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Enhanced Positioning Technology

For a more continuous navigation experience

Enhanced Positioning Technology (EPT) is used to estimate your current position when GPS reception

is unreliable or unavailable. When satellite signal reception is compromised, for example when driving

between tall buildings in metropolitan areas, EPT offers a more continuous navigation experience.

At the beginning of a journey it takes about one minute for EPT to fully calibrate. Once the device is

docked in the car, with good GPS reception and at a standstill, it calibrates for five seconds. Then, for

one minute after setting off, the calibration engine collects data from the sensors.

EPT features an accelerometer and a gyro. Data from the sensors is matched against the map data

to estimate your position. And it works whether you have a route planned or not. This means that you

can continue to navigate along your planned route when GPS reception is temporarily unavailable.

When there is a loss of GPS signal, the GPS reception indicator is replaced by the EPT icon.