NAVIGATION SHARING PROSPECTS GLONASS AND PSEUDOLITES FIELDS FOR NAVIGATION AND LANDING OF AIRCRAFT IN ARCTIC

2018 ◽  
pp. 13-17
Author(s):  
V. I. Baburov ◽  
N. V. Vasileva ◽  
N. V. Ivantsevich
Keyword(s):  
Arctic Region ◽  
Signal Propagation ◽  
Simulation Modelling ◽  
Limited Range ◽  
Propagation Path ◽  
The Arctic ◽  
Polar Regions ◽  
Navigation Systems ◽  
Arctic Conditions ◽  
The Arctic Region

In view of the development of the Arctic Region the problem of aircraft (AC) navigation support under arctic conditions throughout the flight, including the landing stage, acquires special momentum. Given that land-based navigation systems have a limited range which does not cover the Arctic Region and are significantly inferior to satellite radio navigation systems (SRNS), SRNS user navigation equipment (UNE) becomes extremely important for AC navigation and landing. The functioning of SRNS UNE in the polar regions is determined by the characteristics of the satellite signal propagation path under arctic conditions and considerable radio signal reflection from the underlying surface. Multipath errors are of special significance for low satellite elevations. If low satellites are excluded from processing by UNE while maintaining acceptable positioning accuracy, both the integral accuracy rates and accessibility may be improved. The paper analyses the composition and information characteristics of working satellite constellations in integrated GLONASS and pseudolites positioning in the Arctic region of Russia. Our study performed by simulation modelling has established considerable redundancy of working constellations at the nominal value of admissible satellite elevation. This factor has been studied for forming controllable working constellations in aircraft on board navigation and landing complex.

Local territorial navigation system for regional airfields of the Arctic region RF

2021 ◽  
Author(s):  
V.N. Skosyrev ◽  
R.O. Stepanov ◽  
V.A. Usachev
Keyword(s):  
Arctic Region ◽  
Satellite Navigation ◽  
The Arctic ◽  
Communication Line ◽  
Navigation Systems ◽  
Control Center ◽  
Local Navigation ◽  
The Creation ◽  
New Generation ◽  
The Arctic Region

The specific conditions peculiar to the Northern regions create a number of difficulties in the functioning of the information airfield structure based on the traditional complex of navigation aids. These difficulties are caused by the unstable operation of satellite navigation systems in the Arctic region and territorial fragmentation. There is an urgent need to develop new approaches and technical means for the deployment of local navigation systems that ensure the operation of airfields with low traffic and difficult flight conditions. The aim of the study is to develop approaches to the creation of a new generation of multifunctional radar systems for the organization of a local navigation and information system at the airfields of the Arctic region, consisting of a ground-based multifunctional station, a portable small-sized terminal installed on board the aircraft and a board-to-ground communication line. This article proposes a promising navigation and territorial system for Arctic airfields, based on a new generation of information tools, including multifunctional radar stations. The proposed local territorial navigation and system is based on the information of the ground-based multifunctional airfield control radar. The information is transmitted to a portable small-sized terminal installed on board the aircraft. In this system, when transmitting the current situation to the on-board terminal from the multifunctional radar, which is linked to the airfield control center, it provides a safer implementation of the approach and landing modes at Arctic airfields, including in the complete absence of satellite navigation. The implementation of the proposed principles and technical solutions will enable the creation of a new generation of technical tools and the introduction of new organizational approaches to the creation of local navigation systems.

scholarly journals Sources: Antarctica and the Arctic Circle: A Geographic Encyclopedia of the Earth's Polar Regions

2015 ◽  
Vol 54 (4) ◽  
pp. 79
Author(s):  
Lisa Euster
Keyword(s):  
Social Sciences ◽  
Applied Sciences ◽  
Large Range ◽  
Arctic Region ◽  
Natural Sciences ◽  
The Arctic ◽  
Central Feature ◽  
Polar Regions ◽  
Vast Area ◽  
The Arctic Region

Although calling itself a geographic encyclopedia, the scope of this two-volume set is broader than such a designation suggests. Hund has attempted to encompass a large range of information about a vast area, perhaps a bit much for a modest two-volume set. Attempting to address in a meaningful way topics in the humanities, social sciences, natural sciences, and applied sciences for both poles in approximately 350 entries and fewer than 800 pages is ambitious. His stated "central feature . . . the original inhabitants of the Arctic region" (xi) would, alone, merit a work of this size. John Stewart's larger, two-volume Antarctica: An Encyclopedia, 2nd ed. (McFarland, 2011) is more limited in both geographical and topical scope.

