Patent ID: 6208938
Filing Date: 2001-03-27
Classification: G01S,G01W,G06K,Y02A

Abstract:
A method for determining and displaying weather conditions, including the steps of:generating a pixel image in a sector of the compass that includes a plurality of objects each at respectively different known range distances;calculating a contrast value between an average of pixel values in at least a portion of the pixel image of a first one of said plurality of objects and an average of pixel values of a background image adjacent said pixel image of the first one of said plurality of objects; andcomparing said contrast value to a threshold value to determine if it is less than or if it is greater than the threshold value in order to determine whether or not visibility extends to the range of said object;repeating said calculating and said comparing steps until the range to the furthest visible object is determined;making a plurality of cloud height measurements throughout a hemispherical region;calculating a ceiling value from said plurality of cloud height measurements;making a plurality of digital images of cloud cover substantially contemporaneously with the step of making of a plurality of cloud height measurements;storing said plurality of digital images;displaying said ceiling value; anddisplaying selected ones of said plurality of digital images.