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SATPS mapping with angle orientation calibrator

  • US 5,379,045 A
  • Filed: 09/01/1993
  • Issued: 01/03/1995
  • Est. Priority Date: 09/01/1993
  • Status: Expired due to Fees
First Claim
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1. Apparatus for accurately determining the location of a designated object from a position spaced apart from the object, without requiring that the object be approached, the apparatus comprising:

  • a first SATPS station whose location is known with high accuracy, the first station comprising;

    a first SATPS antenna to receive SATPS signals from a plurality of SATPS satellites;

    a first SATPS receiver/processor, connected to the first SATPS antenna, to receive the SATPS signals from the first SATPS antenna, to determine the location of the first SATPS antenna and to determine an SATPS location correction that is the difference between the SATPS-determined location of the first SATPS antenna and the known location for the first SATPS antenna; and

    a correction signal transmitter, connected to the first SATPS receiver/processor, to receiver and transmit the SATPS location correction information;

    a mobile second SATPS station comprising;

    second and third SATPS antennas, positioned a known separation distance d apart, to receive SATPS signals from a plurality of SATPS satellites;

    a correction signal receiver, connected to the second SATPS receiver/processor, to receive the SATPS location correction information from the first SATPS station; and

    a second SATPS receiver/processor, connected to the second SATPS antenna and to the correction signal receiver, to receive the SATPS signals from the first SATPS antenna, to receive the SATPS location correction information from the correction signal receiver, to determine the location of the second and third SATPS antennas and to correct the SATPS-determined location of at least one of the second and third SATPS antennas, using the SATPS location correction information; and

    location determination means, located adjacent to the second or third SATPS antenna, for determining the length of an object vector and the angular orientation of the object vector relative to a selected reference line passing adjacent to the second and third SATPS antennas, where the object vector extends from the location determination means to the designated object.

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