scholarly journals The role of tropopause polar vortices in the intensification of Summer Arctic cyclones

2021 ◽  
Author(s):  
Suzanne L. Gray ◽  
Kevin Hodges ◽  
Jonathan Vautrey ◽  
John Methven
Keyword(s):  
Three Dimensional ◽  
Arctic Region ◽  
The Arctic ◽  
Polar Regions ◽  
Synoptic Scale ◽  
Coherent Vortices ◽  
Cyclone Genesis ◽  
Ecmwf Reanalysis ◽  
The Arctic Region

<p>Human activity in the Arctic is expected to increase as new regions become accessible, with a consequent need for reliable forecasts of hazardous weather. Arctic cyclones are synoptic-scale cyclones developing within or moving into the Arctic region. Meso- to synoptic-scale tropopause-based coherent vortices called tropopause polar vortices (TPVs) are frequently observed in polar regions and are a proposed mechanism for Arctic cyclone genesis and intensification. While the importance of pre-existing tropopause-level features for cyclone development, and their existence as part of the three-dimensional mature cyclone structure, is well established in the mid-latitudes, evidence of the importance of pre-existing TPVs for Arctic cyclone development is more limited. Here we present a climatology and characteristics of summer Arctic cyclones and TPVs, produced by tracking them in the latest global ECMWF reanalysis (ERA5), and determine the role of pre-existing TPVs in the initiation and intensification of these cyclones.</p>

scholarly journals Possible Effects of Sea Ice on Concrete Used in Arctic Conditions

Proceedings ◽  
2019 ◽  
Vol 34 (1) ◽  
pp. 13
Author(s):  
Vasiola Zhaka ◽  
Ankit Kothari ◽  
Andrzej Cwirzen
Keyword(s):  
Sea Ice ◽  
Freezing Point ◽  
Construction Material ◽  
Arctic Region ◽  
Weather Conditions ◽  
The Arctic ◽  
Arctic Conditions ◽  
Characterization Of Properties ◽  
The Arctic Region

The Arctic region is receiving an increasing attention due to the diminishing area of the permanent ice and easing access to various natural resources including especially oil, gas and rare metals. The nearest future will require building a significant number of new harbors and other structures related to sea operations and exploration. Harsh weather conditions including especially extreme freezing temperatures, snowfall and ice formation impose demanding requirements, which must be taken into account while designing, building and maintaining those structures. Concrete is the main construction material used for harbor structures. Unfortunately, the usage of Portland cement, which is the main cementitious binder used for concrete, it involves hardening processes, which are controlled by the hydration reactions. The hydration needs water and temperatures above freezing point, which impose serious limitations in the arctic environment. Furthermore, later exposure to the arctic conditions and especially to ice may impair its long-term durability and thus the sustainability of built structures. The present work focuses on characterization of properties of sea ice forming in harbors located in the Arctic region and on identification of possible implications on concrete material during the construction phase but also in long-term exploitation.

Soviet terms for the north of the USSR

Polar Record ◽  
1961 ◽  
Vol 10 (69) ◽  
pp. 609-613 ◽  
Author(s):  
T. E. Armstrong
Keyword(s):  
Arctic Region ◽  
The Arctic ◽  
Polar Regions ◽  
Tree Line ◽  
Precise Meaning ◽  
The North ◽  
Soviet Literature ◽  
Definition Of ◽  
Extreme North ◽  
The Arctic Region

There has for long been discussion among Soviet geographers on the definition of various terms in Soviet usage to indicate the northern part of the USSR. Some of these terms—“the Arctic” [Arktika], “the Arctic region” [arkticheskaya oblast'], “the sub-Arctic” [subarktika], “the polar regions” [Zapolyar'ye]—are normally used to denote areas defined according to physical criteria. Such criteria are similar to those usually applied outside the USSR, such as the “10° C. July isotherm”, the “tree line”, or the “limit of continuous permafrost”, and, again as in the non-Soviet world, the terms have no generally accepted precise meaning and must be defined by each user. But in addition to these terms for natural regions, there are certain terms in predominantly economic and administrative usage: “the north” [sever], “the far north” [dal'niy sever], “the extreme north” [krayniy sever], “the northern marches” [severnyye okrainy], and “the Soviet north” [sovetskiy sever]. Some explanation of their current connotations may be helpful to those studying Soviet literature.

