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Method and system for following a lead vehicle

  • US 7,593,811 B2
  • Filed: 03/31/2005
  • Issued: 09/22/2009
  • Est. Priority Date: 03/31/2005
  • Status: Active Grant
First Claim
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1. A method for following of a lead vehicle with a following vehicle, the method comprising:

  • transmitting a first transmission signal from a transmitter at a lead vehicle toward a first beacon associated with a following vehicle;

    communicating between the first beacon and a second beacon spaced apart from the first beacon by a known distance;

    transmitting a second transmission signal from the second beacon to the lead vehicle;

    determining a first elapsed time between the transmission of the first transmission signal to a first beacon;

    determining a second elapsed time between the transmission of the second transmission signal from the second beacon to the lead vehicle;

    converting the first elapsed time into a first distance between the transmitter and the first beacon;

    converting the second elapsed time into a second distance between the transmitter and the second beacon; and

    controlling a heading of the following vehicle to maintain a first distance substantially equal to a second distance; and

    controlling a speed of the following vehicle to maintain at least one of a desired first distance and a desired second distance.

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