E-Call 112 and how it Affects GNSS

When the worst happens, seconds count. E-call, the European Commission's telematics project, is expected to save 2,500 lives annually in the EU by saving time in getting the emergency services to the right place as promptly as possible. An e-call can be initiated manually by vehicle occupants or automatically by the vehicle itself. Once communications is established with the emergency services (Public Safety Answering Point or PSAP), a data stream known as the Minimum Set of Data or MSD can be sent from the scene directly to the emergency services.

As you’d expect the MSD contains position information and so for our purposes in the area of positioning technology we need to establish that the vehicle knows its position at all times even if inverted in a ditch!

Testing to meet standards requires a degree of control and repeatability not readily available from field trials. If running such a test program you may reasonably expect a substantial reduction in uncertainty, test time and spend by incorporating a simulator. Using features such as antenna gain and phase masks, lever arms and the ability to switch between antenna patterns (to simulate an inverted car?) allows the rapid assessment of performance which may simply not be practicable using live-sky and real vehicles.

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