http://www.gissky.net- GIS空间站

从理论上详细分析车载式城市信息采集与3维建模系统(3Dsurs系统)激光扫描点的误差来源,误差主要包括GPS接收机天线定位误差、车载平台姿态测量误差、坐标传递误差和扫描仪标定误差,利用误差传播定律严密推导系统的误差影响,分析并评定系统的理论精度。通过理论分析和大量试验计算表明:当车载系统距离扫描立面为50m左右,物方扫描点精度在10cm左右,而距离为100m左右,物方扫描点精度为20cm左右,该精度能够满足1:2000比例尺的测图要求。 更多还原

【Abstract】 3DSurs is a vehicle-borne urban 3D information acquisition & modeling system,the theoretic error resources of 3Dsurs scanner point are analyzed in this paper,including GPS receiver antenna positioning error,vehicle-borne attitude measurement error,coordinate transformation error,and scanner calibration error.We analyzed the theoretical accuracy with error propagation law rigorously,it showed that the scanned point accuracy is up to 10cm when the distance between 3Dsurs and scanned facade is ... 更多还原