scholarly journals SATELLITE SEGMENT OF NATIONAL INFORMATION INFRASTRUCTURE. APPROACHES TO IMPLEMENTATION

2020 ◽  
pp. 14-46
Author(s):  
A.M. MELNYK ◽  
Keyword(s):  
Satellite Communications ◽  
Information Infrastructure ◽  
Technology Standards ◽  
Satellite Telecommunication ◽  
National Information Infrastructure ◽  
Telecommunication Systems ◽  
Radiated Power ◽  
Satellite Télécommunication ◽  
National Information ◽  
Communications System

It is proved that the satellite segment is a necessary component of the national information infrastructure. From this position, the state and development trends of satellite telecommunication systems and satellite channel organization technologies are analyzed. It is shown that there are two ways to build a satellite segment: based on the use of leased resources of satellite operators operating in the satellite communications market; based on the resources of the national satellite communications system, which still needs to be created. It is shown that satellite telecommunication systems have a steady tendency to increase the number of spacecraft, until the launch of “heavyˮ satellites with a payload of more than 70 transponders and to increase the frequency resource. The diagram of satellites location density of in orbit is given. In the case of orientation to rent the resources of active spacecraft, the criteria for their selection is indicated. The arc of the geostationary orbit, on which the satellite should be selected, is calculated. For satellites located on this arc, diagrams of equivalent isotropically radiated power values in the C and Ku bands, which they provide in Ukraine, are shown. A list of satellites that you can focus on, recommendations for selection and a list of recommended for the satellite segment is indicated. The technology standards used in payload and methods for organizing satellite communications channels is noticed. To select the parameters of the satellite segment, the results of calculations of the effectiveness of signal-code structures are provided. Approaches to creating a satellite segment of the national information infrastructure are proposed. It is shown that the orientation to the Lybid national satellite does not make sense; a new frequency-orbit resource is required. The types of platforms that can be used on a national satellite are considered.

ENI Company

2011 ◽  
pp. 18-30
Author(s):  
Ook Lee
Keyword(s):  
South Korea ◽  
Information Infrastructure ◽  
Related Question ◽  
The Internet ◽  
It Infrastructure ◽  
National Information Infrastructure ◽  
Mail Service ◽  
National Information ◽  
E Mail

ENI Company is an electronic commerce firm in South Korea. ENI Company provides English news items and English lessons to the subscribers through daily e-mail service that includes free English news-related question and answer sessions via e-mail. This case study deals with the struggle of this firm to establish and sustain its business in a less-developed national information infrastructure. Information on national information infrastructure and the Internet in South Korea is provided in order to facilitate understanding of the difficulty that ENI Company faces while conducting e-commerce in South Korea. The chronology of ENI Company evolution is described and the organizational structure of ENI Company is also presented. The marketing of ENI Company’s products that is the biggest challenge for the firm is also discussed. This case is a good example of how to conduct an e-commerce in a county where national IT infrastructure is not ready for it.

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