FIELD: radio engineering, communication.
SUBSTANCE: invention relates to satellite based augmentation system (SBAS) receivers and can be used as a European geostationary navigation overlay service (EGNOS) receiver. The SBAS receiver (81) is configured to receive SBAS messages containing augmentation data and to provide one or more GPS receivers (85) with augmentation information based on the augmentation data extracted from the SBAS messages. The SBAS receiver (81) is designed to implement a finite state machine (FSM) (83) which is common to all served GPS receivers (85), and is configured to evolve based on the SBAS messages and store the augmentation data contained therein. The common FSM (83) is configured to interact with a certain number of correction modules (84) equal to the number of GPS receivers (85), each correction module (84) being configured to receive GPS data from a corresponding served GPS receiver (85), and compute an augmented position for the corresponding served GPS receiver (85) based on the GPS data and on augmentation data retrieved from the common FSM (83).
EFFECT: design of a SBAS receiver configured to serve multiple GPS receivers while saving processing resources and allocated memory, without the expectation of serving each GPS receiver during the off-period of initialisation before obtaining the accurate augmented position based on SBAS for the served GPS receiver, with the possibility of interacting with future scenarios of providing SBAS messages.
14 cl, 8 dwg
