Throughout the early and late 1990s, several mobile radar concepts came to be, often involving high frequency X-band radars which suffer significant attenuation, and often lack in range. Ideally, these radars would serve as research and observation platforms, covering regions scarcely covered by the NEXRAD network as a whole.[2] One such concept later went on to become the Doppler On Wheels, now a fleet of 3 operational vehicles.[3]
In order to counteract the problems previously described with high frequency radars, two decommissioned WSR-74 radars, originally used for local warnings, were acquired by TAMU. These two radars, both operating in the C-band, are less susceptible to attenuation in precipitation and have overall greater ranges for doppler products. Throughout the rest of the 90s and into 2000, development of the first SMART-R, SR-1, began. During development, a fire in the garage housing SR-1 broke out, destroying the truck and several components. Much of the radar survived, however, and the project continued with the completion of SR-1 in late 2001. Following this, SR-2 was assembled and eventually completed in 2004.[1]
Characteristicsedit
All listed characteristics will apply to both SRs. The operating maximum power for SR is 250 kW. The highest operating frequency for SR is 5,635 MHz - falling into the C-band. With a 2.5 m center-fed parabolic antenna, the gain is approximately 40 dB. Moreover, half power beamwidth is approximately 1.5°.[1]
Deploymentsedit
Since the inception of the project, both SMART-Rs have performed field research in various regions of the United States, including hurricane research, and haboob intensification studies.[4] Both SMART-Rs have sampled tornadic supercells across the plains, taking part in projects such as VORTEX-2 and VORTEX-SE. Given the SR platform consists of two individual radars, projects are often arranged in what is known as a dual-doppler setup, whereas two radars are located at different locations in varying orientations so as to maximize wind retrieval accuracy.[5]
^Mersereau, Dennis (22 July 2015). "U.S. radars have come a long way, but gaps in coverage remain a big risk". Washingtonpost.com.
^"Center for Severe Weather Research: The DOW Network". Cswr.org.
^"OU SMART-R team deploys to Hurricane Irma". Meteorology.ou.edu. 8 September 2017.
^"VORTEX-SE - Downdraft Kinematics". Cswr.org. March 27, 2017. Retrieved May 18, 2018.
April 13, 2024
smart, shared, mobile, atmospheric, research, teaching, radar, colloquially, known, mobile, doppler, weather, radar, platform, operated, created, university, oklahoma, with, aide, from, texas, texas, tech, university, 2001, sampling, haboob, arizona, country, . The Shared Mobile Atmospheric Research and Teaching Radar colloquially known as SMART R or SR is a mobile Doppler weather radar platform operated and created by University of Oklahoma OU with aide from Texas A amp M and Texas Tech University in 2001 SMART R 1 SR 1 sampling a haboob in Arizona Country of originUSANo built2TypeWeather radarFrequency5635 MHz SR 1 5612 82 MHz SR 2 C Band Beamwidth1 5 Pulsewidth0 2 to 2 0 msRPM0 33 deg s 1Diameter2 5 mElevation0 90 Other NamesSR Contents 1 Development 2 Characteristics 3 Deployments 4 ReferencesDevelopment editThroughout the early and late 1990s several mobile radar concepts came to be often involving high frequency X band radars which suffer significant attenuation and often lack in range Ideally these radars would serve as research and observation platforms covering regions scarcely covered by the NEXRAD network as a whole 2 One such concept later went on to become the Doppler On Wheels now a fleet of 3 operational vehicles 3 In order to counteract the problems previously described with high frequency radars two decommissioned WSR 74 radars originally used for local warnings were acquired by TAMU These two radars both operating in the C band are less susceptible to attenuation in precipitation and have overall greater ranges for doppler products Throughout the rest of the 90s and into 2000 development of the first SMART R SR 1 began During development a fire in the garage housing SR 1 broke out destroying the truck and several components Much of the radar survived however and the project continued with the completion of SR 1 in late 2001 Following this SR 2 was assembled and eventually completed in 2004 1 Characteristics editAll listed characteristics will apply to both SRs The operating maximum power for SR is 250 kW The highest operating frequency for SR is 5 635 MHz falling into the C band With a 2 5 m center fed parabolic antenna the gain is approximately 40 dB Moreover half power beamwidth is approximately 1 5 1 Deployments editSince the inception of the project both SMART Rs have performed field research in various regions of the United States including hurricane research and haboob intensification studies 4 Both SMART Rs have sampled tornadic supercells across the plains taking part in projects such as VORTEX 2 and VORTEX SE Given the SR platform consists of two individual radars projects are often arranged in what is known as a dual doppler setup whereas two radars are located at different locations in varying orientations so as to maximize wind retrieval accuracy 5 References edit a b c Michael I Biggerstaff et al September 2005 The Shared Mobile Atmospheric Research And Teaching Radar A Collaboration to Enhance Research and Teaching Bulletin of the American Meteorological Society 86 9 American Meteorological Society 1263 1274 Bibcode 2005BAMS 86 1263B doi 10 1175 BAMS 86 9 1263 eISSN 1520 0477 ISSN 0003 0007 Mersereau Dennis 22 July 2015 U S radars have come a long way but gaps in coverage remain a big risk Washingtonpost com Center for Severe Weather Research The DOW Network Cswr org OU SMART R team deploys to Hurricane Irma Meteorology ou edu 8 September 2017 VORTEX SE Downdraft Kinematics Cswr org March 27 2017 Retrieved May 18 2018 Retrieved from https en wikipedia org w index php title SMART R amp oldid 1130316944, wikipedia, wiki, book, books, library,
