navigation message and PN code, in this way, extending the time of coherent integration is achieved, and thereby improves the acquisition sensitivity.
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