| 摘要 |
Disclosed herein is a Satellite Based Augmentation System (SBAS) receiver. The SBAS receiver is configured to receive SBAS messages containing augmentation data and to provide one or more served GPS receivers with augmentation information based on the augmentation data extracted from the received SBAS messages. The SBAS receiver is designed to implement a Finite State Machine (FSM) intended to be common to all served GPS receivers, and configured to evolve based on the received SBAS messages and to store the augmentation data contained therein. The common FSM is further configured to cooperate with a number of correction modules equal to the number of served GPS receivers, each correction module being configured to receive GPS data from a corresponding served GPS receiver, and to compute an augmented position for the corresponding served GPS receiver based on the corresponding GPS data and on augmentation data retrieved from the common FSM. If the correction modules are implemented in the SBAS receiver, then the augmentation information provided by the SBAS receiver to each served GPS receiver is the augmented position computed by the corresponding correction module. If the correction modules are each implemented in a corresponding served GPS receiver, then the augmentation information provided by the SBAS receiver to the served GPS receiver is the augmentation data stored in the common FSM. |
