Accession Number : AD0670113

Title :   THE POSSIBILITY OF THE APPLICATION OF GAS LASERS IN THE HIGH-PRECISION MEASUREMENT OF DISTANCES (O VOZMOZHNOSTI PRIMENENIYA GAZOVYKH LAZEROV PRI VYSOKOTOCHNOM IZMERENII RASSTOYANII),

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Golosov,V. V. ; Gordeev,D. V. ; Ostapchenko,E. P. ; Perebyankin,V. A. ; Khomaza,V. F.

Report Date : 22 SEP 1967

Pagination or Media Count : 13

Abstract : Experiments are described in which the light source of precision optical range finder (SG-2M) was replaced by a small gas laser. The purpose of the experiment was to increase the accuracy of distance measurements with such a range finder and to permit its use under daylight conditions. Another advantage of the laser is that it delivers a beam of much narrower spectral width. The gas was a mixture of helium and neon operating at 6328 A and delivering not less than 1 mW. The measurements were made of distances of the order of 3 km in sunlight and during twilight. In daylight, when the ordinary light source could not be used, the mean square measurement accuracy was plus or minus 2.4 mm, and in twilight, plus or minus 1.3 mm. Equipping the range finder with a laser approximately doubled the maximum distance measurable at night. The requirements that must be satisfied by the laser are specified, and it is found that the IG-55 developed by one of the MEP SSSR enterprises is the most suitable for this purpose. The specifications of this laser are listed. (Author)

Descriptors :   (*GEODESICS, RANGE FINDING), (*RANGE FINDING, *GAS LASERS), OPTICAL EQUIPMENT, HELIUM, NEON, COHERENT RADIATION, ACCURACY, TWILIGHT, INTENSITY, FOCUSING, OPTICAL PUMPING, MAPPING, DIURNAL VARIATIONS, USSR

Subject Categories : Cartography and Aerial Photography
      Geodesy
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE