Abstract: A system and method crowdsources atmospheric data from one or more rovers. The rovers calculate an estimated ionosphere delay value that indicates an adverse effect of ionospheric activity on signals received from the GNSS satellite. The values and identifiers may be transmitted to a server. The server utilizes the received information to generate an ionosphere map that reflects the magnitude of ionospheric delay at different locations. The ionosphere map is transmitted to one or more rovers. The rover determines if a pierce point associated with a selected GNSS satellite in view of the rover falls within the boundaries of the ionosphere map. If so, a corresponding ionosphere delay value is obtained utilizing the ionosphere map and then applied as a correction to account for ionospheric activity. In addition, the central server and/or rover may transmit the estimated ionosphere delay values and identifiers to other rovers.

Abstract: A system and method crowdsources atmospheric data from one or more rovers. The rovers calculate an estimated ionosphere delay value that indicates an adverse effect of ionospheric activity on signals received from the GNSS satellite. The values and identifiers may be transmitted to a server. The server utilizes the received information to generate an ionosphere map that reflects the magnitude of ionospheric delay at different locations. The ionosphere map is transmitted to one or more rovers. The rover determines if a pierce point associated with a selected GNSS satellite in view of the rover falls within the boundaries of the ionosphere map. If so, a corresponding ionosphere delay value is obtained utilizing the ionosphere map and then applied as a correction to account for ionospheric activity. In addition, the central server and/or rover may transmit the estimated ionosphere delay values and identifiers to other rovers.

Abstract: Apparatus comprising one or more processors configured to provide a user with location service selection criterion signalling. The location service selection criterion signalling allows for user selection of one or more differing types of location service, wherein each of the differing types of location service are for the provision of location related data for the apparatus. The apparatus also comprises one or more inputs configured to receive user selection criterion signalling representative of user input responsive to said location service selection criterion signalling, and one or more processors configured to allow for use of the user selection criterion signalling to select one or more differing types of location service in the provision of location related data for the apparatus.

Abstract: Apparatus comprising one or more processors configured to provide a user with location service selection criterion signalling. The location service selection criterion signalling allows for user selection of one or more differing types of location service, wherein each of the differing types of location service are for the provision of location related data for the apparatus. The apparatus also comprises one or more inputs configured to receive user selection criterion signalling representative of user input responsive to said location service selection criterion signalling, and one or more processors configured to allow for use of the user selection criterion signalling to select one or more differing types of location service in the provision of location related data for the apparatus.