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Positioning and proximity warning method and system thereof for vehicle

DC
  • US 6,480,789 B2
  • Filed: 12/04/2000
  • Issued: 11/12/2002
  • Est. Priority Date: 12/04/2000
  • Status: Expired due to Term
First Claim
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1. A positioning and proximity warning method, comprising the steps of:

  • (a) receiving global positioning system signals for deriving position, velocity and time information or pseudorange and delta range measurements of a global positioning system, and outputting said global positioning system signals to an integrated positioning/ground proximity warning system processor;

    (b) receiving vehicle angular rate and specific force information for computing an inertial navigation solution, including position, velocity, and attitude of said vehicle, by solving inertial navigation equations, and outputting said inertial navigation solution to said integrated positioning/ground proximity warning processor;

    (c) measuring air pressure, and computing barometric measurements which is output to said integrated positioning/ground proximity warning processor;

    (d) measuring time delay between transmission and reception a radio signal from a terrain surface, and computing radio altitude measurement which is output to said integrated positioning/ground proximity warning processor;

    (e) accessing a terrain database for obtaining current vehicle position and surrounding terrain height data which is output to said integrated positioning/ground proximity warning processor;

    (f) receiving said position, velocity and time information or said pseudorange and delta range measurements of said global positioning system, said inertial navigation solution, said radio altitude measurement, said radio altitude measurement, and said current vehicle position and surrounding terrain height data, and computing optimal positioning solution data and optimal ground proximity warning solution data; and

    (g) receiving optimal positioning solution and position data of near objects and determining a optimal proximity warning solution with said near objects.

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