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2013-04-18

Retrieving Evaporation Duct Heights from Power of Ground-Based GPS Occultation Signal

By Hong-Guang Wang, Zhen-Sen Wu, Leke Lin, Shi-Feng Kang, and Zhenwei Zhao
Progress In Electromagnetics Research M, Vol. 30, 183-194, 2013
doi:10.2528/PIERM13022602

Abstract

Evaporation duct is a manifest phenomenon that can affect microwave propagation seriously with low elevation angles near the sea surface. As an important parameter to describe the characteristic of the evaporation duct, duct height can be estimated from radar sea echo using a technique called as "refractivity from clutter". In this study, we proposed a novel approach to estimating the evaporation duct height. The signal power received by a ground-based GPS receiver is used when the GPS satellites rise or set at the local horizon over the sea. A forward propagation model and genetic algorithm are adopted to implement this method. The performance is evaluated via numerical simulation for inferring evaporation duct with different height. The results showed that the proposed method is well effective, especially for the conditions with higher evaporation duct height.

Citation


Hong-Guang Wang, Zhen-Sen Wu, Leke Lin, Shi-Feng Kang, and Zhenwei Zhao, "Retrieving Evaporation Duct Heights from Power of Ground-Based GPS Occultation Signal," Progress In Electromagnetics Research M, Vol. 30, 183-194, 2013.
doi:10.2528/PIERM13022602
http://jpier.org/PIERM/pier.php?paper=13022602

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