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Active phased array antennas
51
Antenna phased arrays
51
Antennas
51
Atmospheric physics
51
Geophysics
Lower thermosphere
51
Radar systems
51
Transceivers
550
49
Continuous operation
26
Experiments
26
Horizontal variability
26
Independent control
26
Polar mesosphere summer echoes
26
Transceiver modules
26
Data acquisition system
25
Equilateral triangles
25
Half power beam widths
25
Sampling resolution
25
Spatio-temporal resolution
25
FOS Earth and related environmental sciences
2
ddc:550
2
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