Patent ID: 6501422
Filing Date: 2002-12-31
Classification: G01S,G05D,Y02A

Abstract:
A spray-map generating system comprising:a satellite positioning system (SATPS) receiver mounted in a housing means of a mobile unit; wherein said (SATPS) receiver further comprises a differential GPS post-processing receiver; wherein said differential GPS post-processing receiver is configured to perform three dimensional coordinates measurements of said mobile unit; and wherein said mobile unit further comprises a farm tractor towing an implement; and wherein said implement further comprises a spray unit; a tilt angle measurement device integrated with said differential GPS post-processing receiver, wherein said tilt measurement device is configured to perform tilt coordinates measurements of said mobile unit; a differential GPS post-processing receiver/tilt integrated navigational computer, wherein said differential GPS post-processing receiver/tilt integrated navigational computer is configured to calculate three dimensional coordinates of an implement mounted in said mobile unit by solving a set of geometrical equations including said three dimensional coordinates of said mobile unit, said tilt coordinates of said mobile unit that are measured synchronously with said three dimensional coordinates of said mobile unit, and a distance between said differential GPS post-processing receiver and said implement; a map generating memory unit configured to record three dimensional coordinates of said implement in order to generate a map of an actual area covered by said implement; and a spray-map generating memory unit configured to record the amount of spray actually spent on said actually sprayed area of said field with variable tilt.