| Summary: | 碩士 === 國立中央大學 === 太空科學研究所 === 90 ===
From the signals transmitted by the experimental communication payload (ECP) on the ROCSAT-1, the study analyzed Beacon Signal with frequency of Ka-band. We discussed the change of the received power by analyzing the beacon signal from the Transportable Ground Terminal and the Remote Ground Terminal during 2000 to 2001. Also, we made some analysis of Preliminary Results of the scintillation.
The data indicated that the power declined with time and in the observation of the scintillation, we discovered the slope of the spectrum matched the ideal number of —8/3.Moreover, we found that the wider the bandwidth, the stronger the predicted signal would be affected. Besides, we drew a conclusion of t0 = -1.1713 + 0.0047 Ns on the relation between the attenuation of atmosphere and the atmospheric refractive index. In the comparison of TGT and RGT to 19.5 GHz Radiometers, we found the instability of the TGT and RGT system.
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