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Predecessor
Volume 26, Issue 3
Displaying 1-8 of 8 articles from this issue
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[in Japanese]1987 Volume 26 Issue 3 Pages 1
Published: August 31, 1987
Released on J-STAGE: March 19, 2010
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[in Japanese]1987 Volume 26 Issue 3 Pages 2-3
Published: August 31, 1987
Released on J-STAGE: March 19, 2010
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Hirofumi CHIKATSU, Nobumasa KASUGAYA, Shunji MURAI1987 Volume 26 Issue 3 Pages 4-20
Published: August 31, 1987
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSIn the conventional phtogrammetry, the adjustment is carried out using geodetic observations. However there may include errors resulted from not only photogrammetic but also geodetic data. It is most reasonable to adjust those data simultaneously for errors of geodetic survey. The simultaneous adjustment of photographic and geodetic data such as distances, angles or heights has been developed by the authors. It was noted that the results show better than the ones by the conventional method.
This paper also discusses the method for the detection of gross error of control points. It is obvious that gross error over 10m can be detected by the developed simultaneous adjustment with orientation of a single photograph regardless of position, coordinates and direction of gross error.
Another noticeable result discussed in the presented paper formulates a method to estimate a gross errer, and it is demonstrated that this proposed method is able to estimate accurately and easily the position, coordinates and megnitude of gross error.View full abstractDownload PDF (1662K) -
[in Japanese], [in Japanese]1987 Volume 26 Issue 3 Pages 21-30
Published: August 31, 1987
Released on J-STAGE: March 19, 2010
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—A New Remote Sensing System by Helicopter—Harumi ARAKI1987 Volume 26 Issue 3 Pages 31-42
Published: August 31, 1987
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSSince 1985, many detail data of natural gamma rays in air have been collected by AERMS (Asahi Environmental Radiological Measuring System) .These data are composed of the following gamma rays.
Channel Energy Window Nuclide
1 0.50-0.80 Mev Scattered gamma rays
2 1.30-1.60 Mev Potassium 40
3 1.60-2.00 Mev Bismuth 214 (Radon daughter)
4 2.40-2.80 Mev Thallium 208 (Toron daughter)
5 0.15-3.00 Mev Environmental Radiations
Measurements of gamma rays by this airborne system have been carried out in the regions with various geological conditions, such as fault, volcanic areas and hot springs zones, or landslide areas, fissure/fracture zones and ground water reservoirs. As a principal information in geological aspect, a phenomenon of difference between Radon and Toron has been obtained by computer processing of such data. There is significant difference in the falf-value period between Radon and Toron originated in rock, therefore Radon and Toron ascend to a ground surface through cracks and fissures in the upper layer of the crust, shows different ratios and count numbers of Radon radiation are, usually, larger owing to this longer half-value period of Radon.View full abstractDownload PDF (1346K) -
[in Japanese]1987 Volume 26 Issue 3 Pages 43-47
Published: August 31, 1987
Released on J-STAGE: March 19, 2010
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[in Japanese]1987 Volume 26 Issue 3 Pages 48-51
Published: August 31, 1987
Released on J-STAGE: March 19, 2010
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[in Japanese]1987 Volume 26 Issue 3 Pages 57-59
Published: August 31, 1987
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (388K)
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