1. An improvised scattering study for elevation reliant on 3g communications through high altitude platform (hap)
Authors : M V Narayana
Pages : 141-145
DOI : http://dx.doi.org/10.21172/1.94.23
Keywords : Antenna bore point; QOS; Edge of coverage; Spacing radius; Radiation pattern; Subtended angle Abstract :Together with satellite and terrestrial communications, High Altitude Platform (HAP) evolved as a communication segment acting like a lower amplitude repeaters. As like satellite, HAP has wider footprint and maintains high elevation angles over a coverage area than terrestrial systems. Hence, distribution of HAP antenna gain significantly varies toward the edges of coverage area as elevation angle deviates. Besides, a change in spacing radius causes change in elevation angle, which ends up with dissimilar gain distribution over coverage. A high HAP antenna gain expected at user end to enhance quality of service, especially at the edges. Therefore, it is essential to study dependency among system parameters like spacing radius, elevation angle, subtended angle and distribution of gain. The paper enlightens on such dependencies and to be more specific, picked up three different spacing radii to search out best fit of spacing radius at stratospheric platform in terms of gain distribution. Additionally, three different HAP antennas bore point concepts, like bore pointing at SPP, at half of subtended angle and at center of cell, have proposed to adjust gain over coverage area while necessary.
Citing this Journal Article :M V Narayana, "An improvised scattering study for elevation reliant on 3g communications through high altitude platform (hap)", Volume 9 Issue 4 - February 2018, 141-145
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