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GPS-based steering needle instrument

  • US 20060161336A1
  • Filed: 01/14/2005
  • Published: 07/20/2006
  • Est. Priority Date: 01/14/2005
  • Status: Active Grant
First Claim
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1. A GPS steering indicator for visually displaying heading angle error in a moving conveyance using a GPS navigation unit, wherein said GPS navigation unit has memory means storing a predefined GPS track, and wherein said GPS navigation unit provides GPS data for said moving conveyance with said GPS data including said moving conveyance'"'"'s position, ground track heading, ground velocity, and cross track error with respect to said predefined GPS track, comprising:

  • a. a display;

    b. an indicator needle, movable across said display;

    c. communication means, for receiving said data from said GPS navigation unit;

    d. computation means for determining a heading angle error using said GPS data; and

    e. indicator needle deflecting means for deflecting said indicator needle in proportion to the value of said heading angle error determined by said computation means.

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