The running issue of the “Almanac of Modern Metrology” 3 (27) is the third issue this year. It opens with a foreword, which raises the important problem of ensuring the reliability of measurements in health care, which is the most crucial task of the present day.
This issue contains articles on important questions of precise measurements in such areas as ionizing radiation, hydroacoustics. Environmental protection issues are raised, including acoustic monitoring of Arctic waters. The published article devoted to an automated system for monitoring the environment should arouse undoubted interest. There is also a traditional heading “Founders of Metrological Trends”.

CONTENTS

PREFACE OF THE CHIEF EDITOR
S.I. Donchenko
Ensring reliability of measurements in healthcare — the crucial task of the present day ……. page 8

I. TIME AND FREQUENCY MEASUREMENTS
R.I. Balaev
Simultaneous transmission on optoelectronically compensated fiber line of radio frequency signals from two hydrogen masers ……. page 12
A.F. Kurchanov, A.S. Salnikov
Dependence of the CPT resonance frequency of a cell with cesium vapors on the laser wave length ……. page 26
A.S. Zavgorodny
Definition of requirements for a calibration complex of large-aperture antenna systems ……. page 41

II. NEUTRON RADIATION DOSIMETRY
S.G. Fedorov, A.V. Berlyand, V.M. Dyachenko
Calculation of ambient dose equivalent (individual) rate of neutron radiation based on the spectrum measurements techniques ……. page 46

III. HYDROACOUSTIC MEASUREMENTS
A.E. Isaev, A.M. Polikarpov, B.I. Khatamtaev
VNIIFTRI’S tasks at the COOMET 786/RU/19 comparisons and approaches to their solution ……. page 62
А.М. Еnyakov, S.I. Kuznetsov
Features of the application of sound-transparent metallized foils for the calibration of hydrophones using optical interferometry in free field ……. page 85

IV. ACOUSTO-OPTICAL MEASURING DEVICES
V.M. Epikhin, M.M. Mazu, A.V. Ryabinin, P.V. Karnaushkin, L.I. Mazur, L.L. Paltsev, V.N. Shorin
Acousto-optic modulators-frequency shifters with fiber leads ……. page 104

V. METHODS OF CONTROL OVER ENVIRONMENT. ECOLOGICAL PROBLEMS
A.M. Enyakov, O.A. Panin
Climate change and environmental problems of noise pollution in Russia’s Arctic waters ……. page 117

VI. METROLOGICAL SUPPORT
A.A. Pankov
Assessment of the estimation of permissible deviations of the controlled parameter of the radio engineering product with incomplete basic data ……. page 138

VII. AUTOMATED MEASUREMENT SYSTEMS
E.A. Volkova, E.A. Sevryukova, A.E. Baskakov
Development of the algorithmic base of software and hardware complex of data concentrator in automated environment monitoring system ……. page 149
K.V. Epifantsev
Analysis of software packages applied for automation of measurements ……. page 167

VIII. QUESTIONS OF PRACTICAL METROLOGY
A.V. Aprelev, E.V. Davydova, V.A. Smirnov
Sulfur content indicator in motor fuel ……. page 182
N.A. Askerov
Method for calibrating acousto-optical alcoholometers for measuring the volume ratios of ethyl alcohol in multicomponent alcohol-containing solutions and determining the contribution of ingredients in the volume ratio of ethyl alcohol in multicomponent alcohol-containing solutions ……. page 193

IX. FOUNDERS OF METROLOGICAL DIRECTION
Vladimir Nikolaevich Titov ……. page 199
Vladimir Ivanovich Kozlov ……. page 201