Subjects: Astronomy >> Astrophysical processes Subjects: Geosciences >> Geodestics submitted time 2024-02-05
Abstract： —LR polarization is commonly used for the
corresponding geophysical parameters retrieval in GNSS#2;
R(Global Navigation Satellite System-Reflectometry) or SoOP-R
(Signal of Opportunity-Reflectometry) . However, the other
polarization of the reflected signals has attracted more and more
attention with the development . The popular used equation for
RR polarization demonstrates that it decreases as the soil
moisture content increase and this is in contradiction with the
experiment data. Here, three new models have been developed:
Spec4PolR (Specular reflectivity model for polarization GNSS#2;
R), SPM4Pol (small perturbation model for polarization GNSS#2;
R), and Umich4Pol (Umich model for polarization GNSS-R).
The Mueller matrix of these three models has been presented
and the wave synthesis technique is employed to calculate the
reflectivity at RR polarization. Spec4polR employs only three
elements in the Mueller matrix for the final reflectivity, while
five elements for Umich4polR participate in the calculation and
although all the elements of the SPM4Pol have constructed the
Mueller matrix and only nine elements have been employed for
calculation. Each elements' effects on the soil moisture content
are presented and the final reflectivity at RR polarization has
been illustrated. However, due to the simple formulations of
Spec4Pol, its reflectivity at RR polarization still decreases as the
soil moisture content increase. while the results of SPM4Pol and
Umich4Pol are consistent with the measured data and the
reflectivity at RR polarization increase as the soil moisture
content increase. The accurate forward calculation of RR
polarization is crucial for the subsequent retrieval algorithm of
polarization GNSS-R/SoOP-R.
Subjects: Management Science >> Other Disciplines of Management Science submitted time 2022-11-21 Cooperative journals: 《2022年第三届传播、创新和经济管理国际研讨会》
Abstract： This study analyzes the reasons for users' ambiguous perceptions of the Metaverse from the perspective of the cognitive base model, based on the public's understanding of the concept of Metaverse, and the intrapersonal communication direction from the audience's perspective. This study analyses the relationship between audience satisfaction and the cognitive schema of Metaverse, and initially explores the relationship between the audience's own cognitive level and the cognition of Metaverse, as well as the influence of audience access channels on the degree of metaverse cognition. We found that when the Metaverse can satisfy certain needs of the audience, it can make the audience further understand the new concept of Metaverse; At the same time, the future development direction of the Metaverse should be closer to the needs of the audience's life.
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