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    • 7. 发明专利
    • Received signal reliability determination method, code phase error calculation method and received signal reliability determination device
    • 接收信号可靠性确定方法,代码相位误差计算方法和接收信号可靠性测定装置
    • JP2012093134A
    • 2012-05-17
    • JP2010238920
    • 2010-10-25
    • Seiko Epson Corpセイコーエプソン株式会社
    • YOSHIOKA HIROKISANO FUMIKAZUTSUCHIMOTO KAZUHIKO
    • G01S19/28G01S19/30
    • H04B17/0075H04B1/74H04B7/18513H04B7/18534H04B17/373
    • PROBLEM TO BE SOLVED: To propose a new system for determining whether a received signal after receiving a satellite signal is good or bad.SOLUTION: A received signal reliability determination method includes: a step for executing a correlation operation between a received signal after receiving a GPS satellite signal and a replica code; a step for using a peak correlation value (first correlation value) in a peak phase obtained through the correlation operation and a correlation value (second correlation value) in a phase lagging behind the peak phase by a predetermined phase to calculate ΔPL value that shows an index value of lagging distance of an indirect wave signal included in a multipath signal to a direct wave signal; a step for determining reliability of the received signal using a level of ΔPL value to a predetermined reliability determining threshold as a criterion for determination; and a step for, at this time, changing the reliability determining threshold according to a predetermined satellite group.
    • 要解决的问题:提出一种用于确定接收到卫星信号后的接收信号是好还是坏的新系统。 接收信号可靠性确定方法包括:在接收GPS卫星信号和复制码之后执行接收信号之间的相关操作的步骤; 在通过相关运算获得的峰值相位中使用峰值相关值(第一相关值)和相位值(第二相关值)的相位值(第二相关值)在滞后于峰值相位相位预定相位的步骤,以计算ΔPL值 包含在多径信号中的间接波信号与直接波信号的滞后距离的指标值; 使用以预定可靠性确定阈值的ΔPL值的电平来确定接收信号的可靠性的步骤作为用于确定的标准; 以及此时根据预定的卫星组改变可靠性确定阈值的步骤。 版权所有(C)2012,JPO&INPIT