GNSS TERMINALS AUTOMATICALLY RETRIEVING AIDING DATA AND AIDING DATA SYSTEMS

摘要

The invention provides an aiding data collecting method for a Global Navigation Satellite System (GNSS) terminal connected to an aiding data server through a wireless connection. Availability of an aiding data is first queried about. Whether the aiding data is in the GNSS terminal is then checked according to the response of the query. An aiding data request is then sent to the aiding data server. An aiding data sent by the aiding data server is then parsed in response to the aiding data request. Finally, the collected aiding data is sent to the GNSS terminal for acquiring and/or tracking satellite signal from at least one GNSS satellite.