Abstract:
A system includes a processor circuit and a computer readable storage medium. The processor circuit may be configured to plug into an on board diagnostic connector of a vehicle. The computer readable storage medium generally embodies computer executable instructions. The computer executable instructions, when executed by the processor circuit, enable the processor circuit to communicate with one or more busses of the vehicle and to communicate navigational information to an auxiliary device.
Abstract:
An apparatus comprising a first antenna, a second antenna, a processor and a memory. The first antenna is configured to connect to a GPS satellite. The second antenna is configured to connect to the GP S satellite. The first antenna is positioned separately from the second antenna. The processor is configured to execute instructions. The memory is configured to store the instructions that, when executed, perform the steps of (i) calculating a first value measured through a connection between the first antenna and the GPS satellite, (ii) calculating a second value measured through a connection between the second antenna and the GPS satellite, and (iii) determining a correction value to compensate for local conditions by analyzing differences between the first value and the second value.