The Acoustic Model Evaluation Committee (AMEC) Reports. Volume 3. Evaluation of the RAYMODE X Propagation Loss Model. Book 1
Abstract
The Acoustic Model Evaluation Committee has applied the methodology described in Volume 1 of this series of reports to evaluate the RAYMODE X propagation loss model. The accuracy of RAYMODE X has been assessed by quantitative comparisons with 8 sets of experimental data covering a broad spectrum of environmental acoustic scenarios. RAYMODE X typically has run times between 5 and 30 seconds on the UNIVAC 1108 computer. This model is poorly documented with the exception of a well written user's guide; this extends to a severe lack of comment cards within the computer code. The program could clearly benefit from an improved surface duct module; no other serious deficiencies in the physics of RAYMODE X has been noted. Various versions of RAYMODE exist in fleet operations. These versions do not contain identical physics, are written in different computer languages, and are run on hardware utilizing different word lengths. Consistency of results from these versions has not been demonstrated. It is recommended that a program configuration management be applied to all RAYMODE versions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1982
- Accession Number
- ADC034021
Entities
People
- Richard. B. Lauer
- Roy. Deavenport
Organizations
- United States Naval Research Laboratory