Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)

  • 2005.10a
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  • Pages.564-566
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  • 2005
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  • 1226-9743(pISSN)
Korean Society of Remote Sensing (대한원격탐사학회)
권호 표지

THE RELATION BETWEEN HPA AND COMS MULTI-CARRIER

  • Park Durk-Jong (Satellite Mission Operation Department, Korea Aerospace Research Institute) ;
  • Yang Hyung-Mo (Satellite Mission Operation Department, Korea Aerospace Research Institute) ;
  • Hyun Dae-Wan (Satellite Mission Operation Department, Korea Aerospace Research Institute) ;
  • Ahn Sang-Il (Satellite Mission Operation Department, Korea Aerospace Research Institute) ;
  • Kim Eun-Kyu (Satellite Mission Operation Department, Korea Aerospace Research Institute)
  • Published : 2005.10.01
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Abstract

The relation between HPA (High Power Amplifier) and COMS (Communication Ocean Meteorological Satellite) multi-carrier is analyzed in this paper. MODAC (Meteorological and Ocean Data Application Center) has a primary mission to transmit processed data, HRIT (High Rate Information Transmission) and LRIT (Low Rate Information Transmission), which is normalized and calibrated by pre-processing. It is also replaced with the SOC (Satellite Operation Center) in emergency case and can transmit the command and ranging tones for operation of COMS. From the result of simulation with modelled HPA, it is found that the multi-carrier in one HPA can give rise to an inter-modulation which makes harmonic and spurious elements increase in-band. Under the environment of these increased parasitic elements, the degradation of multi-carrier's quality is estimated from the ratio of the amount of noise to total output power of HPA.

Keywords