Метод повышения разрешающей способности по дальности радиоимпульсных датчиков систем ближней радиолокации

The description of a new method for increasing the resolution of radio pulse sensors (RPS) designed for short- range radar systems (SRRS) for detecting and measuring motion parameters of location objects is presented. The essence of the method is that the controlled area of space with the targets located in it is periodically irradiated with probing radio pulses, and during their radiation, radio pulses reflected from the targets are simultaneously received and divided into two quadrature channels. Next, they are mixed with probing radio pulses, and the time-overlapping parts of these radio pulses are converted into the region of low Doppler frequencies in the form of two quadrature video pulses. Then, the quadrature video pulses received in these channels are sampled by amplitude, stored at multiple points in time and digitally processed according to the proposed algorithm. The method is implemented in the RPS made on the basis of a horn-lens antenna, a Doppler receiving and transmitting module with quadrature outputs of converted signals, a synchronization and pulse generation unit, as well as a digital signal processing unit. The RPS can be used in onboard (for example, automotive) SRRS designed to detect moving targets, measure the distance to them, as well as determine the speed and direction of movement. The results of experimental studies have been obtained on the example of the 8-mm autodyne RPS made on the basis of the oscillator on a planar Gann-diode. Bogatyrev E. V., Vishnyakov D. S., Ignatkov K. A., Noskov V. Ya. Method of increasing the range resolution of radio pulse sensors of short-r ange radar systems. Ural Radio Engineering Journal. 2023;7(2):166–190. (In Russ.) DOI: 10.15826/urej.2023.7.2.005.Представлено описание нового метода повышения разрешающей способности радиоимпульсных датчиков (РЛД), предназначенных для систем ближней радиолокации (СБРЛ) обнаружения и измерения параметров движения объектов локации. Суть метода состоит в том, что контролируемую область пространства с находящимися в ней целями периодически облучают зондирующими радиоимпульсами, причем во время их излучения одновременно принимают отраженные от целей радиоимпульсы и разделяют их на два квадратурных канала. Далее смешивают их с зондирующими радиоимпульсами, преобразуют перекрывающиеся по времени части этих радиоимпульсов в область низких доплеровских частот в виде двух квадратурных видеоимпульсов. Затем полученные в этих каналах квадратурные видеоимпульсы дискретизируют по амплитуде, запоминают во множестве моментов времени и подвергают цифровой обработке по предложенному алгоритму. Метод реализован в РЛД, выполненном на базе рупорно-линзовой антенны, доплеровского приемопередающего модуля с квадратурными выходами преобразованных сигналов, блока синхронизации и формирования импульсов, а также блока цифровой обработки сигналов. РЛД может найти применение в бортовых СБРЛ (например, автомобильных), предназначенных для обнаружения движущихся целей, измерения расстояния до них, а также определения скорости и направления движения. Результаты экспериментальных исследований получены на примере автодинного РЛД 8-мм диапазона, выполненного на основе генератора на планарном диоде Ганна. Богатырев Е. В., Вишняков Д. С., Игнатков К. А., Носков В. Я. Метод повышения разрешающей способности по дальности радиоимпульсных датчиков систем ближней радиолокации. Ural Radio Engineering Journal. 2023;7(2):166–190. DOI: 10.15826/urej.2023.7.2.005

A person in the information reality

The aim of the study – to study the problem 936 in order to find new opportunities for mutual understanding and conflict resolutionЦель исследования - изучить проблему с целью поиска новых возможностей взаимопонимания и разрешения конфликтов

MULTILAYER STRUCTURES BASED ON PCM WITH TUNABLE REFLECTION AND TRANSMISSION CHARACTERISTICS FOR FULLY OPTICAL ROUTING DEVICES

The reported study was funded by RFBR according to the research project # 19-37-60023

Sanitary protection of the territory of Russian Federation. Report 2. The differentiation of the territory of a region of Russian Federation for risk of diseases dangerous for people

The risk of emergency situations in the sphere of sanitary-epidemiological welfare associated with diseases dangerous for population varies for different municipalities of a region of Russian Federation. Therefore a differentiation of a region for three types of territories (A, B, C) is necessary. Adequate number of sanitary protection measures is determined for each type of territories. The purpose of this study was the development of methodical reception for differentiation of a region of Russian Federation. Point scoping of criteria of external and. internal epidemiological risks for each of municipality is proposed as this method. Criteria of external epidemiological risk allow to take into account the probability of the importation of infectious diseases, requiring measures for sanitary protection of the territory. Criteria of internal epidemiological risk reflect both actual and. potential dangers: morbidity, the registration of particular nosologic forms of diseases in animals and. detection of pathogens in the living and. non-living environment objects. Assessment of internal risk is carried out in the analysis of information about epizootic and. epidemiological situation of infectious diseases, the list of which is proposed, with, consideration of their epidemiological significance and. can be used for any Russian Federation region. According to the results of total assessment of risks for each of municipalities the complex index of epidemiological risk (CIER) is determined. On the basis of CIER the territory type (A, B, C) is determined. Type A, B or C defines for the municipality the volume of measures for sanitary protection of the territory on the basis of a sufficient level for preparedness of forces and means of public health institutions. The method, based, on the assessment of external and. internal epidemiological risks, that allows to differentiate the region of Russian Federation, at municipal level for risk of diseases dangerous for people, is proposed, as the result of this work. A new methodical approach, will contribute to the increase of the preparedness of public health, institutions to emergency situations in the sphere of sanitary-epidemiological welfare associated, with, diseases dangerous for people

