Science & Technology: USSR — Electronics & Electrical Engineering

32 Pages·5.4 MB·English

by  United States Joint Publications Research Service

JPRS-UEE-9 1-001
2w9 JANvUARY 1991
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PRS Report—
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USSR: Electronics &
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Science & Technology
USSR: Electronics & Electrical Engineering
IPRS-ULE-YL-001 CONTENTS %Y Junuar
i} IY]
Broadcasting, Consumer Electronics
Davlighting-90 International Conference /t) Cd STRIOILAHMNIA LD No lOO
Analysis of Sky Brightness Distribution Models
Ro Auttler, Lo Prrshel; SURTOTLALTINIK A No 10.0
The Brightness of the Urban Environment
1 2) Bakharey, bo No Orlova SULTOTLATINTIA LA N OT YO
Light-Transmitting Elements of Polymethy! Methacrylate and Poly carbonat
Me hisher; SURTOVILAHNIK A No lO,O ct YO
Engineering Method of Designing Natural THlumination Systems tor Rooms With Fttective Sun
Protection Veda Mar Lot Sprite STL IOTLAIINIA LN N ()
Antennas, Propagation
Model of Variations in the Electronic Density Profiles of the Polar lonospherice D-Laver as a Function
of Riometric Absorption
Lol. Selenkova, | lL Soldatov, chal, GLONATONEL TIAN TE URONONMT) 4
| MI NOS. Sep-OctG O
Estimation of E-Layer Parameters From Long-Range Oblique Sounding Data
Ro Martin, L. Palasto, chal: GLOMAGNETIZN TAR RONOMI) 41 a \ sop-O
Propagation Features of Low-Frequency Electromagnetic Disturbances Caused by lonospheric b-Layer
Excitavion PoE Sakon, GEROMAGNETIZNE TT URONOMT) 1 1 uv) \ Sop-O
Global lonospheric Disturbances Generated by the Electrical Field) From. th \lorska /verda
\tomic Explosion on July 9. 1962
be. be. Lsediiina; GhLONMAGNETIZNM TE ARONOMI) 14 1) \ Sep-Oct YO
Global lonospheric Perturbations Caused by the Electrical Field From th Morskava Zvezda” Atom
Explosion of July 9. 1962. Part I
Yoo de. Lsedilina; GELOMAGNETIZNT AERONOMTY b Vol son Sop-O
Diurnal. Seasonal and Azimuthal Regularitics of Backscatter Signals
QO. ftlinov NO PO Marchen Chal: GLONMAGNE TIAN FT URONONMT) 1 | v) \ Sop-O0
Circuits, Systems
\nalyvtical Determination of Signatures for Multichannel Signature Analyzers
\ darmolt Lot. Kachan: IZVESTIYA TL YSSTUAIT COTE BNNYVAIL ZUEDENT)
PRIBOROSTROYENTIY TE, | 23ND Y Sen YO
Wideband Frequency Synthesis With Aid of Passive Digital Structures
Rise-Time and Amplitude Distortions of Exponential Video Pulses by Electronic Amptities
1 J trkudinoyv, Tool Krave ehoal: IZVESTIY & LT YSSHIATL CCHEBNYATL ZUEDENT)
PRIBOROSTROIYENTIYVE, Vol 33 No Y Sep 9
Scattering of Electromagnetic Waves by Reflector Antennas
da. Vo held, RADIOTEAKUNIKATELEKTRONIAL, | IT NON tag Yl
U'se of Ray Trajectories Representations in Extended Parameter Space For Solution of Problem of Wav:
Propagation Through Nonhomogeneous Media
Yu dt. Avavisovy, ALL. Svistunoy etal: RADIOTEKUHNIKATELEAKTRONIK SG, | y NOS YW)
Deflection of Light Rays During Multiple Anisotropic Dittraction of Light
1B Leoloshinoy, Bo Traore RADIOTELAHNIKATELEKTRONIA A, | NON
Accuracy of Measurement of Spectral Density of Atmospheric Radio Interterenc
