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Differential Absorption Radar at 170 GHz for Atmospheric Boundary Layer Water Vapor Profiling

Show simple item record Roy, Richard J. Cooper, Ken B. Lebsock, Matthew Millán, Luis Siles, Jose Rodriguez Monje, Raquel 2020-04-22T22:38:09Z 2020-04-22T22:38:09Z 2018-09-26
dc.identifier.citation 15th European Radar Conference (EuRAD 2018), Madrid, Spain, September 26-28, 2018 en_US
dc.identifier.clearanceno 18-0689
dc.description.abstract We are developing a frequency-modulated continuous-wave (FMCW) radar between 167 and 174.8 GHz to measure differential absorption due to water vapor within the atmospheric boundary layer. In this work, we report on single-frequency measurements performed within this band in the presence of precipitating clouds. Despite the relatively low transmit power of 6-10 dBm, the high transmit/receive isolation and low noise figure of the system enables detection of radar echos from rain or clouds with high signal-to-noise ratio (SNR) out to about one kilometer. Near future upgrades to the system that will lengthen significantly the detectable range include a 15 to 20 dB increase in output power and 20 dB increase in antenna gain. This work builds on technology developed and measurements performed in our group in the 183.5 to 193 GHz band, which is subject to transmission restrictions due to passive remote sensing platforms that rely on those frequencies. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2018 en_US
dc.subject millimeter wave radar en_US
dc.subject meterological radar en_US
dc.subject radar signal processing en_US
dc.title Differential Absorption Radar at 170 GHz for Atmospheric Boundary Layer Water Vapor Profiling en_US
dc.type Preprint en_US

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