satellite communication

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Across
  1. 3. first satellite of India
  2. 5. Area covered by satellite
  3. 7. provides an average value of angular position of satellite wrt perigee
  4. 8. the equipment used to provide the service for which the satellite has been launched
  5. 9. point on earth vertically under satellite
  6. 13. these satellites can cover high altitudes
  7. 14. system partly present on satellite and partly on earth
  8. 16. Rotation of a geosynchronous satellite means
  9. 17. Third stage of satellite launching
  10. 18. angle on horizontal plane in antenna look angles
  11. 19. Orbit direction is opposite to earth’s rotation
  12. 21. At presentthe radio-frequency band mainly used by most satellites
  13. 22. elevation for geostationary orbit with equator
Down
  1. 1. is the rotation of the vehicle about its vertical axis
  2. 2. Vertical lines on earth are called
  3. 4. The point where the orbit crosses the equatorial plane going from south to north
  4. 6. second stage of satellite launching
  5. 10. vertical angle in antenna look angles
  6. 11. First satellite of world
  7. 12. horizontal lines on earth are called
  8. 15. orbit is direction as earth’s rotation
  9. 20. when day and night are of equal lengths