DS. Doorvak, LG. Petrova, RADIOTELALHINIKATELEATRONIAL fF RS NON I
VLE-ELF Atmospheric Radio Interterence as Nonlinear Transtormation of Normal Nous
DS. Dohbrvak, Yeo te Lershinin, RADIOTEAAGLT ETLIEANTRIONKIAA GL. | RON NY A)
Optimization of Receiver of Phase-Shift-Keved Pscudorandom Signals in’ Presence of Worst-Cas
Interterence With Limited Average Power
1 oN. Putilin, Cho AL Chua RADIOTLLI ALIHLANTROINIAAL , | RS NON | i
JPRS-LEE-91L-001
29 January 1991 ? USSR: Electronics & Electrical Engineering
Anisotropically Conducting Helical-Heleal Circular Waveguide for Amplitier Stage of Twistron
Oscillator
[Po otrein Leh Savapen ehale RADIOTELAUTINIKATELEKTRONIAA, Vol 3s Nos. lug ¥
Design Optimization of Single-Mode Optical Fibers Made of Fluoride Glasses For Intermediate-Intrared
Radiation
[VG Plotnichenko, Lo brenkel RADIOTLAKUNIK AT ELEKTRONIK A, Vol 38 No S, lug YO
Electron Optical Correlation Methods and Means of Image Recognition: Survey of Literature
IG. LL Vastlenko, LoS. Gihing eta IZIESTIV A VY SSTITAIL COTLBNYATL ZUEDENT)
RADIOLLEKTRONIAA, Vol 838 No S, tug 90 S
Accuracy Analysis of Determination Laser Beam Coordinates in Tracking Television System
du | VMartyshevs) IZIESTI)D | |) SS///A/1 (CULBNYVAII JAVEDIENT)
RADIOLLEKTRONIKA, Vol 33 No S. lug ¥0/ ‘
Classification of Objects and Scenes With Aid of Correlation Function of Invariant Image Description
[Vt Dadeshidee, LN. Kompanets, et al. IZVESTIYA LY SSTHAIT CCHEBNY AIL ZUEDENTY
RADIOLLEKTRONIKA, Vol 33 No S. lug YO Y
Radio-Optical Antenna Array With Compression of Long Linear-Frequency- Modulation Signal
Jyeo N. Toronin, te Yue Gerinev. eta IZIESTIV A VT YSSTITATL COMLBNYAIL ZUWEDENT)
RAIDIOLLEKTRONIK A Vor 33 No 8S. lug 90 y
Output Signal of Adaptive Acoustooptical Processor of Long Linear- Frequency-Modulation Signals
Nob desephina, 4 OP Lavrov. er ale IZVESTIY TE LY SSTITATL COMLBNYAIL ZUEDENT)
RADIOLLEATRONIA A, | 9 NOS tay YO 1()
Stauistical Characteristics of Output Signal From Acoustooptical Sum-Ditterence Phase Meter
Ltda Odintyvav IZVESTIV UV YSSTHAIT COCTHEBNYAIL ZUEDENTY. RADIOLLEKTRONIK |
bol $8 No S. lug YO ()
Quasi-Optimum Algorithm of Correlational-Extremal Image Processing
MDA. Besugloy IZVESTIY UV YSSTITATL CCTHEBNYATL ZA EDENTY. RADIOLLIEKTRONIK |
| 7 VON live VO) ()
Image Recognition in Presence of Color Background Interference
PA. BaklitsAtye IZVESTIYA LY SSTITATT CCTIEBNZYALAEDIENTT Y: RADIOLLEKTRONIK I
bol 882 No SS fue GO | |
Optical Linear-Frequency-Modulation Correlator With Time Integration. Semiconductor Laser. and
( harge-Coupled Photodetector
Dob. Gayvnullin, NON] Yevtukhives. etal: IZVESTIYA LY SSTUAIT CCHEBNYZAUT EIDELNT )
RADIOLLIEAKTRONIK 4, | —§ NOS fue YO |
Shaping Spatial Radiation Pattern of Transmitter Antenna Arrays With Fibe -Optic Signal Distribution
System
1 oN. Bratchikhoy, tT Kukshine eta IAI ESTIV A TYSSTITAIL COCHUELBNYAIL ZUEDENTY
RIDIOLLILATRONIA LL, | §§ NOS fue YO 1]
l sing Computer tor Determining Parameters of Periodic Components of Digital Signals
Poot. Duinskthh, METROLOGTIY tN hil WO |.
