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Abstract
Developing a Truly Low-Cost Mapping Systems Using Handheld GPS and Camcorder
Catur Aries R.
Department of Geodetic Engineering – Gadjah Mada University,
Indonesia
Email: c-aris@ygy.centrin.net.id
In a few developing countries, the need for survey-mapping product is not complete as yet. Unfortunately, there are not enough fund resources to do some mapping activities. Furthermore, the demand for mapping product is increasing. So, there is a need to develop some mapping systems that are characterized by low-cost, simply in operation, fast in production, and appropriate in quality. The choice is to use a low-cost instruments (consumers grade) for mapping systems. This paper will explain how to use handheld GPS and camcorder for developing low-cost mapping systems. The handheld GPS is used in survey static activities for ground control survey activities. This can be done by recording and processing the GPS carrier phase signal. The camcorder is used as a sensor for producing airborne imagery. This can be done by enhancing the geometry and the spatial resolution of the video images. This paper will show the systems architecture that can be installed by local operator easily. The results show the ability of the handheld GPS to produce a decimeter level accuracy in horizontal position and the ability of the camcorder to produce both of the near-orthogonal and the stereo imagery. The system can work to produce an orthophoto map at scale 1/5000. The cost analysis explain the all budget necessity for build-up the systems that still under 7.000 US$.
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