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Instruments

Kumpula C-band weather radar (KUM)

Kumpula_radar
(Vaisala Weather Radar prototype)
State of the art dual-polarization Doppler weather radar.

Kumpula C-Band radar was installed in December 2004 at the University of Helsinki Kumpula campus. It is located on the top of the Department of Physics building, 59 m above the sea level (30 m above ground level) .

Antenna
Center fed parabolic reflector
Diameter = 4.20 m
Beamwidth = 1.05 deg
Gain ~ 44.5 dB
Feed is corrugated horn with OMT
polarization Horizontal or Simultaneous (SHV)
ICPR < -35 dB
RCP8 antenna control
Transmitter
Klystron air cooled 250 kw peak power
Freq = 5610 MHz (5.348 cm)
Duty cycle limit = .005
Pulse length = 0.5 - 20.0 us
PRF = 200 - 2000 Hz
Receiver
Antenna Mounted Receiver
(Sigmet RVP8)
Horizontal and Vertical parallel receivers
MDS  -110 - -130 dBm


Transportable C-band Weather Radar

Jarvenpaa_Radar


Single polarization weather radar system.



Antenna
Diameter     =  4.3 m
Gain             ~  44.5 dB
Beamwidth =  0.9 deg
Transmitter
C-band, magnetron
Peak power - 250 kW
Pulse width  - 0.5 - 2 us
Receiver
Sigmet RVP7
Dynamic range 72 - 80 dB
MDS  -105 - -115 dBm


Particle Video Imager             

PVI