Potential Accuracy of Laser Doppler Velocin-cters With Correlation of Photocounts
1 |. tverkin, tod Pop Cla VI ITROLOGI)Y LN: Jil YO
Phase Method of Acoustic Anemometrs
SZ Shkhundin, |. Bo Lashine METROLOGIY to No 7 Jul 90 }
Industrial Electronics. Control Instrumentation
Functional Electronic Element Design Principles
} |
ANB. Puttin ELEKTRONNOYVE MODLLIROUANIDE, No 4. Jul lug 9 14
Design of a Convolution Module to Detect Postulated Class of Defects
[ye bk. Berezkin, NOV. YVetromoy ELEKTRONNOYVE MODELLIROUANINE. No 4. Jul tug 9 4
Improvement of Linear Mathematical-Economics Model to Optimize Structure of Electric Power System
Generating Facilities
f1ot. homin, lh. DD. Khahachey, chal: RILEAKTRONNOYVE MODELIROUANIDE, No 4. Jul lug 90 I4
l'se of Analog Relative-Frequency-Difference Converter in Phase Lock Systems
l Ah. -G. Korsuns) IZNIERITELN AUD A TEATINIK AN Jil YO 14
More Accurate Measurement of Antenna Characteristics on Basis of Aprior: Information
Rf. Rumyantysey, IZMERITELNAY A TEATINIAK AN ful YO 1S
Temperature Field in Absorbing Wall of Coaxial Link
duo bl. Shpagin, LG. Martynes ISMERITELAU TNEAATIYNIVK A, Ne Mui! YW 1S
Metrological and Operating Characteristics of Microelectronic OQRS- Detectors
Bod. Podlepetshiy, SoU Loruhbaroy IZMERITEAL TENATAINTYIK AN Ji WO 15
JPRS-UEE-91-001
29 January 1991 3 USSR: Electronics & Electrical Engineering
Electron Devices
Television Image Generators in Radiation Frelds
Components, Hybrids, Manufacturing Technology
New Generation of Turbogenerators With Air Cooling System
ya. Bo Danilevich, GS. Zhuravley, ELEKTROTERUNIKA, NOY Sep VO, cocccccccccccccccccccccc ese ceecceeeeeeeeeeees 19
Selt-Generating Arc Quenchers in SE, Circuit Breakers
[L. N. Mathovskava, ELEATROTEAIINIK A, No Y& Sep 90/ 19
Carbon Slip Rings For A.C. Generators
JAS. bralkhov, Yeo bk. Kolpthova, etal: ELEKTROTEKTNIK A, NOG Sep GO] cccccccccccccccccccccecccecccueeeeuens 1Y
Optimization of KIS8OIVM2-Based Microprocessor Control for Electric Postuoning Drive
[VS Yudenkhoyv, Yue Ve. Lopatin, etal. ELEKTROTLAUNIK A, No Y Sep 90) (aneiawee 0
Experience and Problems in Producing Newest Medical Equipment for Mass Use
[Vo 1. Adasko, AB. Galitshin, chal: KLEKTROTEKUNIKA, No Y Sep 90/ — 0
Power Engineering
New Engineering Decisions for Primary Coal Crushing Equipment at Thermal Power Plants
[G. Po Berlvavskiy, BOL. Pasko, etal, ENERGETIKATELEAKTRIVIKATST) tb. No 8, Jul-Sep GO) occ.
Repair of Low-Voltage Winding Insulation of Power Transtormers With Compound Insulators
[Vol Kostin: ENERGETIKATELEKTRIFIKATSTY A. No 8, Jul-Sep 90)
Progressive Technology For Manufacture of High-Voltage Insulators
/B. 1. Davdash, VA Aleko, etal, ENERGETIKATELEKTRIFIKATSTY 1. No 3. Jul-Sep 90/
\utomated PC-Based Workstation For Diagnosis of Oil-Filled Power Equipment
[V. Bo Vidzigovskiy, VoL Kacharoy etal: ENERGETIKATELEKTRIFIKATSIY A, No 3, Jul-Sep 90).
Fundamental Concepts for the Futur* Development of Electric Power Engineering
/L. S. Popyvrin, ELEKTRICHESKIVE, ST ANTSIT, No 8. tug 90/ pe sainui oueaasiaeeriaeitanens
Three-Tiered Management) Structure For Power Engineering Under Conditions of Complete
Cost-Accounting and Self-Financing
[he bk. Makarov, LLEKTRICHESKIVE ST ANTSIT No 8S, tug YO) avekpesasndeisestiaaent
Modern 750 KV Power Transmission Lines
LAN. Sherentsis, KLEKTRICHESAIVE ST ANTSIL No S. lug 90/ peeeraes sess
Industrial Applications
Problems of Autonomous Electric Power Generation and Possible Solutions
LAL Lishchenko, TEKHNICHESKAY TELE KTRODINAMIBKA, No 5, Sep-Oct 90/ savesssueeeseueeses
Low-Power High-Voltage Sources
JA ot. Peniny TEKUNICHESKAY TP ELEKTRODIN ANTIK No S, Sep-Oct 90) Hateteueee
\utomatic Control and Monitoring Device AVTOSHCHIT tor Nonconventional Electric Energy Sources
[¥e. 1. Shevchenko, TEKHNICHESK AY TL ELEKTRODIN UMIK A No S, Sep-Oct 90/
Quantum Electronics, Electro-Optics
Calculation of Calibration Characteristics of Optical Analyzers for Fiber Diameter Measurement Taking
Into Account Spectral Characteristics of Radiation Source and of Photodetector
JV. 1. Ovod; ZHURNAL PRIKLADNOY SPEKTROSKOPII, Vol 83 No 3. Sep 90]
Infrared Radiation Absorption By Ge-Doped Silicon After Neutron Bombardment
[Vo 1. Borshcohenskhiy, DOL. Brinkevich, etal. ZHURNAL PRIKLADNOY SPEKTROSKOPII
lol 53 No3 . Sep Y()/ .
