Abstract:
PURPOSE: A satellite on-board baseband packet switching apparatus for multiple beams satellite communication is provided to reduce construction costs of a communication system by embodying a single on-board baseband packet switching apparatus. CONSTITUTION: A first input unit(210) changes first external data into a first data format. A second input unit(250) changes second external data into a second data format. A first output unit(220)changes a first output signal into an external data format. A second output unit(240) changes a second output signal into a second external data format. A CPU(Central Processing Unit)(230) executes a path control function by using a packet switching method between a first and a second output signal.
Abstract:
A method and an apparatus for measuring a position of victim using a search rescue terminal including a navigation chipset are provided to promptly measure a position of a victim by using only one or more navigation satellites which are in line-of-sight. A method for measuring a position of victim using a search rescue terminal including a navigation chipset comprises the following steps: a step for receiving a rescue signal from a search rescue terminal via a search rescue satellite(S202); a step for extracting information about a navigation satellite and distance information measured by a navigation chip from the rescue signal(S204); a step for receiving distance information measured in a search rescue satellite(S206); a step for determining a position of the search rescue terminal by integrating the distance information and the navigation satellite information(S208); and a step for informing the position of the determined search rescue terminal of a rescue center(S210).