Construction Features of The High-Precision Laser Rangefinder Light Modulator
Keywords:Modulation power, modulator quality, longitudinal and transverse electro-optical effects, coaxial resonator
The issues related to the development of a light modulator operating on the electro-optical effect of laser rangefinders by the modulation method are considered. To reduce the modulation power, it is proposed to lower the modulation frequency to 750-800 MHz, while simultaneously increasing the modulation quality to Q = 1000. The study of the phase determination error of a high-precision laser rangefinder depending on temperature showed that it is rational to construct the light modulator by radial installation of the KDP electro-optical crystal, with separated modulation and demodulation channels, while on combined resonators.
V.D. Bolshakov, F.Deymlikh, A.N. Golubev, V.P. Vasilyev, Radio-geodetic and electro-optical measurements. Nedra, Moscow, 1985 (in Russian).
H. Kamen, Electronic measurement methods in geodesy. Nedra, Moscow, 1982.
A.G. Beglaryan, K. S. Gyunashyan, Ye.H. Hayrapetyan, High precision light range-finder DVCD-1200 for linear comparator. Proceedings of 3rd international conference on contemporary problems of architecture and construction, Beijing, China, Nov. 20-24, 2011, 5-8. DOI: https://doi.org/10.1049/cp.2011.1293
K.S. Gyunashyan, R.R. Sinanyan, Ye.H. Hayrapetyan, Constant "K" of the CD-1200 light range finder and the results of production tests. Geodesy and aerial photography, 4, 1996, 136-143.
H. Meinke, F. Gundlakh, Radio-technical reference book. Gosenergoizdat, Leningrad, 1, 1960.
Ye.H. Hayrapetyan, H.S. Petosyan, H.A. Hunanyan, A.S. Tsaturyan, High-precision two-phase laser rangefinder PFSD-1,2 international scientific conference on construction the formation of living environment 2019 (FORM 2019), Tashkent, April 18-21, 2019, 1-9. DOI: https://doi.org/10.1051/e3sconf/20199706042
K.S. Gyunashyan, E.A. Hayrapetyan, Phase light range finder, RR Patent 1598613 (1990).
E.A. Hayrapetyan, S.K. Petrosyan, V.G. Harutyunyan, A.A. Khachatryan, Vybor modulyatora sveta etalonnogo svetodal'nomera. Bulletin of National University of Architecture and Construction of Armenia, 1, 2020, 50-57 (in Russian).
K.S. Gunashyan, E.A. Hayrapetyan, V.G. Harytunyan, Kh.V. Vardanyan, Microwave modulator-light demodulator, RR patent 1420367 (1988).
E.R. Mustel, V.N. Parygin, Methods of modulation and scanning of light. Nedra, Moscow, 1970.
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