First Observation of the Doubly Charmed Baryon Xi_cc^+

We observe a signal for the doubly charmed baryon Xi_cc^+ in the charged decay mode Xi_cc^+ --> Lambda_c^+ K- pi+ in data from SELEX, the charm hadro-production experiment at Fermilab. We observe an excess of 15.9 events over an expected background of 6.1 +/- 0.5 events, a statistical significance of 6.3sigma. The observed mass of this state is (3519 +/- 1) MeV/c^2. The Gaussian mass width of this state is 3MeV/c^2, consistent with resolution; its lifetime is less than 33fsec at 90% confidence.Comment: 5 pages, 3 figures, accepted for publication in Physical Review Letter

Tactics for Specialized Anti-Epidemic Team (SAET) Deployment under the Conditions of Large-Scale High Water in the Far Eastern Territory. Communication 1. Peculiarities of the Rospotrebnadzor SAET Operation in the Amur Region

Abnormal rainfall flood in the Amur-River region, July-September, 2013, set the scene for aggravation of epidemiological situation on diarrheal diseases, as well as droplet spread infections, and natural-focal infections and diseases, common for both humans and animals. To stabilize the situation in flooded areas of three territorial entities in the Far East region involved were SAETs of the Irkutsk Research Anti-Plague Institute: SAET 1 (the Amur region) and SAET 2 (the Khabarovsk Territory and Jewish Autonomous Region). Within the frames of Rospotrebnadzor Decree implementation SAET 1 was transported to the Amur Region by means of airlift. Mobile unit performed its operations independently, in an autonomous mode. Laboratory facilities were set up on the base of pneumo-framed modules. The aim of the SAET consisted in carrying out a complex of measures related to sanitary-hygienic and epidemiological monitoring in the territory of the municipal entities devastated by floods. SAET 1 completed its mission successfully

First Measurement of pi e -> pi e gamma Pion Virtual Compton Scattering

Pion Virtual Compton Scattering (VCS) via the reaction pi e --> pi e gamma was observed in the Fermilab E781 SELEX experiment. SELEX used a 600 GeV/c pi- beam incident on target atomic electrons, detecting the incident pi- and the final state pi-, electron and gamma. Theoretical predictions based on chiral perturbation theory are incorporated into a Monte Carlo simulation of the experiment and are compared to the data. The number of reconstructed events (9) and their distribution with respect to the kinematic variables (for the kinematic region studied) are in reasonable accord with the predictions. The corresponding pi- VCS experimental cross section is sigma=38.8+-13 nb, in agreement with the theoretical expectation sigma=34.7 nb.Comment: 10 pages, 12 figures, 4 tables, 25 references, SELEX home page is http://fn781a.fnal.gov/, revised July 21, 2002 in response to journal referee Comment

Observation of the Cabibbo-suppressed decay Xi_c+ -> p K- pi+

We report the first observation of the Cabibbo-suppressed charm baryon decay Xi_c+ -> p K- pi+. We observe 150 +- 22 events for the signal. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600 GeV/c Sigma- beam. The branching fractions of the decay relative to the Cabibbo-favored Xi_c+ -> Sigma+ K- pi+ and Xi_c+ -> X- pi+ pi+ are measured to be B(Xi_c+ -> p K- pi+)/B(Xi_c+ -> Sigma+ K- pi+) = 0.22 +- 0.06 +- 0.03 and B(Xi_c+ -> p K- pi+)/B(Xi_c+ -> X- pi+ pi+) = 0.20 +- 0.04 +- 0.02, respectively.Comment: 5 pages, RevTeX, 3 figures (postscript), Submitted to Phys. Rev. Let

Results of Work of the Specialized Anti-Epidemic Teams of the Irkutsk Research Anti-Plague Institute in the Amur Region, Khabarovsk Territory and the Jewish Autonomous Region in 2013

Displayed are the major results of work of the specialized anti-epidemic teams from Irkutsk Research Anti-Plague Institute, aimed at the provision for sanitary-epidemiological welfare of the population in the Amur Region, Khabarovsk Territory and the Jewish Autonomous Region, devastated by the abnormally high water, in 2013. Represented are the data on sanitary-hygienic and epidemiological monitoring over the territory of the worst-hit areas. Revealed are the findings as regards examination of water samples obtained from the centralized and decentralized water supplies, surface water reservoirs and treatment facilities for presence of Vibrio cholerae , and of clinical material - for intestinal viruses, as well as serological screening of the decreed groups and foreign citizens temporarily working in the Russian Federation. Presented are the results of epizootiological-epidemiological inspection of the endemic areas for natural-focal infections, and also potentially hazardous areas as concerns anthrax, situated within the bonds of the flooded territories. Total of 3626 samples have been tested, 15502 analyses for 23 nosological entities have been performed