'Institute of Electrical and Electronics Engineers (IEEE)'
Abstract
Rain induced attenuation is the main reason for the
decrease of Space-Earth communication links’ received signal
strength. This is more perceptible in the tropical regions due to
copious heavy rainfall throughout the years. RazakSAT is a
Malaysian remote sensing satellite that utilizes two frequencies
which are the X-band and S-band. The X-band frequency is
conventionally set aside for military or government
organizations. This frequency differs from the common
commercial frequencies. The attributes of X-band satellite
communication hardware are expected to be designed specifically
for military operations. The appropriate margin should be
incorporated to ensure reliable and continual communication.
Rain induced attenuation data involving S-band and X-band
measurements from Malaysia RazakSAT’s satellite have been
analyzed. The rain attenuation at higher frequency X-band (8
GHz) was estimated from the values at 3 GHz (S-band) frequency
by the use of frequency scaling equation from established models.
The paper highlights the assessments of the two RazakSAT’s
satellite-Earth transmission link’s fluctuations during
precipitations. The main research objective is to derive the
appropriate frequency scaling equation of S-band to X-band
applicable in tropical environmen
