Journal of the Geodetic Society of Japan
Online ISSN : 2185-517X
Print ISSN : 0038-0830
ISSN-L : 0038-0830
An Experiment on Multi-Wave Distance Measurements Using Geomensor and ME 5000
Fumiaki KIMATA
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1990 Volume 36 Issue 2 Pages 119-122

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Abstract
The two instruments, Geomensor and ME5000 are capable of measuring distance with a very high resolving power of sub-mm. The Geomensor uses a white ray from a xenon lamp, whereas the ME5000, a red helium-neon laser. These were simultaneously used along the same baseline. On a 1.6 km baseline, the change of line length due to atmospheric change was about 8 mm during seven hours. It was reduced within 0.9 mm by a multi-wave correction. In another experiment on a 3.6 km baseline, the difference between corrected line lengths measured on two consecutive days was less than 1 mm.
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