@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/6c5ca722-0bc7-4ccd-ad24-39b9d8710140>
  skos:prefLabel "Radar Sounders"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/51b9980d-4225-47bd-92d9-3268f023791f> .

<https://gcmd.earthdata.nasa.gov/kms/concept/51b9980d-4225-47bd-92d9-3268f023791f>
  ns0:altLabel [ ] ;
  skos:definition """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]"""@en ;
  skos:prefLabel "ELDORA"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/6c5ca722-0bc7-4ccd-ad24-39b9d8710140> ;
  a skos:Concept .