Method and apparatus for maintaining the integrity of spacecraft based
time and position using GPS
    1.
    发明授权
    Method and apparatus for maintaining the integrity of spacecraft based time and position using GPS 有权
    使用GPS维持航天器基于时间和位置的完整性的方法和装置

    公开(公告)号:US6134484A

    公开(公告)日:2000-10-17

    申请号:US493482

    申请日:2000-01-28

    CPC分类号: G01S19/20 H04B7/18519

    摘要: A method and apparatus for maintaining the integrity of spacecraft based time and position using GPS (11) is disclosed. A GPS receiver is provided with a Receiver Autonomous Integrity Monitor (RAIM) processor (12) and a Kalman filter (14). GPS signals are received from at least four GPS satellites and processed in the GPS receiver to provide time and position information. Periodically, an extended fault vector is formed in the Kalman filter with propagated open-loop position and velocity measurements. The extended fault vector is used to isolate and remove failing GPS satellites.

    摘要翻译: 公开了一种使用GPS(11)维持基于航天器的时间和位置的完整性的方法和装置。 GPS接收器具有接收机自主完整性监视器(RAIM)处理器(12)和卡尔曼滤波器(14)。 GPS信号从至少四个GPS卫星接收并在GPS接收机中进行处理以提供时间和位置信息。 定期地,在具有传播的开环位置和速度测量的卡尔曼滤波器中形成扩展故障向量。 扩展故障向量用于隔离和去除故障的GPS卫星。