While focusing on improving the level of metrological support for priority areas of science, engineering, and technology, the seventh issue of the Al’manac gives considerable attention to fundamental research and to the search for new solutions in metrological research.
These important areas primarily include time and frequency measurements and coordinate and navigational measurements, to which the bulk of this issue is devoted, and also neutron measurements.
The section “Development of the standards base” deals with the national primary standard of the unit of volumetric activity of radioactive aerosols.
A section titled “The history of the measurement base” is becoming traditional for the Al’manac. It introduces the reader to the history of serial manufacturing of VNIIFTRI hydrophones.
Founders of metrology fields are represented by two outstanding metrologists of the past century, Nikolai Nikolaevich Shishkin and David Yulievich Belotserkovskiy, whose 115th and 100th anniversaries have been widely celebrated by the metrology community, in particular by establishing a memorial plaque.

CONTENTS

FOREWORD
S.I. Donchenko
On improving the level of metrological support in priority areas of science, engineering, and technology       page 7

FUNDAMENTAL RESEARCH IN METROLOGY
A.N. Malimon
Results of trajectory measurements of Pioneer space probes and their interpretation within the framework of a dual wave mechanics model       page 13
I.V. Bezmenov, I.Yu. Blinov
Alternative axioms of STR and Lorentz equations for the 3D case        page 39
V.F. Fateev, E.A. Rybakov, V.P. Sysoev, A.I. Zharikov, F.R. Smirnov
A new method for determining the orthometric height based on the measurement of the gravitational effect of time dilation        page 67

METROLOGICAL STUDIES. SEARCH AND NEW SOLUTIONS
V.D. Sevastianov, O.I. Kovalenko, A.S. Orlov, R.M. Shibaev, Yu.A. Kashchyuk, S.Yu. Obudovskiy, D.V. Portnov
Investigation of the neutron characteristics of the NG-24M neutron generator in SRC TRINITI’s test bed for neutron diagnostics of plasma       page 75
M.S. Shkurkin
A fast transform algorithm in recovering the directivity characteristics of antennas from the results of measurements on a spherical surface in the near field       page 85

DEVELOPMENT OF THE STANDARDS BASE
S.G. Biryukov
National primary standard of the unit of volumetric activity of aerosols GET 39-2014       page 90

TIME AND FREQUENCY MEASUREMENTS
N.B. Koshelyaevskiy, Yu.S. Domnin
The direction and prospects for development of time and frequency measurements based on the materials of the 20th meeting of the Consultative Committee for Time and Frequency in 2015       page 93

COORDINATE AND NAVIGATIONAL MEASUREMENTS
A.S. Zavgorodniy, V.L. Voronov, I.V. Ryabov
A metrological system for estimating the energy characteristics of signals from GLONASS navigation satellites       page 124

THE HISTORY OF THE MEASUREMENT BASE
A.M. Enyakov
Serial VNIIFTRI hydrophones and the history of their creation        page 139

FOUNDERS OF METROLOGY FIELDS
Nikolai Nikolaevich Shishkin       page 186
David Yulievich Belotserkovskiy       page 189

NEW BOOKS ON METROLOGY       page 193