Abstract: A system and method for efficient fast failover of a primary link to a secondary link comprising monitoring an amount of user packets on said primary link and sending synthetic packets on said secondary link at a predetermined rate based on said amount of user packets wherein said predetermined rate is changed as a function of change in said amount of user packets.

Abstract: A method is provided for generating a cartography of a geographic area, including a step of obtaining a satellite image providing a morphology of obstacles in certain geographical positions of the area, a step of obtaining first data for the altitude of peaks of the obstacles relative to sea level, a step of obtaining second data for the altitude of the ground for the geographical positions relative to sea level, a step of calculating the height of the obstacles via the difference between the first and second data, and a step of generating the cartography by combining, in each geographical position, morphology of the obstacle with the height of the obstacle.