Acknowledgement
The authors acknowledge the financial support by Stable-Support Scientific Project of China Research Institute of Radio-wave Propagation (GrantNo.A132007W06), the National Science Foundation of China (Project No.42127807; 12105043), the Science Foundation of Sichuan (Project No. 23NSFSCC0116) and Sichuan Science and Technology Program (Project No. 2020YJ0334).
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