Study On Non-line-of-sight Solar Blind Ultraviolet Communication Links Path Loss

With the development of Ultraviolet(UV) devices and UV technology, non-line-of-sight(NLOS) UV communication technology is becoming a hot research field at home and abroad. UV communication is based on the characteristic of UV atmospheric transmission, so the characteristic of UV atmospheric transmission must be studied clearly at first. Based on atmospheric transmission theory, the path loss of UV communication is studied.The main works are as follows:Based on the coplanar single-scatter model, the effect of the communication mode, geometric parameters of transceiver system, atmospheric visibility and different weather conditions on the path loss of UV communication is studied. The numerical integration model and approximation model are compared.The non-coplanar model is studied based on the spherical coordinates, ellipsoidal coordinates, the two models can be turned into the coplanar model when the transceiver off-axis angles are zero. Two models are compared, and they are verified each other, and they match up very well. A special angle of the single-scatter non-coplanar approximation model is studied. At last, the effect of the geometric parameters of transceiver system on the path loss of the non-coplanar UV communication links is studied.