A company car http://thisav.fun/ this av The research team, led by Stephen Katzberg, has used these principles to devise a method to determine hurricane wind speeds and their distribution within a storm. The system uses GPS receiver chips aboard aircraft. A computer compares the signals emanating from satellites overhead with the reflected, distorted signals bouncing up from the ocean below. Based upon this, the computer calculates the approximate wind speed with accuracy to within 11 miles per hour. This is a remarkable degree of accuracy; for example, the wind speed of a Category 3 hurricane, in the middle of the Saffir-Simpson Hurricane Wind Scale, is 111 to 129 miles per hour.