Research on sea surface NB-IoT coverage based on improved SPM by Zheng HU, Baodan CHEN, Jia REN, Yupei FAN, Lian WANG

“…Based on the standard SPM,an improved sea surface propagation model was proposed.At the same time,a propagation model correction algorithm based on WLS algorithm was proposed.Using the CW test data of Qiongzhou Strait,the parameters of the improved SPM were corrected.Based on the corrected propagation model,the current base station of Qiongzhou Strait coast was used to carry out link level simulation and coverage simulation for NB-IoT.The experimental results show that the proposed method can effectively achieve the coverage of NB-IoT in Qiongzhou Strait and contribute to the scientific research of Internet of things.…”
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Simulating the ENSO impact on the distribution and fate of floating litter particles in the Northern South China Sea by Ke Pang, Ke Pang, Ke Pang, Yang Feng, Yang Feng, Yang Feng, Youchang Zheng, Youchang Zheng, Youchang Zheng, Chao Fang, Xiangrong Xu, Xiangrong Xu

“…The model reveals that most floating litter remains within Lingding Bay before being transported westward by the counterclockwise circulation over the NSCS and arriving at the Qiongzhou Strait. After crossing the Strait, the debris is carried by the counterclockwise circulation of the Beibu Gulf, and eventually arriving at the coasts of Vietnam and Laos. …”
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