| 摘要 |
An electrical device 4 which produces electromagnetic radiation whilst performing a primary function, where a processor 11 and controller 7 determine the modulation of the radiation and the modulation signal is dependent on a signal received by the processor. The device 4 may be part of a vehicle and, whilst functioning as a transmitting antenna, have a primary function as a headlamp, windshield heater, alternator or traction machine. The traction machine 4 may propel the vehicle as part of a vehicle drive train or engine. The transmission signal may be frequency, amplitude or phase modulated to provide wireless communication and may be used as an emergency signal. The signal may be reflected off the ionosphere for extended coverage (Near Vertical Incidence Skywave) and may be used for vehicle to vehicle or vehicle to infrastructure communications The signal received by the processor 11 may be from a GPS (global positioning system), a mobile phone a microphone or a keyboard. |