Trends in the Specifications of Series-Manutactured Nonscanning Ultraviolet Spectrophotometers
IB. 1. Liflvandchik, AV. Maliy; OPTIKO-MEKILANICHESK AY A PROMYSHLENNOST
Vo 8S, dug 90/ '
Nonhomothetic Transformation of a Background Interference Domain in Multispectrum Systems With
Different Fields
/Yu. P. Safronov; OPTIKO-MEKIANICTIESKAY EPROMIYSHLENNOST. No 8S. tug 90/ ae
Investigation of Wavefront Restoration Accuracy by Interterogram Processing
IM. A. Gan, So 1. Ustinov, etal. OPTIKO-MEKILAINICHESK UY EF PROMYSHLENNOST
Vo 8, tug YO/ 6
JPRS-UEE-91-001 .
29 January 1991 4 USSR: Electronics & Electrical Engineering
Recording of Lateral Shear Holographic Interferograms By Spatial Filtering
[}.G. Gusev, OPTIKO-MEATLANICHESKA YE PROMYSHLENNOST. No 8, dug YO) occ. 26
Determination of Spherical Surtace Errors By Spherical Beam Interferometry
[V. B. Gubin, VN. Sharonoy, OPTIKO-MEKILINICHESKAY. A PROMYSHLENNOST,
Vo S, tug 9O/ — savdvenaveses Gaipusussssiaavns euiaeesnans “ews 6
JPRS-LCEE-9L-001
29 January 1991 Broadcasting, Consumer Electronics I
Daylighting-90 International Conference other buildings visible through lighting passages. This
YI KOOSYA Moscow SEL TOTEATHANIK A in Russia article Calculates the luminance factors and brightness of
Vo 10, O61 YO pT building facades, assuming that all surrounding surfaces
reflect light according to Lambert's law. The model of
[Article by Unsigned] brightness of the urban environment ts intended for theo-
retical studies of systems of natural lighting tor rooms with
| Abstract] An announcement is presented in Russian and lateral illumination. Figures 5; References 5: Russian
English for the International Conference Day lighting-90
to be held October 9-12 at the Screntific-Research Inst
L' DC 628.9952
tute of Structural Physics. The conterence will involve
participants trom the USSR. USA. Czechoslovakia
Japan, Sigapore, France and other nations. Over LOO Light- Transmitting Elements of Polymethyl
reports on different aspects of research in the field of Viethacrylate and Polycarbonate
daylighting and combined lighting will be presented at YI7KOOZYD Moscow SUL TOLERKUNIK (in Russian
the planery meeting and in four sections. This special Vo 10, Oct YO pp 12-14
issuc Of Svetotekhnika contains some of the papers to be
presented at the conference
[Article by UU. Fisher, Germany |
UDC 628.9.071-.535.625.2:311.17 [Abstract] The first successtul tests of polymethyl meth
acrylate (PMMA) and polycarbonate (PC) as greenhouse
Analysis of Sky Brightness Distribution Vlodels construction materials, undertaken tn the USSR, stimu-
lated the writing of this articl’, intended to familiarize
YY] KOOSYB Moscow SUL TOTEATINIKA in Russian
designers with the properties of these materials. Exam-
No 10, Oct YO pp 3-8
ples of architectural uses of the materials are presented
in photographs. Recommendations are given for manu-
[Article by R. Kattlher, L. Pirshel. Slovak Academy of
Sciences, Bratislava] facture, transportation, storage and installation of the
materials. Figures &
[Abstract] Various analytic sky models have been cre
ated considering the mean weighted interactions of the
LDC 628.92]
basic atmospheric and solar lighting effects. An empir-
ical method has also been used to create sky brightness
models, allowing the combination of a sufficient repre- Engineering Method of Designing Natural
sentative quantity of measured data thus producing a Ilumination Systems for Rooms With Effective
model of the sky by the use of methods of approximation Sun Protection
allempting as a result to obtain the distribution of YITKOOSYE Moscow SURTOTLAITINIAA in Russian
brightness best corresponding to nature. The analytical.
