Recent advances of geospatial imagery technology, geographic information systems, and computer software and hardware technologies have changed the way geographic analyses are done. Geospatial imagery technology has provided a new basis for urban planning, infrastructure development, environmental assessment, land use evaluation, and detailed design of engineering projects. A new remote sensing satellite system now can offer spatial, spectral and temporal resolutions never before available to the public. With ever-increasing computing power, remotely sensed geospatial imagery data can be easily integrated into GIS or applications which are capable of incorporating satellite data and aerial photography into their data layers. However, to use these technologies effectively, it is important to know the strengths and limitations of remotely sensed data, and to understand which types of imagery and which imagery resolution are suited to particular projects. This paper discusses the recent development and the future trend in geospatial imagery technology and GIS, including remote sensing satellite system, aerial photography and airborne spectrographic imaging, and how best to use them in the transport planning process. (A)
Abstract