RPE (Radio Parabolic Equation): A Parabolic Equation Radio Assessment Model.

摘要

The use of parabolic wave equation codes to model tropospheric radio propagation is rapidly gaining popularity. To properly implement these powerful techniques into radar performance assessment models, requires a detailed understanding of the inherent errors in the parabolic approximation. This paper examines three major sources of error in split-step parabolic equation solvers: (1) approximation of the elliptic wave operator by a parabolic operator, (2) truncation error in the formal parabolic solution, and (3) truncation error in the split-step operator. These errors are discussed in the context of operational codes. Reprints. (rh)