Vo l0) Ol Yi) pp 16 1Y
Statistical and combined models of the distribution of
brightness in the sky are compared. Samples of bright-
[Article by M. Yu. Mitnik. A. V. Spiridonoy. Scientitic
ness distribution models generated by computer graphics
Research Institute of Construction Physics]
methods are presented. Figures 4
{|A bstract] Experimental studies were used to determine
UI DC 628.921/.998 the distribution of the natural lighting utilization factor
for various natural lighting systems with fixed mutual
The Brightness of the Urban Environment placement of the Sun and the light passage considered
The authors have developed a program for the design of
YI -KOOZ9C Moscow SUL TOTEAKTINIK.A tn Russian
three-dimenstonal surfaces. intended to be run on per-
Vo 10, Oct 9O pp 9-11
sonal computers. The program can construct cross sec-
tions of three-dimensional surtaces. the points of which
[Article by V. D. Bakharev. L. N. Orlova, Gorkiy Con-
are fixed in a rectangular coordinate grid. The program
struction Engineering Institute iment \ P. Chkalov]
computes thermal inputs to rooms for various surround-
[Abstract] The luminance in rooms located in the lower ings of the building. various types of Sun-protection
Storage of buildings shielded by surrounding structures devices and orientations of building surfaces and Sun
depends on the brightness of the Earth and segments of angles. Figures 4: References 6: 4 Russian, 2 Western
JPRS-LEE-91-001
(Antennas, Propagation 29 January 199]
tv
Model of Variations in the Electronic Density [Abstract] The space-time distribution of geomagnetic
Profiles of the Polar lonospheric D-Layer as a disturbances caused by the nonmonotonic nature of a
Function of Riometric Absorption derived dispersion relation is investigated employing a
sample concentrated source. This analysis is based on
Y)7"KOOIOA Moscow GELONMAGNETIZNM 1
{eRONOMI)Y Ain Russtan bol 830. No Ss the common propagation teatures of natural iow tre-
quency (0.1 to | Hz) electromagnetic oscillations of the
Sep-Oct YO pp "NSN. TY]
ionospheric E-layer. Primary attention is given to the
fundamental mode which has the most severe attenua
[Article by | V. Zelenkova, \ \. Soldatov, V. F. Laykova]
lion near the spectral maximum. The solution ts
[Abstract] The relationship between the electronic density obtained as a series that sums the contributions of the
profile in the 1onospheric D-layer in polar regions and the individual natural oscillations in this lover. It is deter-
nometric absorption level as well as magnetic field varia- mined that tar trom the source the characteristic scale of
tions 1s investigated. Expressions are derived that make tt the excitation grows due to dispersion, while its max-
possible to obtain the differential flux of incoming electrons imum travels at a near-constant velocity corresponding
responsible for such absorption for each riometric absorp- to the group velocity of the tundamental mode near the
tion level. Extensive experiemental data on altitude profile allenuation minimum
variations were used to calculate the altitude distribution of
the electron concentrations at high altitudes. These calcula-
U'DC S§S0.388.2
tions made it possible to record variations in the electronic
density profile accurate to a factor of two depending on the
Global lonospheric Disturbances Generated by the
degree of ionospheric disturbances. The four-parameter
Electrical Field From the “Morskaya Zvezda”
technique for describing the electronic density profile pro-
Atomic Explosion on July 9, 1962
posed here accurately reflects changes in the electronic
YI -KOOFOD Moscow GLONMAGNETIZM
concentration trom 1onospheric disturbances.
1eRONOATITY Lin Russian bol 830 No 3
Sep-Oct YO. pp ST3-STY
UDC $50,388?
[Article by Ye. Ye. Tsedilina. V2 M. Shashun'kina]
Estimation of E-Layer Parameters From
Long-Range Oblique Sounding Data [Abstract] Previously-reported theoretical calculations ot the
electrical field generated by the “Morskava Zvezda’ Atomic
Y])"RKOOAOB Moscow GhONMAGNETIZNM 1
IERONOMI) tin Russian Vol 30 No 8 Explos on on July 9, 1962 are used to determine the far-field
Sep Oct YO pp 7Y?-7YUN lerrestria! region that will contain a powerful electrical field
as a result of such an explosion. It 1s demonstrated from an
[Article by R. Martin. L. Palasio. A.‘ Popov. Yu.N. analysis of the electrical field calculations and estimates of
Cherkashin| its effect on charged particle concentrations in the atmo-
sphere that substantial 1onospheric disturbances of approxt-
[Abstract] A quasiparabolic single-layered 1onospheric mately twenty percent should be observed within this region:
model 1s used to obtain @ simple estimate of the critical such results have not been previously reported in the litera-
frequency and geometric parameters of the 1onospheric ture. These characteristic theoretically- predicted features of
F-laver. In this technique the maximum frequencies of the 1onospheric disturbances can be used for identification
the individual wave propagation modes and relative and proper interpretation of such disturbances
signal delavs are the only data recovered from the
ionograms. The analysis results are presented in conve-
UDC 550.388.2
nient nomogram form. The horizontal gradients are
accounted for by means of an adiabatic approximation.
