Vol. 104

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2022-06-30

Abnormal Circularly Polarized Propagation Over Terrain Profile with Gaussian Correlated Roughness

By Xueyuan Chen, Peng Xu, Xinguo Ma, Yucheng Yao, and Hui Lv
Progress In Electromagnetics Research Letters, Vol. 104, 169-177, 2022
doi:10.2528/PIERL22042806

Abstract

In application to active microwave remote sensing, the counterwise RL (left-hand circularly polarized transmitting and right-hand circularly polarized receiving) and LR polarized bistatic scattering are generally stronger than the likewise LL and RR ones, respectively. In this paper, we investigate the circularly polarized propagation over terrain profile at 1.575 GHz and 900 MHz in application to wireless communication. Completely different from common sense in remote sensing, however, numerical simulations show that field strengths for likewise polarizations are larger than those for counterwise polarizations. For further verification, circularly polarized bistatic scattering from terrain is also provided, which is consistent with previous conclusion that the counterwise LR polarized one is larger. Physical mechanism of such a contradictory behavior is explicated by local Fresnel reflections, and physical insights are offered for terrain propagation of circular polarizations. It is suggested that the likewise configuration be adopted in wireless communication, although the counterwise is adopted in microwave remote sensing.

Citation


Xueyuan Chen, Peng Xu, Xinguo Ma, Yucheng Yao, and Hui Lv, "Abnormal Circularly Polarized Propagation Over Terrain Profile with Gaussian Correlated Roughness," Progress In Electromagnetics Research Letters, Vol. 104, 169-177, 2022.
doi:10.2528/PIERL22042806
http://www.jpier.org/PIERL/pier.php?paper=22042806

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