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Instrument: ELDORA : Electra Doppler Radar
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Description
ELDORA (Electra Doppler Radar) is an airborne, dual beam,
meteorological research radar developed jointly at the National
Center for Atmospheric Research (NCAR), USA and the Centre de
Recherches en Physique de L'Environnement Terrestre et Planetaire
(CRPE), France. ELDORA's first deployment was to TOGA COARE in
the Solomon Islands in January and February 1993.

ELDORA Characteristics:

Number of Radars 2 (fore and aft)
Wavelength 3.2 cm
Transmit Frequency 9.3 - 9.8 GHz
Beamwidth (circular) 1.8 °
Antenna Gain 38.7 dB
Polarization (00 elevation) horizontal
First Sidelobe Power -35 dB
Beam Tilt Angle (fore and aft) ± 15-19 °
Antenna Rotation Rate 5-144 °/s
Dwell Time 7-50 ms
Rotational Sampling Rate 0.75-2.00 °
Peak Transmitted Power 40-45 kw
Receiver Bandwidth 0.5 - 8.0 MHz
Receiver Temperature (at antenna) <600 °K
Pulse Repetition Frequency 2000-5000 Hz
Minimum Detectable Signal (at 10 km) -12 dBZ
Unambiguous Range 20 - 90 km
Unambiguous Velocity (single PRT) ± 13 - 20 m/s
Unambiguous Velocity (dual PRT) ± 80 - 100 m/s
Number of Frequencies 5
Pulse Chip Length 0.25 - 3.00 µs
Range Averaging 1-4 gates
Total Cell Length 37.5 - 1200 m
Along Track Beam Spacing 0.3 - 1.0 km

Additional information available at
http://linus.atd.ucar.edu/rsf/eldora/eldora.html

[Summary provided by NCAR Atmospheric Technology Division]