Global lonospheric Perturbations Caused by the
The critical frequencies and ionospheric base altitudes
Electrical Field From the “Morskaya Zvezda”
predicted by the model are in good agreement with
Atomic Explosion of July 9, 1962. Part II
long-term 1tonospheric forecasting data for the Moscow-
Havana route. YI 7KOOFOL Moscow GEOMAGNETIZAM 1
IRONOMIY bin Russtan Vol 30 No S$
Sep-Oct YO pp 8s W)-NSIOS
UDC §50.388.2
[Article by Ye. Ye. Tsedilina. V. M. Shashun’kina]
Propagation Features of Low-Frequency
Electromagnetic Disturbances Caused by
[Abstract] The 1onospheric field disturbances caused by the
lonospheric E-Layer Excitation
electrical pulse generated by the “Mors’aya Zvezda’ atomic
YI7KOOFIC Moscow GLONMAGNETIZN 1 explosion of July 9. 1962 are analyzed based on data
{1eRONOMI)Y tin Russian Vol 80 No § provided by six 1onospheric monitoring stations around the
Sep Oct YO pp S06 VY] 2 world. lonospheric data plots in the region of strong field
effects from monitoring stations in Churchill, Kenora,
[Artick by V.V. Surkov] Ottawa. St. Johns. White Sand. and Mexico are provided
JPRS-U EE-91-001
29 January 1991 Antennas, Propagation 3
together with similar plots for stations in South America [Abstract] Diurnal. seasonal and azimuthal regularities of
These data reveal a strong explosion-generated electrical backscatter signals are investigated based on experimental
field effect on the 1onosphere. It is demonstrated that in the azimuthal scanning radar backscatter signals at 20 MHz
initial instant following the blast the electron concentration obtained in Dushanbe (38 degrees N, 68 degrees E) from
in the 1onospheric E-layer drops by approximately twenty April 1987 through January of 1988. The instrumentation
percent in the strong electrical field range. while the entire and measurement technique used in these studies are
layer diminishes overall as well
described. The dependences of the averaged minimum and
maximum group path of the backscatter signals as a
UDC §50.388.? function of time of day and season in Dushanbe are
provided together with a plot of the seasonal progression of
Diurnal, Seasonal and Azimuthal Regularities of the median maximum reflection frequencies off the 1ono-
Backscatter Signals spheric E-layer for the case of vertical incidence. The
Y)7KOOFOR Moscow GELOMAGNETIZN 1 year-long observation period in Dushanbe was found to
WeRONOMT)Y tin Russian Vol 80. No S$ substantially improve the accuracy of radiowave predic-
Sep-OcYOt p p 826-831 tions. An analysis of these experimental data can be used
19 relate the 1onospheric dynamics and reflecting surtace
[Article by O. Alimoy. N. P. Marchenko. | N. Rubtsoy relief to the features of backscatter signals arriving from
I. A. Tushentsova. Ye. Ye. Tsedilinal different azimuthal angles
JPRS-LEE-91-001
4 Circuits, Systems 29 January 1991
addition of a code calculator which wall divide the reterence
frequency f, by N = whole part of P/Q + WQ (a= 0.1.....Q-1)
Analytical Determination of Signatures for The eighth automaton is based on a tractional-variable
Nlultichannel Signature Analyzers divisor for frequency synthesis according to Euchid’s algo-
rithm, with the divisor N in the form of a continued fraction
AL KOOOO A Leningrad IZVESTIYA LY SSTITKTT
This automaton, controlled by a fixed- capacity accumulator
CCHLBNYALH ZUELDENTY
register, 18 the one most easily coupled to a linear precisely
PRIBOROSTROYVENTY TL in Russia
adjustable inhibit circuit. The highest reierence trequency
| 19 VO VY No » YO pp sos t\ for such an automaton is determined principally by the
accumulator register speed. its highest possible output tre-
[Article by VON. Yarmolik and I Vo Kachan. Minsk quency being determined by the code divider speed and
Institute of Radio Engineering] word length. Both seventh and eighth automatons will syn-
thesize. without addivional hardware. a grid with the same
[Abstract] An analytical method of calculating signatures for
given quality indicators but covering a wider trequency
the most common versions of multichannel signature ana-
range or a grid covering the same frequency range but having
lyvzers 18 Outlined, two such analyzers being one with an
better quality indicators when interfaced with a control
internal modulo-2 adder and another one being the Built-In
Logic Block Observation analyzer. The calculation ts based computer (central processor) or a built-in microcomputet
Figures 3: references |4
