Coastal Land-Air-Sea Interactions (CLASI) EM Measurements
Abstract
ABSTRACTThe Ohio State University-ElectroScience Laboratory (OSU-ESL) is pleased to submit the proposal titled ~Coastal Land-Air-Sea Interaction (CLASI) and Ducting Research with Electromagnetic Measurements,~ in response to ONR Announcement #N00014-19-S-B001. E"SL is a major independent """"Center-of-Excellence"""" within the OSU and is one of the largest university Radio Frequency (RF) research" laboratories in the world. Our researchers and students are involved in all aspects of electromagnetic and RF technologies. The Coastal Land-Air-Sea Interaction (CLASI) program is an Office of Naval Research (ONR) Departmental Research Initiative (DRI) aimed at developing and/or modifying parameterizations for the wind, as well as momentum and heat flux variability, within the coastal margin~defined as ~ 6-km from the shoreline. CLASI also aims to improve the prediction of the coastal evaporation duct conditions for better quantifying electromagnetic wave (EM) propagation. The OSU project intends to address CLASI core objectives through extensive measurements and analyses coordinated with the CLASI team. Our efforts include deployment of EM beacons on the new qTASIS buoys, and Controlled Towed Vehicle (CTV) on aircraft, in addition to radar, coherent array and drone measurements concurrent with Naval Postgraduate School~s (NPS) lower atmospheric profiling, small boat-based tethered balloon and flux sampling, and distributed shore-based tower observations. EM propagation link measurements between shore-side receiving antennas and transmitters on qT-ASIS buoys and the research aircraft will enable us to study in detail the effects of coastal land-air-sea interactions on EM propagation and develop remote sensing methods to characterize them. We intend to address specific issues within CLASI, including the ~coast-aware~ parametrizations of air-sea fluxes, evaluation of mesoscale model using our multi-platform and spatially distributed measurements, and improving the prediction of evaporation ducts using mesoscale output to include the effects of waves and stable coastal atmospheric conditions. Extensive data quality control and analyses will follow each proposed field campaign and a close collaboration with all CLASI participants is planned.The ultimate objective of this research it better understanding coastal land-air-sea interactions and improving the numerical weather prediction model Coupled Ocean Atmosphere Mesoscale System (COAMPS) thru EM measurements, in addition to advancing the field of detection, discrimination, tracking, and fusion of data of difficult targets in rapidly varying non-standard atmospheric conditions utilizing electromagnetic theory and situational awareness methodologies, and to improve communication link design and performance analysis under ducting conditions. Some of the work proposed and questions we want to answer are:1. Remote sensing of bulk coastal parameters using propagation loss measurement system using beacons, refractivity-from-clutter capable marine radars, and vertical EM field measured by drones.2. Joint estimation with COAMPS, data fusion of EM measurements into NWP forecast.3. Better understanding of sea surface for very low grazing angle propagation.Approved for Public Release
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 11, 2020
- Source ID
- N000142012100
Entities
People
- Caglar Yardim
Organizations
- Office of Naval Research
- Ohio State University
- United States Navy