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Satellite-enabled signaling by aircraft transiting oceanic routes offers a near-term solution to curbing aviation emissions, asserts a Purdue University study. Aireon, the joint venture developing a space-based surveillance system based on automatic dependent surveillance-broadcast (ADS-B) position reporting, funded the study by Purdue’s school of aeronautics and astronautics.
Beyond the reach of land-based radar, aircraft flying on oceanic routes must report their position by satellite link or HF voice radio when they arrive at predetermined waypoints. With less frequent information on the whereabouts of such aircraft, air navigation service providers (Ansps) keep them separated laterally by 50 nm and longitudinally (in trail) by 10 minutes, or about 80 nm.