on the system of two equations describing the analyzer
Operation and on its characteristic polynomial. A matrix is
shown to exist which relates the states of a given multi-
channel signature analyzer. A formula for the signatures 1s
obtained which derives from the linearity of the modulo-2
summation Operation. Figures 2; references 6 Rise- lime and Amplitude Distortions of
Exponential Video Pulses by Electronic Amplifier
YI KOOOOC Leningrad IZVESTIY LLY SSTIKET
CCHELBNYAIH ZAUEDENT)
Wideband Frequency Syathesis With Aid of PRIBOROSTROIVENIYE in R 7
Passive Digital Structures bol 38 > No YG Sep GO pp 59-64
YI7ROO6UB Leningrad IZVESTIYA YSSHIKIT
CCHELBNYATTZUWEDENT) [Article by A. 1. Ankudinoy. V. 1. Kravets. K. A. Ankudinoy
PRIBOROSTROYENITY EL in Russian and V. P. Kodorchenko. Leningrad]
bol 83 NoY Sep YO) pp 1Y.J~
[Abstract] Transtormation of an cxaponential video
pulses during its passage through an clectronic amplifies
[Article by Yu. A. Nikitin. Leningrad Institute of Elec-
iS analyzed, considering that such an amplifier consists
trical Communications Engineering iment Protessor
M.A. Bonch-Bruvevich] of lumped-parameter and distributed-parameter active
and passive clements. The transfer function of such an
[Abstract] Eight structures of finite digital automatons most amplifticr is reduced to Ws) STK/ 1+ st, in’ the
suitable for two-level passive frequency synthesis. namely for low-frequency range and W,s = K/(1+ st, in the high-
division of a reference frequency f,, by a fractional number N frequency range. W(s) = st;|K/(1+ st) (1+ st) Covering
P’Q to obtain an output frequency f,. are comparatively the entire frequency range (t being the respective time
evaluated in terms of frequency ratio, mean-square error of constants). A signal of the form v(t) = Ve" with a
the quasi-uniform pulse sequence over the nonuniformity lime constant t 1s considered at the amplifier input. The
period, and coupling to a controllable inhibit circuit. Six of Output signal V,, 1s calculated by the method of Laplace
these automatons are based on an accumulator register, the transforms. constants being generally different. The cal-
firs’ three being direct-trequency automatons controlled by culations are simplified by first assuming that the signal
the direct code Q of the output frequency f,. Although their lime constant 1s equal successively to the two amplifier
Output frequencies are each based on the same relation to the tinic constants. The changes in signal rise time and
reference frequency, these three automatons differ with relative amplitude are then characterized by the index 6
respect to duration nonuniformity of pulses in the sequence (Vou KV WYKYV, | which relates the output signal to
and necessary accumulator speed. The fourth automaton ts the input signal. Both changes are normalized and as
similar to the first one. but with additional control by such calculated for given signal time constant t and ratio
another code. The last two of those six automatons can of the amplifier time constants m = t/t. this ratio being
synthesize a grid of frequencies or a grid of periods, each equal to the ratio t,/t, of upper cutott and lower cutoft
mode of operation requiring a different number Q at the frequencies. These two frequencies can then also be
accumulator register input and a different adder capacity P readily determined. The algorithm has been. pro
The seventh. a direct-period automaton, is based on a grammed on an Elektronika DZ-28 microcomputer. The
variable divisor and synthesizes a grid of periods directly results of calculations for an amplifier with f, = 60 Hz
proportional to the control code N = integer + fraction and {, = 60 kHz agreed within 5 percent with test
Synthesis of a frequency grid by this automaton requires results. Figures 2: tables |: references &
JPRS-Ul EE-91-001
29 January 199] Circuits, Systems §
396.670] integral somewhat different than Yu.l Orlov ’s(TRUDY
MOSKOVSKOGO ENERGETICHESKOGO INSTI-
PUTA No T19, 1972). As a specitic problem is consid-
Scattering of Electromagnetic Waves by Reflector ered the two-dimensional field of a point source describ-
Antennas able by the Helmholtz equation, this field being a
YI 7ROO37 1 Moscow RIDIOTLAHINIA AT function not only of the space coordinates x.y but also
LLEAITRONIAA n Russian depending on the \,, coordinate of the source. Solution of
| > \ Ss ] j Aj pop 196 lovs this problem by the “partial” ticld method. using the
