Search

Your search keyword '"Fulton, Caleb"' showing total 23 results
Start Over Author "Fulton, Caleb" Search Limiters Full Text
23 results on '"Fulton, Caleb"'

1. Towards the Next Generation Operational Meteorological Radar

Author

Weber, Mark, Hondl, Kurt, Yussouf, Nusrat, Jung, Youngsun, Stratman, Derek, Putnam, Bryan, Wang, Xuguang, Schuur, Terry, Kuster, Charles, Wen, Yixin, Sun, Juanzhen, Keeler, Jeff, Ying, Zhuming, Cho, John, Kurdzo, James, Torres, Sebastian, Curtis, Chris, Schvartzman, David, Boettcher, Jami, Nai, Feng, Thomas, Henry, Zrnić, Dusan, Ivić, Igor, Mirković, Djordje, Fulton, Caleb, Salazar, Jorge, Zhang, Guifu, Palmer, Robert, Yeary, Mark, Cooley, Kevin, Istok, Michael, and Vincent, Mark

Published
2021

2. Current Status and Future Challenges of Weather Radar Polarimetry: Bridging the Gap between Radar Meteorology/Hydrology/Engineering and Numerical Weather Prediction

Author

Zhang, Guifu, Mahale, Vivek N., Putnam, Bryan J., Qi, Youcun, Cao, Qing, Byrd, Andrew D., Bukovcic, Petar, Zrnic, Dusan S., Gao, Jidong, Xue, Ming, Jung, Youngsun, Reeves, Heather D., Heinselman, Pamela L., Ryzhkov, Alexander, Palmer, Robert D., Zhang, Pengfei, Weber, Mark, Mcfarquhar, Greg M., Moore, III, Berrien, Zhang, Yan, Zhang, Jian, Vivekanandan, J., Al-Rashid, Yasser, Ice, Richard L., Berkowitz, Daniel S., Tong, Chong-chi, Fulton, Caleb, and Doviak, Richard J.

Published
2019
Full Text
View/download PDF

3. Far-Field Antenna Pattern Measurements Using a UAS-Based Dynamic Gimbal Scan System

Author

Segales, Antonio R., Schvartzman, David, Burdi, Khuda, Salazar-Cerreno, Jorge L., Fulton, Caleb, and Palmer, Robert D.

Abstract

The growing complexity of weather radar systems necessitates precise in situ antenna-pattern measurements, particularly for emerging phased array weather radars. Our study introduces an innovative method using the radio-frequency sonde (RFSonde), a custom-modified uncrewed aerial system (UAS). It conducts in-flight power measurements in the far-field (FF) region of operational radar antennas, employing a unique three-axis gimbal control strategy to maintain continuous polarization alignment with the antenna under test (AUT). This strategy, consistent with the Ludwig-3 definition of cross-polarization, avoids distortions due to probe misalignment and effectively utilizes the full dynamic range of the onboard power sensor. In multiple field experiments, the RFSonde demonstrated the viability and repeatability of this method, capturing copolar and cross-polar radiation patterns of an X-band weather radar. The maximum absolute differences in azimuth and elevation beamwidth estimates were 0.011 ° and 0.006 °, respectively, highlighting the system’s precision. The nearly negligible error contributions, amounting to just 0.014% of the power measured, further showcase the system’s accuracy. Additionally, we verified that our dynamic gimbal scan (DGS) algorithm accurately measures the AUT without needing posterior probe correction (PC). This groundbreaking work contributes to the emerging field of aerial RF measurement technology and has potential applications for the polarimetric calibration of phased array radars (PARs).

Published
2024
Full Text
View/download PDF

4. A Primer on Phased Array Radar Technology for the Atmospheric Sciences

Author

Palmer, Robert, primary, Bodine, David, additional, Kollias, Pavlos, additional, Schvartzman, David, additional, Zrnić, Dusan, additional, Kirstetter, Pierre, additional, Zhang, Guifu, additional, Yu, Tian-You, additional, Kumjian, Matthew, additional, Cheong, Boonleng, additional, Collis, Scott, additional, Frasier, Stephen, additional, Fulton, Caleb, additional, Hondl, Kurt, additional, Kurdzo, James, additional, Ushio, Tomoo, additional, Rowe, Angela, additional, Salazar-Cerrenˉo, Jorge, additional, Torres, Sebastián, additional, Weber, Mark, additional, and Yeary, Mark, additional

Published
2022
Full Text
View/download PDF

18. Cylindrical polarimetric phased array radar: Beamforming and calibration for weather applications

Author

Fulton, Caleb, primary, Salazar, Jorge L., additional, Zhang, Yan, additional, Zhang, Guifu, additional, Kelly, Redmond, additional, Meier, John, additional, McCord, Matt, additional, Schmidt, Damon, additional, Byrd, Andrew D., additional, Bhowmik, Lal Mohan, additional, Karimkashi, Shaya, additional, Zrnic, Dusan S., additional, Doviak, Richard J., additional, Zahrai, Allen, additional, Yeary, Mark, additional, and Palmer, Robert D., additional

Published
2017
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results