Abstract
E-Learning is aderivative of information technology and has been generally recognized as a modern tool for learning and teaching other than the conventional method of learning (which involves physical contact between the student and the instructor). The case study for the proposed system is the African Regional Centre for Space Science and Technology Education in English (ARCSSTE-E) in Nigeria. Thepurposeof the centre is to develop quality indigenous space scientists in English speaking African countries for the development of various application of space science and technology for sustainable national and regional development. Therefore, to accomplish this, the centre plans to develop the skills and knowledge of candidates in four significantareasof space science and technology such as; Remote Sensing & GIS, Satellite Meteorology and Global Climate, Satellite Communication and Basic Space and Atmospheric Sciences. This paper presents the VSAT architecture, link margin calculations and link budget analysis done to implement the proposed VSAT based E-learning system for the Centre. This is a conceptual frame work. The proposed system is to enhance the centre with tremendous potential to reach out to people within Anglophone countries that cannot make it down to ARCSSTE-E due to lack of sponsorship, constraint in time, distance,Financial or other challenges.
Highlights
In satellite communications, microwaves, radio waves, infrared and visible light are used to carry information or data such as text, sound, pictures and videos [1,2]
This paper presents the VSAT architecture, link margin calculations and link budget analysis done to implement the proposed VSAT based Elearning system for the Centre
THEORETICAL BACKGROUND This segment gives a review of the research study that had been done in the aspect of VSAT technology, radio wave propagation and link budget analysis
Summary
Microwaves, radio waves, infrared and visible light are used to carry information or data such as text, sound, pictures and videos [1,2]. The analogue signal is being encoded to digital signal (0s and 1s streams) which is sent to the carrier wave and transmitted. When the transmitted signal has been received it is decoded to analogue to recover the original signal. This phenomenon is applicable to the proposed VSAT based e-Learning system. To achieve the Centre’s goal, the Centre will need to employ a VSAT based eLearning system to reach out and develop the skills and knowledge of candidates within Anglophone African countries that cannot make it to ARCSSTE-E due to several reasons. The aim of this study is to design a conceptual framework of a VSAT based e-learning system for ARCSSTE-E in Nigeria. The following are theobjectives of this study; to determine the antenna size of the VSAT, the link margin, estimate the link budget analysis and model the VSAT link-architecture that will be used to implement the proposed system
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