【作者】 吕艳玲；

【导师】 张建奇；

【作者基本信息】 西安电子科技大学 ， 物理电子学， 2006， 硕士

【摘要】 本文主要研究的是基于单站和多站目标空间位置及轨迹的确定方法,它是计算机视觉技术的一种应用。基于单站目标空间位置的确定方法是运用两个摄像机对同一目标从不同位置成像,实现对三维空间目标的定位。首先,对拍摄目标进行处理,得到其二维坐标。进而由双目体视成像原理,从两幅二维图像得到目标的三维空间坐标。为了提高目标的定位精度,引入基于多站目标空间位置及轨迹的确定方法。本文采用加权最小二乘法、极小化误差法、基于概率的多站空间定位方法,就目标位置、测向误差和站址位置测量误差等因素对定位精度的影响进行了比较和仿真,最终给出了目标的运动轨迹图和定位精度分布图。更多还原

【Abstract】 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.更多还原