VIASAT - A mobile highway survey system of high accuracy

K. Schwarz, H. Martell, N. El-Sheimy, R. Li, M. Chapman, D. Cosandier
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引用次数: 54

Abstract

The prototype development of VIASAT, a precise mobile survey system for road inventory and associated GIS applications, is discussed. The system integrates inertial, satellite, and charge coupled device (CCD) camera technology to achieve an overall positioning accuracy of 0.3 m (1 ft) or better for all objects within a 50 m corridor on both sides of a highway. Combining the high positioning accuracy of Global Positioning System (GPS) with the precise pointing accuracy of inertial navigation system (INS) a cluster of CCD cameras will be accurately positioned and oriented at any instant of time. Using this information, objects along the highway can be precisely surveyed in three dimensions by processing the digital image information of the CCD camera cluster. The system concepts are discussed. Special emphasis is given to sensor integration, testing of the INS/GPS component and data flow from the acquisition process to the workstation environment.
VIASAT -高精度的移动公路测量系统
讨论了用于道路清查和相关GIS应用的精确移动测量系统VIASAT的原型开发。该系统集成了惯性、卫星和电荷耦合器件(CCD)相机技术,对高速公路两侧50米走廊内的所有物体实现0.3米(1英尺)或更高的总体定位精度。结合全球定位系统(GPS)的高定位精度和惯性导航系统(INS)的精确指向精度,一组CCD相机可以在任何时刻精确定位和定向。利用这些信息,通过处理CCD相机集群的数字图像信息,可以对高速公路沿线的物体进行三维精确测量。讨论了系统概念。特别强调了传感器集成、INS/GPS组件的测试以及从采集过程到工作站环境的数据流。
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