Accession Number:

ADA237437

Title:

Use of the Implicit-Finite-Difference Method to Implement the Parabolic Equation Model

Descriptive Note:

Final rept. Oct 89-Oct 90,

Corporate Author:

NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA

Personal Author(s):

Report Date:

1991-02-01

Pagination or Media Count:

15.0

Abstract:

An effort to investigate alternate means to the split step algorithm for determining radar coverage in the troposphere at gigahertz GHz frequencies is presented. The theory of the implicit-finite-difference method is summarized and the boundary conditions described. Examples indicate that, for sufficiently high signal levels, the IFD method is adequate at 9.6 GHz. However, the method did not give correct results beyond 35 km for the standard-atmosphere case in which signal level are very low.

Subject Categories:

  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE