Invention Application
US20030118086A1 Method for performing reacquisition in a positioning receiver, and an electronic device 有权
用于在定位接收机和电子设备中执行重新获取的方法

  • Patent Title: Method for performing reacquisition in a positioning receiver, and an electronic device
  • Patent Title (中): 用于在定位接收机和电子设备中执行重新获取的方法
  • Application No.: US10325218
    Application Date: 2002-12-20
  • Publication No.: US20030118086A1
    Publication Date: 2003-06-26
  • Inventor: Samuli PietilaHarri Valio
  • Applicant: Nokia Corporation
  • Applicant Address: null
  • Assignee: Nokia Corporation
  • Current Assignee: Nokia Corporation
  • Current Assignee Address: null
  • Priority: FI20012559 20011221
  • Main IPC: H04B001/707
  • IPC: H04B001/707 H04B007/185
Method for performing reacquisition in a positioning receiver, and an electronic device
Abstract:
The invention relates to a method for performing reacquisition in a positioning receiver (PR), in which at least one spread spectrum modulated signal is received. In the positioning receiver (PR), a reference signal is formed by using a reference code corresponding to the code used in the modulation of the signal to be received, and a correlation is made between the received signal and the reference signal. Said correlation is made in at least a first and a second part, and different correlation times are used in said first part and in said second part. The invention also relates to an electronic device (ED) comprising a positioning receiver (PR). The positioning receiver (PR) comprises means (1-6) for receiving at least one spread spectrum modulated signal, means (13, 14, 15) for forming a reference code corresponding to the code used in the modulation of the signal to be received, and means (8) for performing a correlation between the received signal and the reference signal for reacquisition of the signal to be received. Said means (8) for making the correlation comprise at least first correlating means (20a, 20b; 22a, 22b; 24a, 24b; 26a, 26b) and second correlating means (21a, 21b; 23a, 23b; 25a, 25b; 27a, 27b) for making the correlation in at least first and second parts, and means (20a, 21a; 20b, 21b) for using different correlation times in said at least first and second parts.
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