公开(公告)号：WO2010047875A2

公开(公告)日：2010-04-29

申请号：PCT/US2009/054635

申请日：2009-08-21

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY ,  BAR-SEVER, Yoaz E. ,  BERTIGER, William I.

Inventor： BAR-SEVER, Yoaz E. ,  BERTIGER, William I.

IPC: G01S19/27 ,  G01S19/13

CPC classification number: G01S19/27

Abstract: Methods and apparatus for autonomous in-receiver prediction of orbit and clock states of Global Navigation Satellite Systems (GNSS) are described. Only the GNSS broadcast message is used, without need for periodic externally-communicated information. Earth orientation information is extracted from the GNSS broadcast ephemeris. With the accurate estimation of the Earth orientation parameters it is possible to propagate the best-fit GNSS orbits forward in time in an inertial reference frame. Using the estimated Earth orientation parameters, the predicted orbits are then transformed into Earth-Centered-Earth-Fixed (ECEF) coordinates to be used to assist the GNSS receiver in the acquision of the signals. GNSS satellite clock states are also extracted from the broadcast ephemeris and a parametrized model of clock behavior is fit to that data. The estimated modeled clocks are then propagated forward in time to enable, together with the predicted orbits, quicker GNSS signal acquision.

Abstract translation: 描述了用于全球导航卫星系统（GNSS）的轨道和时钟状态的自主接收机内预测的方法和装置。 只使用GNSS广播消息，而不需要周期性的外部通信信息。 从GNSS广播星历中提取地球方位信息。 通过准确估计地球定位参数，可以在惯性参考系中及时向前传播最佳拟合的GNSS轨道。 使用估计的地球定向参数，预测的轨道然后被转换成地心固定（ECEF）坐标，以用于辅助GNSS接收机进行信号采集。 也从广播星历中提取GNSS卫星时钟状态，并且时钟行为的参数化模型适合于该数据。 估计的建模时钟然后及时向前传播，以与预测的轨道一起实现更快的GNSS信号采集。

公开(公告)号：WO2014172675A1

公开(公告)日：2014-10-23

申请号：PCT/US2014/034711

申请日：2014-04-18

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： BAR-SEVER, Yoaz ,  BERTIGER, William I. ,  DORSEY, Angela R. ,  HARVEY, Nathaniel E. ,  LU, Wenwen ,  MILLER, Kevin J. ,  MILLER, Mark A. ,  ROMANS, Larry J. ,  SIBTHORPE, Anthony J. ,  WEISS, Jan P. ,  FERNANDEZ, Miquel Garcia ,  GROSS, Jason

IPC: G01S19/24 ,  G01S19/40

CPC classification number: G01S19/13 ,  B64G1/242 ,  B64G1/36 ,  G01S19/02 ,  G01S19/05 ,  G01S19/07

Abstract: Novel methods and systems for the accurate and efficient processing of real-time and latent global navigation satellite systems (GNSS) data are described. Such methods and systems can perform orbit determination of GNSS satellites, orbit determination of satellites carrying GNSS receivers, positioning of GNSS receivers, and environmental monitoring with GNSS data.

Abstract translation: 描述了用于准确和有效处理实时和潜在的全球导航卫星系统（GNSS）数据的新方法和系统。 这些方法和系统可以执行GNSS卫星的轨道确定，载有GNSS接收机的卫星的轨道确定，GNSS接收机的定位以及GNSS数据的环境监测。