Vehicle Linear Ccd .ins / Dgps Support Research And Application Of The Calibration Method

The Vehicle-Borne Multi-sensor Integration System includes two kinds of sensors, which are respectively used to get position information and image information. GPS and IMU is used for getting the position and pose of the system. CCD camera is respectively used for getting the picture and the figure information of the scenery.To assure the oneness of the information gotten by these sensors, we must have the only GPS reference frame, in which the reference frames of all sensors must be placed. So the calibration method, whose purpose is to make scientific researches about the different sensors'relations ,is necessary. The central excursion of all sensors can be measured in the calibration field after the system is completed. The calibration model is built for getting the inner and outer parameters of CCD camera. The camera calibration field is built with the mobile bracket which has some special signed curves. The pictures of the signed curves are gotten by the CCD camera, the equations are computed and the inner and outer orientation elements is gotten.In the issue, a mathematical calibration method of single-scanline camera is introduced. According to this calibration method, the correlative calibration field and equipment needed by the method are designed by ourselves, and coordinate frame is also gotten. many experiment methods are designed according to the trait of calibration equipment and camera under the uniform coordinate frame, and many data are gotten for different methods. These data are dealt with by the program that is designed according to the foregoing mathematical calibration method ,then the corresponding results are gotten. The contrasts about the result in different conditions are made, and the best result is gotten. Then the data, which is correspongding to the best result, are confirmed. Data and result are analyzed seriously, and the factors which can affect the result are gotten. The best experiment conditions are received, and the final conclusion are ascertained in the gotten condition.