The International Geophysical Year

1957 ◽  
Vol 10 (1) ◽  
pp. 17-30 ◽  
Author(s):  
Harold Spencer Jones
Keyword(s):  
Arctic Region ◽  
The Arctic ◽  
Polar Regions ◽  
International Polar Year ◽  
International Geophysical Year ◽  
Primary Object ◽  
International Polar ◽  
Meteorological Observations ◽  
One Year ◽  
The Arctic Region

In 1874, the Austrian arctic scientist, Weyprecht, on his return from an Austro-Hungarian polar expedition stated that, though many countries had sent expeditions into the polar regions at great expense and involving appreciable hazards to those participating, no important contributions to knowledge had resulted from them. They had done a certain amount of mapping and obtained a few meteorological observations but the primary object had been, as a matter of national prestige, to plant the flag nearer to the Pole than had been reached before. In his opinion what was needed for the advancement of knowledge about the polar regions was that nations should collaborate in sending expeditions to various parts of the arctic region to make observations throughout the whole of one year. Largely because of his persistent advocacy of this view, the value of the proposal came to be recognized, and as a result the enterprise known as the First International Polar Year was developed. A number of countries combined to send expeditions to establish observing stations at selected points in the arctic region to make observations throughout the year 1882–3 in meteorology and geomagnetism and also of the aurora. The observations made during this Polar Year contributed appreciably to knowledge of geomagnetism and of meteorology.

Prospects for the use of electro-technological heating systems in the arctic conditions

2019 ◽  
Vol 2 (2) ◽  
pp. 86-101
Author(s):  
S. G. Konesev ◽  
P. A. Khlyupin
Keyword(s):  
Power Efficiency ◽  
Thermal Power ◽  
Arctic Region ◽  
The Arctic ◽  
Thermal Heating ◽  
Heating Systems ◽  
Far North ◽  
Industrial Fire ◽  
Arctic Conditions ◽  
The Arctic Region

Introduction. The co-authors analyze the sources and consumers of thermal power in the Far North and the Arctic region. The co-authors describe industrial, fire, and environmental hazards coming from existing heating systems that consume burned hydrocarbons. The co-authors propose an alternative system that uses electro-thermal technologies.Subject of research. Electro-thermal systems designated for the maintenance of the operation of industrial and social facilities in the Far North and the Arctic region.Objective. Substantiation of the need to have flame heating systems, which are currently in operation, replaced by highly efficient, safe and eco-friendly electro-thermal heating systems in the Far North and the Arctic region.Materials and methods. The co-authors analyze thermal power generation in the environment characterized by extremely low temperatures.Findings. The co-authors describe several heating sources that comprise electro-thermal technologies, applicable in the Far North and the Arctic region.Conclusions. Electro-thermal heating systems boost heat transmission and power efficiency of heating systems due to their high controllability. They can also reduce the environmental impact, caused by strong heat flows produced by flame furnaces onto the climate of the Far North and the Arctic region.

scholarly journals Analysis and Research on Cold Proof Design of Polar Marine Machinery

2021 ◽  
Vol 2125 (1) ◽  
pp. 012060
Author(s):  
Li Yu ◽  
Wenyong Guo ◽  
Xinglong Pan ◽  
Hantao Chen
Keyword(s):  
Arctic Region ◽  
Electric Heating ◽  
The Arctic ◽  
Polar Regions ◽  
Constant Heat ◽  
Key Technology ◽  
Strategic Position ◽  
Electric Heat ◽  
Energy Exploitation ◽  
The Arctic Region

Abstract Polar marine machinery is an important equipment for China to participate in Arctic energy exploitation. The Arctic region is rich in natural resources and has a very important strategic position. As an important equipment for passage and exploitation of energy, its key technology is particularly important. As a special ship sailing in polar regions, polar ships generally adopt electric heat tracing measures due to the adverse environment in polar regions. The deck machinery and facilities shall be protected against cold. This paper mainly studies the convection of flat plate members under constant heat flow electric heating. The research results can be popularized and applied to the cold protection of most upper facilities of polar ships.

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