Projection of the road ahead method camber / gradient calculation

The present invention discloses a method for estimating the road ahead calculating camber / gradient. First, the current location of a moving car to establish the origin of the two-dimensional dynamic orientation of the coordinate system, road conditions in and around the search for the origin; secondly, to determine the arc length interval according to the length and extent of road congestion cars, according to two adjacent road before and after selecting a plurality of points spaced a predetermined point of time, to obtain a two-dimensional coordinate values ​​in the coordinate system according to the orientation of the dynamic parameters of the geographical point, referred to as a column vector; again, column vector based on the known 3-dimensional polynomial fitting and to give a and second-order derivative function; Finally, each point is calculated relative to the amount of change required geographic point, the road ahead of the estimated camber / amount of change in the geographic gradient parameter. With the present invention, the camber of the road ahead / grade estimates made in advance, in order to take corresponding measures to advance technology to avoid collisions like traffic accidents.