A PHYSICAL PATCH MODEL WITH TOPOGRAPHY EFFECTS FOR GNSS-R LAND APPLICATIONS AND DDM DIMULATIONS

被引：0
|
作者：
Xu, Haokui [1 ]
Tsang, Leung [1 ]
机构：
[1] Univ Michigan, Radiat Lab, Ann Arbor, MI 48109 USA
来源：
2020 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND NORTH AMERICAN RADIO SCIENCE MEETING | 2020年
关键词：
GNSS-R Patch model; topography elevations and slopes; DDM; SCATTERING;
D O I：
10.1109/IEEECONF35879.2020.9329590
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we study the wave scattering problem of land surfaces for Global Navigation Satellite System Reflectometry (GNSS-R) applications. Because the receivers are in the specular direction, both the coherent waves and the incoherent waves make contributions. The effects of Topography slopes and elevations, in addition to the microwave centimeter roughness, influence the coherent waves. Simulation results for Pr/Pt over the 20km by 20km area near the specular point is compared with other models and found to be smaller than coherent model and larger than incoherent model for small rms heights. The results are also found to be smaller than the physical patch model results with elevation effects only. The delay-doppler maps (DDMs) are simulated based on the patch model.
引用
收藏
页码：1151 / 1152
页数：2
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