Fourier integral with respect to the third parameter s
codp (p,- angle otf departure) and with the Helmholtz
[Article by Ya N Feld] equation modified accordingly. vields the field in the ray
representation with an amplitude and a phase which
| Abstract] Scattering of a plane clectromagnetic wave by a
reflector antenna in vie form of a truncated paraboloid of sauisty the conventional equation of geometrical optics
revolution wiih linear dipole at the focus perpendicular to For a determination of the partial wave are then needed
the axis is analyzed, assuming that the reflector 1s infinites- trajectories Which depart from the z = 0 plane at angle (3
imally thin and an ideal conductor. The dipole is connected and arrive at the observation point (x.7). Figures 5
to an impedance and a primary wave E’.H’ impinges on the references 10
reflector surface. that surface being fictitiously comple-
mented to a geometrically closed one and a tamily ot
appropriate auxthary currents being stipulated on the entire
surface. The vector function is determined which represents
the current density on the physical metal surtace and the
tangential component of the electric vector on the comple- Deflection of Light Rays During Vlultiple
mentary geometrical surface. with the aid of its Fourie Anisotropic Diffraction of Light
coefficients is then constructed a convergent series each
YI OROOS TO Moscow RADIOTLAHNIKG 1
term of which satisfies the Meixner boundary conditions at
LLEATRONIA Gin Russian
the reflector edge. The reflector current 1s calculated next
and then are calculated the scattered field and the scattering bol 38 NoS. luge Oi} pon 1610-1i 616
cross-section of the reflector. Figures 2: references 5
[Article by V. Bo Voloshinoy and B. Traore]
LDC §$37874.4.0]
| Abstract] Multiple anisotropic Bragg diffraction of light
Use of Ray Trajectories Representations in by two acoustic waves of equal or nearly equal frequen-
Extended Parameter Space For Solution of cies propagating in mutuall, orthogonal directions
Problem of Wave Propagation Through through a crystal is analyzed. assuming that the crystal is
Nonhomogeneous Media a uniaxial positive optical one the two acoustic waves
propagate in a plane perpendicular to its optical axis
YI OKOOSCB Moscow RADIOTEAHINIK AT
LLEAKTRONIK Ain Russian The resulting deflection of light rays 1s calculated on the
bol S3 NOS, Lue YW) pp 16038-1609 basis of a system of coupled differential equations for
plane light waves and their interaction with ultrasound
the intensity of light in the diffraction orders and thus
[Article by Yu. A. Kravisov. K. V. Svistunoyva.n d M. \ efficiency of light in cach depending on the power of the
Tinin] ACOUSTIC Waves Fight scattering-intensity maxima are
Shown to be atiainable. but the acoustic power being too
[Abstract] Propagation of waves through a= two-
high compared with the power for single scattering. An
dimensionally nonhomogeneous medium from a point
experiment was performed with a paratelluride TeQ,
source tn this medium is analyzed by using the represen-
crystal. this crystal being characterized by a large value
lation of ray trajectories in an extended parameter space.
of the M, acoustooptic interaction index. Light in this
a typical medium under consideration being the Earth's
and any medium is multiply diffracted by acoustic waves
ionosphere. The conventional (x.7)-space is accordingly
within a very narrow trequency band and such a diftrac-
“unfolded” into one with the angle of departure as the
third parameter-coordinate. Calculations made on this tion requiring precise tuning of the optical system. With
basis pertaining to propagation of radio waves along the M, = 1200x10°'* s°/g. the acoustic frequency for diffrac-
Khabarovsk-Irkutsk return route are shown to yield tion of 633 nm light in this crystal is {,, = 38 MHz. In this
much clearer results. in terms of graphical resolution, experiment the light beam of a He-Ne laser passed
than do calculations based on the conventional represen- through a mechanical beam chopper. a polarizer. a
tation of trajectories in the (x.7) plane. The same concept quartz polarization plate. and a diaphragm into the
iS Subsequently applied to construction of integral paratelluride crystal acting as an acoustooptic cell with
caustic short-wave asyrptotes. using an interference the optical axis in the [OOT] direction. the angle of