Results 191 to 200 of about 1,178,019 (215)

Retrieve the evaporation duct height by least-squares support vector machine algorithm

Journal of Applied Remote Sensing, 2009
The detection and tracking of naval targets, including low Radar Cross Section (RCS) objects like inflatable boats or sea skimming missiles requires a thorough knowledge of the propagation properties of the maritime boundary layer. Models are in existence, which allow a prediction of the propagation factor using the parabolic equation algorithm.
Bourlier, Christophe, Essen, H., Fuchs, H.-H., Saillard, Joseph, Douvenot, Rémi, Fabbro, Vincent, Foerster, Joerg   +6 more
openaire   +3 more sources

PCR Model: Optimization of Evaporation Duct Height Prediction Based on Principal Component Regression

2020 IEEE 5th International Conference on Signal and Image Processing (ICSIP), 2020
Evaporation duct is an abnormal refraction atmospheric structure frequently appearing on the sea surface. Accurately obtaining the evaporation duct height (EDH) has significant effects on the effective application of electromagnetic system equipment. Aiming at the problems of large error and strong data dependence of current evaporation duct prediction
Wenpeng Zhao, Jun Zhao, Jincai Li, Tao Jiang, Dandan Zhao, Jingze Lu, Tengling Luo   +6 more
openaire   +1 more source

A preliminary study on the application of remotely sensed SST in locating evaporation duct height

SPIE Proceedings, 2012
Refractivity happens due to stratification in the lower boundary layer over oceans due to variability of moisture, temperature, wind and sea surface temperature which collectively may lead to generate evaporation duct. The evaporation duct has a significant impact on the spread of electromagnetic waves in the atmosphere over oceans both from the ...
Muhammad Hasan Ali Baig, Zhenhui Wang, Lifu Zhang, Lu Yang   +3 more
openaire   +1 more source

Evaporation duct height measurements in the Mid-Atlantic: Final Report

2013
This is a report on atmospheric boundary layer measurements made aboard the USNS Kane in February and March of 1978. The data has been analyzed to obtain Monin-Obukhov similarity parameters and EM propagation properties using bulk, profile and turbulence data.
Fairall, C.W., Davidson, Kenneth L., Schacher, G. E. (Gordon Everett), Houlihan, Thomas M.   +3 more
openaire   +1 more source

PDD_GBR: Research on Evaporation Duct Height Prediction Based on Gradient Boosting Regression Algorithm

Radio Science, 2019
AbstractEvaporation duct is a special atmospheric stratification that always exists at sea, which has an important influence on electromagnetic wave propagation. Accurate prediction of evaporation duct height is of great significance for radio information system. In the era of big data, machine learning has been widely used in various research work and
Wenpeng Zhao, Jincai Li, Jun Zhao, Dandan Zhao, Xiaoyu Zhu   +4 more
openaire   +1 more source

Estimating Evaporation Duct Height by Kite Flying Rawinsonde

2019
OC3570 ...
openaire   +1 more source

Comparison of Evaporation Duct Height Statistics Based on Surface Bulk Measurements Over Yongxing Island

IEEE Antennas and Wireless Propagation Letters, 2023
Xiaofeng Zhao, Pinglv Yang, Zhou Zeming
exaly  

The Comparison of Long Short-Term Memory Neural Network and Deep Forest for the Evaporation Duct Height Prediction

IEEE Transactions on Antennas and Propagation, 2023
Yanbo Mai, Qixiang Liao, Qingjian Ni
exaly  

Evolutionary-Enhanced Voting Models for Evaporation Duct Height Prediction

GLOBECOM 2025 - 2025 IEEE Global Communications Conference
Hanzhong Zhang, Ting Zhou, Tianheng Xu, Honglin Hu   +3 more
openaire   +1 more source

X-Band Beacon-Receiver Array Evaporation Duct Height Estimation

2017
N00014-16-1 ...
openaire   +1 more source