CONTENTS

I. INSTRUMENTS AND METHODS OF MEASUREMENT (BY TYPE OF MEASUREMENT)
A.V. Kohanov
Study of the system of primary cooling of strontium atoms in optical frequency standards ……. page 8
O.V. Kolmogorov, D.A. Lubchenko
Analysis of methods for measuring signal propagation delays in optical amplifiers and development of proposals for their implementation in measuring installations ……. page 18
R.I. Balayev, A.V. Naumov, A.N. Malimon
TWOTFT time scales comparison by 300 km fiber-optical lines using DPN modems with additional tone modulation ……. page 32

II. NAVIGATION INSTRUMENTS
M.O. Babenko, R.A. Davlatov
Results of development and laboratory testing of a horizontal gradiometer model on torsion balances ……. page 43
M.M. Murzabekov, V.F. Fateev, V.P. Lopatin
Reduction of the Earth’s anomalous magnetic field by the Fourier method ……. page 53
V.F. Fateev, V.P. Lopatin, A.S. Zavgorodniy
Experience of direct measurement of gravitational shift of GNSS satellite signal frequency at the point of traverse relatively to the ground station ……. page 64

III. METHODS AND INSTRUMENTS FOR MONITORING AND DIAGNOSTICS OF MATERIALS, PRODUCTS, SUBSTANCES AND THE NATURAL ENVIRONMENT
A.E. Aslanyan, S.M. Gavrilkin, V.A. Pivovarov
Analysis of methods for coating hardness measurements ……. page 89
D.V. Averkin, M.A. Averkina, D.M. Balakhanov, V.I. Dobrovolskiy
Development of particle size material measures in liquids with nominal particle size values of 0.6 to 1 microns ……. page 97
S.G. Fedorov
Automated system for filling cavity chambers with gases to reproduce units of absorbed dose and the rate of absorbed dose of neutron radiation ……. page 107
N.Y. Efremov, A.S. Golovko, K.O. Ryndina
Development of a program for controlling linear dimensions of parts on a video measuring machine ……. page 114

IV. METROLOGY AND METROLOGICAL SUPPORT
A.E. Isaev
Ensuring the uniformity of hydroacoustic measurements: directions and prospects of development ……. page 127
A.F. Kurchanov, P.G. Kharlamov
About the photo-charge effect ……. page 146
S.G. Fedorov
Research and analysis of nuclear physics installations and neutron fields for forming requirements for the means of transmissing the absorbed dose rate of neutron radiation ……. page 161
N.R. Bazhenov, O.V. Kaminsky, I.M. Malay
The metrological aspects of the modern digital communication systems testing ……. page 170

V. ANTENNAS, MICROWAVE DEVICES AND THEIR TECHNOLOGIES
S.A. Kolotygin, S.L. Neustroev, E.A. Olisov
Determination of antenna phase centers by extrapolation ……. page 176