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    • 3. 发明申请
    • DGNSS CORRECTION FOR POSITIONING
    • DGNSS定位校正
    • US20100149026A1
    • 2010-06-17
    • US12619153
    • 2009-11-16
    • Dominic Gerard FarmerIe-Hong LinRayman Wai Pon
    • Dominic Gerard FarmerIe-Hong LinRayman Wai Pon
    • G01S19/41
    • G01S19/05G01S19/25G01S19/27
    • Techniques for supporting positioning with differential corrections are described. In an aspect, differential correction for a satellite may include (i) a user differential range error (UDRE) indicating an uncertainty in a pseudo-range correction for the satellite, (ii) a UDRE growth rate, which may be a scaling factor for the UDRE, and (iii) a time of validity for UDRE growth rate, which may be a time unit used to apply the scaling factor. In one design, a terminal may send a request message to ask for differential correction information and may receive a response message. The terminal may obtain differential correction (e.g., a UDRE, a UDRE growth rate, and a time of validity for UDRE growth rate) for each of at least one satellite from the response message. The terminal may derive a location estimate for itself based on the differential correction for each satellite.
    • 描述用于支持差分校正定位的技术。 在一方面,卫星的差分校正可以包括(i)指示卫星的伪距校正中的不确定性的用户差分范围误差(UDRE),(ii)UDRE增长率,其可以是用于 UDRE,以及(iii)UDRE增长率的有效期,可能是用于应用比例因子的时间单位。 在一种设计中,终端可以发送请求消息来请求差分校正信息,并且可以接收响应消息。 终端可以从响应消息中获得至少一个卫星中的每一个的差分校正(例如,UDRE,UDRE增长率和UDRE增长率的有效时间)。 终端可以基于每个卫星的差分校正导出其自身的位置估计。
    • 5. 发明授权
    • DGNSS correction for positioning
    • DGNSS定位校正
    • US08259008B2
    • 2012-09-04
    • US12619153
    • 2009-11-16
    • Dominic Gerard FarmerIe-Hong LinRayman Wai Pon
    • Dominic Gerard FarmerIe-Hong LinRayman Wai Pon
    • G01S19/41
    • G01S19/05G01S19/25G01S19/27
    • Techniques for supporting positioning with differential corrections are described. In an aspect, differential correction for a satellite may include (i) a user differential range error (UDRE) indicating an uncertainty in a pseudo-range correction for the satellite, (ii) a UDRE growth rate, which may be a scaling factor for the UDRE, and (iii) a time of validity for UDRE growth rate, which may be a time unit used to apply the scaling factor. In one design, a terminal may send a request message to ask for differential correction information and may receive a response message. The terminal may obtain differential correction (e.g., a UDRE, a UDRE growth rate, and a time of validity for UDRE growth rate) for each of at least one satellite from the response message. The terminal may derive a location estimate for itself based on the differential correction for each satellite.
    • 描述用于支持差分校正定位的技术。 在一方面,卫星的差分校正可以包括(i)指示卫星的伪距校正中的不确定性的用户差分范围误差(UDRE),(ii)UDRE增长率,其可以是用于 UDRE,以及(iii)UDRE增长率的有效期,可能是用于应用比例因子的时间单位。 在一种设计中,终端可以发送请求消息来请求差分校正信息,并且可以接收响应消息。 终端可以从响应消息中获得至少一个卫星中的每一个的差分校正(例如,UDRE,UDRE增长率和UDRE增长率的有效时间)。 终端可以基于每个卫星的差分校正导出其自身的位置估计。