Assessment of X-band earth-satellite link rain attenuation prediction in Malaysia
Predicted rain fade values for an Earth-satellite link operating at X-band frequency had been generated using the latest ITU-R Recommendation, P618-11. Rain fade values for the very same link were also estimated using the "radar-derived attenuation" technique. The radar technique inv...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
INSI Publications
2014
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/40699/ http://irep.iium.edu.my/40699/ http://irep.iium.edu.my/40699/1/008-AJBAS-Published.pdf |
| Summary: | Predicted rain fade values for an Earth-satellite link operating at X-band
frequency had been generated using the latest ITU-R Recommendation, P618-11. Rain
fade values for the very same link were also estimated using the "radar-derived
attenuation" technique. The radar technique involves the exploitation of vertical
polarization S-band meteorological radar reflectivity information to calculate the
possible rain attenuation along the satellite propagation paths. All estimated rain fade
values were then compared with the actual measured signal of RazakSAT’s X-band
satellite transmission. The measured X-band (8 GHz) transmission signals were
collected and analyzed at the Malaysian National Space Agency (NSA) space center.
Objective: Preliminary findings concerning the feasibility of each estimation
technique are presented in this paper. The research also attempts to investigate the
validity of the mentioned rain attenuation estimation techniques. Results: Preliminary
findings concerning the feasibility of each estimation technique are presented in this
paper. The research also attempts to investigate the validity of the mentioned rain
attenuation estimation techniques. Conclusion: Such knowledge can be considered
critical for the design of reliable Earth-Space communication link and certainly can be
used in the preliminary proposition plan for the link designers as well as engineers. |
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