Telecommunication Journal, 48. sējums,1-356. lapaInternational Telecommunication Union., 1981 |
No grāmatas satura
1.–3. rezultāts no 51.
200. lappuse
... orbit , because the achievable accuracy of satellite station - keeping performance requires relatively - wide antenna beams . These cause interference to an equally wide area of the geostationary orbit . Therefore closer positioning in ...
... orbit , because the achievable accuracy of satellite station - keeping performance requires relatively - wide antenna beams . These cause interference to an equally wide area of the geostationary orbit . Therefore closer positioning in ...
318. lappuse
... orbit . The payloads will eventually include a manned orbital laboratory ( Spacelab ) , satellites for injection into Earth orbit and spacecraft destined for interplanetary exploration . Each of NASA's presently - projected fleet of ...
... orbit . The payloads will eventually include a manned orbital laboratory ( Spacelab ) , satellites for injection into Earth orbit and spacecraft destined for interplanetary exploration . Each of NASA's presently - projected fleet of ...
343. lappuse
... orbit : 792 kg ; solar cells ( 610 W ) ; Ni - Cd batteries in geostationary orbit at 127 ° W where it will replace Comstar - 1 which will be re- positioned at 95 ° W 6 GHz band ( up - link ) 4 GHz band ( down - link ) 19 and 28 GHz ...
... orbit : 792 kg ; solar cells ( 610 W ) ; Ni - Cd batteries in geostationary orbit at 127 ° W where it will replace Comstar - 1 which will be re- positioned at 95 ° W 6 GHz band ( up - link ) 4 GHz band ( down - link ) 19 and 28 GHz ...
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