Patent attributes
A pseudolite device for providing navigation data, while denied or having limited access to satellite navigation signals for instance, may include a receiver for receiving, from each of a plurality of pseudolites, respective navigation data including an indication of an absolute position of a respective pseudolite and a time instance at which the navigation data is transmitted by the respective pseudolite. The pseudolite device may include a processor configured to determine an absolute position of the pseudolite device according to the navigation data received from each of the plurality of pseudolites, and a transmitter for broadcasting positioning data and transmission time data. The positioning data can include an indication of the determined absolute position of the pseudolite device and the transmission time data includes an indication of a time instance at which the positioning data is transmitted by the transmitter.
