08-02-2013, 03:15 PM
HIGH ALTITUDE PLATFORM SYSTEM (HAPS)- AN EMERGING TECHNOLOGY IN WIRELESS COMMUNICATION
HIGH ALTITUDE PLATFORM SYSTEM.docx (Size: 53.41 KB / Downloads: 31)
ABSTRACT
HAPS (‘terrestrial pseudo satellites’) are the airships or airplanes operating in the stratosphere at
Altitudes 17-22 km flying against the wind and maintaining fixed rotating circle the paper focus
On the basic architecture, applications and advantages of HAPs and on the critical issues to be
Considered for the implementation of HAPs. One of the key issues which will determine the
Ultimate economic viability of HAPs for communication delivery is the platform station
Keepingi.e. placing the platform at stratospheric altitudes and fixing it reliably above the
Coverage area in a cost-efficient, safe and sustained manner.
Wind plays a major role in the station keeping of HAP. HAP should be placed at heights where
There is minimum wind-load. We have taken up the task of analyzing the data of wind profiles
For a decade of years (1995-2004) available over 32 stations in India. This was done by writing a
Visual C++ program and optimal height is proposed for each station. After analyzing the
Complete data available for the whole country an optimal height range of 18-21Km is proposed
For placing a HAP. So,undoubtfully HAPS is the new “AASTRA”developed by communication
Engineers.