Ultraviolet scattering propagation modeling: analysis of path loss versus range

Area of Science:

• Atmospheric optics
• Optical communications

Background:

• Deep-ultraviolet (UV) radiation propagation modeling is crucial for non-line-of-sight (NLOS) UV communication systems.
• Prior research indicated a linear relationship between path loss and range for singly scattered radiation at short distances.

Purpose of the Study:

• To formalize and generalize the path loss model for UV radiation in NLOS communications.
• To derive an approximate relationship for path loss considering nth-order scattering and general system characteristics.
• To investigate the validity and implications of the derived approximation for UV system development.

Main Methods:

• Mathematical derivation of path loss approximation for nth-order scattered radiation.
• Analysis of the region of validity for the derived approximation.
• Numerical simulations to illustrate the practical implications of the findings.

Main Results:

• A generalized approximate relationship between path loss (PL) and range (r) for nth-order scattered radiation: PL ∝ r^(2-n).
• Identification of the conditions under which this approximation holds true.
• Demonstration of how the derived insights can guide the design and analysis of UV communication systems.

Conclusions:

• The derived path loss model provides a valuable tool for understanding and optimizing UV communication systems.
• The generalized formula accounts for higher orders of scattering, offering broader applicability than previous models.
• The findings facilitate the development of more efficient and robust UV-based communication technologies.