About CRMS

SRMC

The panoramic view


Satellite Radio Monitoring Center image

History

   1998 ~ present

 

  • May 1998

    Formulation of the basic establishment plan

  • Dec 2001

    Organization of the Satellite Radio Monitoring Center

  • June 2002

    Completion of the construction

  • Aug 2002

    Start of the GSO satellite radio monitoring

  • Sept 2002

    Host for the 5th international space radio monitoring meeting in Seoul

  • Dec 2009

    Introduction of the mobile satellite radio monitoring system

  • Aug 2016

    Introduction of the Non-GSO satellite radio monitoring system

  • Sept 2016

    Host for the 18th international space radio monitoring meeting in Seoul

  • Feb 2018

    Introduction of the harmful interference localization system

Organization Chart

Director General

  • Support Division
    • HR Management and
      Accounts
    • Building and Facilities
      Management
  • Satellite Management Division
    • Operation of the Monitoring
      System
    • Maintenance and Manage-
      ment of the Monitoring
      System
  • International Cooperation Division
    • Operation of Experiential Learning
      Programs
    • Public Relations and International
      Cooperations

Mission

  • - To monitor radio waves emitted from domestic and foreign satellites from 55°E to 160°W to find whether they are in compliance
      with the domestic & international regulations and specifications.
  • - To protect domestic satellites from harmful interferences.
  • - To contribute to the development of the satellite industry by accumulating satellite-related technology.

Monitoring Items

Orbit-position

  • - Orbital position of the satellite is determined through the angle measurements of the azimuth and elevation planes of the
      receiving antenna.

Radio waves

  • - Center frequency
    • Determination of the center frequencies of carriers
  • - Occupied bandwidth
    • Measurement of the width of a frequency band such that, below the lower and above the upper frequency limits, the mean powers
      emitted are each equal to 0.5% of the total mean power of a given emission
  • - Spurious emissions
    • Measurement of the emissions of a frequency or frequencies which are outside the necessary bandwidth and the level of which may
      be reduced without affecting the corresponding transmission of information
  • - Polarization
    • Distinction between different types of polarization which include linear (vertical, horizontal) polarization and circular (right-handed,
      left-handed) olarization Measurement of the tilt angle in the case of linear polarization
  • - EIRP (Equivalent Isotropically Radiated Power)
    • Calculation of the EIRP using received power, antenna gains, propagation losses and so on
  • - PFD (Power Flux Density)
    • Determination of the PFD using received power, effective antenna apertures and so on
  • - Modulation
    • Determination of the types of modulation signals
  • - Spectrum occupancy
    • Measurement of frequencies and time-related data regarding the occupancy of frequency bands
  • - Demodulation of broadcast signal
    • Recording the parameters for demodulation and informations of received broadcast signals (channel title, symbol rate, FEC,
      free or not, etc)

Ranges of frequencies

About srmc band, frequency Range table that provides
GSO Non-GSO
L band : 1.45 ~ 1.8 ㎓ (350 ㎒) 0.137~26.5GHz
S band : 2.17 ~ 2.655 ㎓ (485 ㎒)
C band : 3.4 ~ 4.8 ㎓ (1,400 ㎒)
X band : 6.7 ~ 7.75 ㎓ (1,050 ㎒)
Ku band : 10.7 ~ 12.75 ㎓ (2,050 ㎒)
Ka band : 17.7 ~ 21.2 ㎓ (3,500 ㎒)