Automotive mirror with integrated Loran components
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United States of America Patent
Stats
-
Mar 25, 2003
Grant Date -
Dec 19, 2002
app pub date -
Jun 15, 2001
filing date -
Jun 15, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle includes a mirror assembly comprising components of a Loran positioning system. The mirror assembly may include an H-field antenna, receiver circuitry, a processor, memory, or a user interface. The Loran system communicates received data with various other vehicle systems over a data bus. Location data obtained from the Loran system is used to ascertain vehicle location, speed, and heading. Further, data from the Loran system is used to improve the accuracy and availability of GPS positioning data and to calibrate the vehicle compass and odometer. The accuracy of GPS position estimates is improved by combining data from both positioning systems. The GPS data is further improved by differential GPS (DGPS) data received by the Loran positioning system and communicated to the GPS positioning system. The availability of the GPS is improved since less than four channels of satellite signals are needed when combined with the Loran signals.
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