We propose an improved electromagnetic wave propagation model on the South China Sea. The improved model is based on the SPM propagation model of the open ground, according to the characteristics of electromagnetic wave propagation on the sea, the effects of reflection loss and rain attenuation are added to the propagation model. After that, we use continuous wave (CW) test data of the South China Sea to correct the model parameters .The simulation results show that the proposed improved model is consistent with the sea surface test data, which can accurately simulate the electromagnetic wave transmission loss on the South China Sea and contribute to the scientific research of sea surface electromagnetic wave propagation.
With the development of China's economy, the seaborne traffic volume along the Qiongzhou Strait-Beibu Gulf has been increasing. There is also a growing need to build ship networking to obtain data on ships, cargo, and navigational environments. However, China's unplanned spectrum resources are seriously insufficient. In this paper ,we set up a hardware and software measurement environment on this area to measure the occupancy of TV white spectrum. Then we perform time-space-frequency occupancy analysis of the measured data. The results show that there are a lot of continuous idle channels in the white spectrum of the Qiongzhou Strait-Beibu Gulf area, which can be used to construct maritime LTE ship network.