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http://dx.doi.org/10.5515/KJKIEES.2009.20.3.313

Design of Downlink Channel for Transportable KOMPSAT Ground Station Using Sub-Carrier Signal  

Ahn, Sang-Il (Department of Radio Science & Engineering, Chungnam National University)
Park, Dong-Chul (Department of Radio Science & Engineering, Chungnam National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.20, no.3, 2009 , pp. 313-321 More about this Journal
Abstract
This paper describes the downlink design of a transportable small-sized KOMPSAT ground station using sub-carrier signal. Based on the analysis of the transmission modes of satellite real-time telemetry and range measurement signals, the downlink channel design of KOMPSAT ground station using sub-carrier signal was processed. By considering the threshold signal-to-noise ratio of real-time 2 kbps telemetry signal and the required signal-to-noise ratio for satellite range measurement, the small-sized KOMPSAT downlink channel with G/T value of 6.5 dB/K was designed. The real G/T of implemented ground station was proven to be 6.62 dB/K when measured using the Sun. Moreover, through interface test with KOMPSAT, the ground station has shown the required link performance for real-time telemetry acquisition using sub-carrier and was consequently evaluated to be adequate for a transportable small-sized KOMPSAT ground station.
Keywords
KOMPSAT; Satellite; TT&C; G/T; Sub-Carrier;
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