Study Of The Method To Determine The Three-dimensional Coordinates And Trajectories Of Objects Based On Electro-optical Images

In this paper, the methods which determine the 3-D coordinates and trajectories of objects are studied based on single station location and multi-ground stations. It is an application of computer vision.The methods are introduced based on single station. In the methods, binocular stereo vision is applied to acquire the 3-D coordinates of the objects we are interested in. First, the images are processed with image processing algorithms and the 2-D coordinates of the objects are obtained. Then, according to the principle of binocular stereo vision, the 3-D coordinates of the objects can be reconstructed from the two 2-D images.In order to improve the location accuracy, the methods based on multi-ground stations are introduced. In this paper, several methods such as those based on weighted least square, minimum error and probability are studied. And the effects of the location of objects, the direction measurement error and the receivers'position measurement errors on the location accuracy are simulated and compared. At last, the track and the location accuracy of objects can be obtained.