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    • 7. 发明授权
    • Navigation system using external monitoring
    • 导航系统采用外部监控
    • US07548196B2
    • 2009-06-16
    • US11355399
    • 2006-02-15
    • John E. FaganHengqing Wen
    • John E. FaganHengqing Wen
    • G01S1/00G01C21/00
    • G01S19/08G01S19/07
    • A local area augmentation navigation system for determining the authenticity of the GPS signal. The system is provided with at least one reference station at a known location, a master station, a monitoring receiver, and a LAAS receiver. Each reference station receives a GPS signal from a GPS constellation and collects and outputs pseudo-range data from the GPS signal. The master station receives the pseudo-range data from the reference stations. The master station forms a correction message from the pseudo-range data and the known locations of the reference station. The master station broadcasts the correction message. The monitoring receiver receives the GPS signal from the GPS constellation and the correction message to determine the accuracy of at least one of the broadcasted correction message and the GPS signal. The LAAS receiver receives the correction message broadcast by the master station as well as a GPS signal from the GPS constellation and calculates the location of the LAAS receiver with the correction message and the GPS signal.
    • 一种用于确定GPS信号的真实性的局域增强导航系统。 该系统在已知位置处设置有至少一个参考站,主站,监视接收器和LAAS接收器。 每个参考站从GPS星座接收GPS信号,并从GPS信号收集并输出伪距数据。 主站从参考站接收伪距数据。 主站从伪距数据和参考站的已知位置形成校正消息。 主站广播修正信息。 监视接收机从GPS星座接收GPS信号和校正消息,以确定广播校正消息和GPS信号中的至少一个的精度。 LAAS接收机接收由主站广播的校正消息以及来自GPS星座的GPS信号,并用校正消息和GPS信号计算LAAS接收机的位置。