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    • 8. 发明授权
    • GNSS signal processing with regional augmentation positioning
    • GNSS信号处理与区域增强定位
    • US09164174B2
    • 2015-10-20
    • US13522329
    • 2011-02-14
    • Xiaoming ChenUlrich VollathKendall Ferguson
    • Xiaoming ChenUlrich VollathKendall Ferguson
    • G01S19/07G01S19/04G01S19/32G01S19/44G01S19/02G01S1/00G01S19/40G01S5/14
    • G01S19/04G01S1/00G01S5/14G01S19/02G01S19/07G01S19/32G01S19/40G01S19/41G01S19/43G01S19/44
    • Methods and apparatus for processing of GNSS data derived from multi-frequency code and carrier observations are presented which make available correction data for use by a rover located within the region, the correction data comprising: the ionospheric delay over the region, the tropospherπc delay over the region, the phase-leveled geometric correction per satellite, and the at least one code bias per satellite. In some embodiments the correction data includes an ionospheric phase bias per satellite. Methods and apparatus for determining a precise position of a rover located within a region are presented in which a GNSS receiver is operated to obtain multi-frequency code and carrier observations and correction data, to create rover corrections from the correction data, and to determine a precise rover position using the rover observations and the rover corrections. The correction data comprises at least one code bias per satellite, a fixed-nature MW bias per satellite and/or values from which a fixed-nature MW bias per satellite is derivable, and an ionospheric delay per satellite for each of multiple regional network stations and/or non-ionospheric corrections. Methods and apparatus for encoding and decoding the correction messages containing correction data are also presented, in which network messages include network elements related to substantially all stations of the network and cluster messages include cluster elements related to subsets of the network.
    • 提出了用于处理从多频码和载波观测得到的GNSS数据的方法和装置,其提供了位于该区域内的流动站使用的校正数据,校正数据包括:该区域上的电离层延迟,对流层和 延迟该区域,每个卫星的相位几何校正,以及至少一个每个卫星的码偏置。 在一些实施例中,校正数据包括每个卫星的电离层相位偏置。 介绍了一种用于确定位于一个区域内的流动站的精确位置的方法和装置,其中操作GNSS接收器以获得多频码和载波观测和校正数据,以从校正数据中产生流动站校正,并确定 使用流动站观测和流动站校正确定流动站的位置。 校正数据包括每个卫星至少一个代码偏置,每个卫星的固定自然MW偏差和/或每个卫星可衍生固定自然MW偏差的值,以及每个卫星对每个多个区域网络站的电离层延迟 和/或非电离层校正。 还提出了用于对包含校正数据的校正消息进行编码和解码的方法和装置,其中网络消息包括与网络的基本上所有站相关的网络元件,并且集群消息包括与网络的子集有关的集群元素。