Numerical simulation of long-path spherical wave propagation in three-dimensional random media

Juan Antonio Rubio; Aniceto Mounta Belmonte; Adolfo Comeron

doi:10.1117/12.332408

7 December 1998 Numerical simulation of long-path spherical wave propagation in three-dimensional random media

Juan Antonio Rubio, Aniceto Mounta Belmonte, Adolfo Comeron

Proceedings Volume 3494, Atmospheric Propagation, Adaptive Systems, and Lidar Techniques for Remote Sensing II; (1998) https://doi.org/10.1117/12.332408
Event: Remote Sensing, 1998, Barcelona, Spain

Abstract

This communication presents a new method to overcome some limitations in the simulation of the propagation of waves originating from a point source through a very long path in a turbulent medium. Existing propagation simulation algorithms suffer from either windowing or lack of resolution when applied to long paths. If Cartesian coordinates are used, the limited size of the numerical mesh originates undesired windowing errors in the long run. Casting the classical split-step Fourier algorithm in a spherically diverging coordinate system can solve this problem. In this way an angular mesh that adapts the source and the propagation algorithm to the geometry of the problem is used. But in long path propagation, this spherical divergent mesh causes a loss of resolution that can become a serious problem in the evaluation of the field statistical moments.

Citation Download Citation

Juan Antonio Rubio, Aniceto Mounta Belmonte, and Adolfo Comeron "Numerical simulation of long-path spherical wave propagation in three-dimensional random media", Proc. SPIE 3494, Atmospheric Propagation, Adaptive Systems, and Lidar Techniques for Remote Sensing II, (7 December 1998); https://doi.org/10.1117/12.332408

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KEYWORDS

Wave propagation

Atmospheric propagation

Turbulence

Spherical lenses

Computer simulations

Radio propagation

Spatial resolution

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