Abstract: The present disclosure generally relates to a methods and systems for compensating for changes in the absolute position of locations with respect to the Earth's surface which occur over time due to crustal dynamics. The invention is particularly, although not exclusively, concerned with such compensation in the context of methods using digital map data, for example, methods of localization of a vehicle.

Abstract: A method of determining a correspondence between first and second digital maps is disclosed. Each map comprises a plurality of arcs connected by nodes representing the road network in a geographic area. A line location representing a route with respect to the first digital map for which a correspondence is required with respect to the second digital map is input to a correspondence module. The module uses map linkage data to determine corresponding location data with respect to the second digital map for use in providing a vehicle horizon. The map linkage data comprises data indicative of a plurality of arc sections of the first digital map, and, for each arc section of the first digital map, data indicative of a corresponding arc section of the second digital map. The map linkage data enables, for a starting arc section in either one of the first and second digital maps, a corresponding arc section in the other one of the first and second digital maps to be obtained.

Abstract: A method for providing data to one or more vehicles for controlling respective automated driving systems of the one or more vehicles, the method comprising: receiving an indication of a vehicle fleet; obtaining, from a restriction repository storing restriction data that indicates one or more location-dependent driving automation restrictions for automated driving systems, restriction data that corresponds to a portion of a road network and that is applicable to the indicated vehicle fleet; generating, or performing an update process for, a driving automation restriction layer for an amount of map data that corresponds to the portion of the road network based on the obtained restriction data; and providing the amount of map data, with the driving automation restriction layer, to one or more vehicles in the vehicle fleet.

Abstract: Disclosed herein is a technique for the generating and provision of digital map data that is safe and reliable. The technique enables the verification of the digital map data in a map-client using a simple and efficient data structure to check the correctness of the map data before in-vehicle delivery to components that rely on this map data.

Abstract: Disclosed herein is a technique for processing map change data in a map client that uses the map changes to apply changes and updates to current map data. The map client provides the updated map data to other components in an autonomous vehicle. The map change data describes the processing in the map client to obtain updated map data from the map data.

Abstract: Disclosed herein is a technique for generating and providing an indication to an autonomous vehicle regarding the confidence level for the accuracy or quality of the map data in which the indication is determined from observation data received from other vehicles.

Abstract: The present disclosure generally relates to a methods and systems for compensating for changes in the absolute position of locations with respect to the Earth's surface which occur over time due to crustal dynamics. The invention is particularly, although not exclusively, concerned with such compensation in the context of methods using digital map data, for example, methods of localization of a vehicle.

Abstract: A satellite signal acquisition apparatus comprises a parking detector (235) arranged to analyse, when in use, self-mobility behavior for monitoring mobility of a vehicle. The apparatus also comprises a global navigation satellite system receiver (238) operably coupled to the parking detector (235) and arranged to acquire a satellite signal using predicted satellite orbit data in response to the self-mobility behavior comprising the predetermined event sequence.

Abstract: A satellite signal acquisition apparatus comprises a parking detector (235) arranged to analyse, when in use, self-mobility behaviour for monitoring mobility of a vehicle. The apparatus also comprises a global navigation satellite system receiver (238) operably coupled to the parking detector (235) and arranged to acquire a satellite signal using predicted satellite orbit data in response to the self-mobility behaviour comprising the predetermined event sequence.