GPS
GLONASS Grows to 21; Ground Testing of New GLONASS-K
March 25, 2010ISS Reshetnev, manufacturers of GLONASS satellites, reported that ground testing of the new GLONASS-K satellite is in progress.
According to the announcment, they are currently testing the antenna-feeder devices of the new satellite. Specialists have been conducting the necessary measurements of radio-frequency antenna characteristics of the spacecraft and checking their electromagnetic compatibility. Simultaneously, the company has produced two full-sized engineering and qualification GLONASS-K model spacecraft for thermal vacuum and dynamic tests. They are prototypes of the real flying satellite design, with the help of which will be worked out its operation in space. It is expected that the thermal vacuum tests, during which the next space vehicle will be tested with large temperature variations, will end in April this year. In May, dynamic testing will begin, which will test the stability of the satellite to vibration and acoustics, as well as its ability to withstand high loads during transportation and launch into orbit.
The launch of the first GLONASS-K satellite is currently scheduled for the fall of this year. It will be the first GLONASS satellite to broadcast using a new CDMA radio frequency design to enhance compatibility with GPS.
Meanwhile, GLONASS 716 has been returned to active, healthy service bringing the total number of
healthy GLONASS satellites to 21, the largest healthy constellation since 1997.
However, one of the satellites, GLONASS 722, only has healthy signals on its L1
frequency.
The next GLONASS triple launch is expected in August.
healthy GLONASS satellites to 21, the largest healthy constellation since 1997.
However, one of the satellites, GLONASS 722, only has healthy signals on its L1
frequency.
The next GLONASS triple launch is expected in August.
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