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Lane guidance system

  • US 5,717,593 A
  • Filed: 09/01/1995
  • Issued: 02/10/1998
  • Est. Priority Date: 09/01/1995
  • Status: Expired due to Fees
First Claim
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1. An onboard, lane guidance navigation system for acquiring and maintaining alignment of the track of a piloted vehicle with a line segment on a surface,said system comprising at least one antenna and receiver for receiving navigation signals, data sufficient to locate said line segment, a computer for continuously resolving navigation parameters and generating navigation signals, and a visual indicator located within said pilot'"'"'s normal field of forward outside vision, said indicator comprising a horizontal lightbar, said lightbar illuminatable alternatively to left and right of a centerpoint in such direction and in such length as controlled by said navigation signals,said navigation parameters comprising the angle of intercept between said line segment and said track, the perpendicular distance of said vehicle from said line segment, and the rate of turn of said vehicle over the plane of said surface,said navigation signals comprising the sum of each of said navigation parameters as factored by a respective index,said sum being displayed on said indicator and there representing a pilot instruction for imparting corrective control action to said vehicle for said acquiring and maintaining alignment of said track and said line segment which said instruction said pilot is able to see and respond to without looking away from said normal field of forward outside vision.

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