Patent ID: 7525480
Filing Date: 2009-04-28
Classification: G08G

Abstract:
1. A dynamic speed finding method comprising the following steps: A. using Global Position System (GPS) to detect the position and speed of a speed finding object; B. finding the relative position and relative speed of a target on the speed finding object; and C. solving the speed of the target by the position and speed of the speed finding object and the relative position and relative speed between the speed finding object and the target, wherein the speed of the target detected is solved by the following formula: wherein, the |V1(i)| is an absolute speed of the speed finding object in relation to the ground; |V2c(i)| is the speed of the target along the moving direction of the speed finding object; |P12c(i)| and |P12c(i−1)| are the relative consecutive positions between the speed finding object and the target along the moving direction of the speed finding object; and |V12c(i)| is the relative speed between the speed finding object and the target along the moving direction of the speed finding object detected by a speed finding unit.