VEHICLE LOCATING DEVICE AND METHOD

摘要

A system for determining the difference in altitude between a vehicle and a portable electronic device is provided. The system comprises a first pressure sensor, a second pressure sensor, and a processor. The first pressure sensor is coupled to the portable electronic device and generates a first signal indicative of the atmospheric pressure at the portable electronic device. The second pressure sensor is coupled to the vehicle and generates a second signal indicative of the atmospheric pressure at the vehicle. The processor is coupled between the vehicle and the portable electronic device and is configured to receive the first signal and determine a first pressure altitude therefrom, and receive the second signal and determine a second pressure altitude therefrom.