Papers by Gianni Pablos-Vega
2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
The Student Led Test Bed (STB) is part of the NSF Engineering Research Center CASA and is current... more The Student Led Test Bed (STB) is part of the NSF Engineering Research Center CASA and is currently focused in developing low-cost and low infrastructure radar networks to fill lower atmosphere gaps not covered by current technology. The first radar node, which is part of ...
2011 IEEE RadarCon (RADAR), 2011
CASA NSF Engineering Research Center, and is currently focused on developing Off-the-Grid (OTG) X... more CASA NSF Engineering Research Center, and is currently focused on developing Off-the-Grid (OTG) X-band low infrastructure and low cost radar networks in the west coast of Puerto Rico. These radars will fill lower atmosphere gaps (< 2 km) not covered by current ...
IEEE Transactions on Geoscience and Remote Sensing, 2000
Operational weather radars in the U.S. and other countries in the world are challenged in providi... more Operational weather radars in the U.S. and other countries in the world are challenged in providing low-altitude observations of rainfall due to the Earth's curvature and their deployment in "sparse" networks spaced hundreds of km apart. Given this limitation, work is underway to explore the feasibility of "dense" networks of small X-band radars. One approach developed by a student team from the U.S. Engineering Research Center for Collaborative and Adaptive Sensing of the Atmosphere (CASA) uses low-cost networks of simple, single-polarization radars that are not dependent on existing infrastructure, operating using solar energy and ad-hoc wireless networks, providing gap-filling data with improved temporal and spatial resolution. This "off-the-grid" (OTG) concept is one that might offer a means to monitor rainfall and provide useful data where it is not feasible or cost-effective to deploy more costly and more accurate radars. This paper describes the OTG concept and design, and presents examples of collected data and respective comparisons from this OTG network with measurements from an S-band NEXRAD radar as well as rainfall data from a set of rain gauges located in Puerto Rico. Results show that CASA OTG radars can provide improved spatial and temporal rainfall estimates with consistent or improved estimated errors when compared to the S-band radar. End user validation was demonstrated in collaboration with the U.S. National Weather Service during system deployment for the XXI Central American and Caribbean Games celebrated at Mayaguez, Puerto Rico during the Summer of 2010.
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Papers by Gianni Pablos-Vega