Accession Number : ADA291445

Title :   Scanning Fast Field Program (SCAFFIP) EOSAEL. Version 1.0 (Users Manual),

Corporate Author : ARMY RESEARCH LAB WHITE SANDS MISSILE RANGE NM

Personal Author(s) : Noble, John M. ; Marlin, Dave

PDF Url : ADA291445

Report Date : JAN 1995

Pagination or Media Count : 115

Abstract : The Scanning Fast Field Program (SCAFFIP) is an atmospheric acoustic propagation model incorporating many of the effects on the environment on the sound field such as geometrical spreading, refraction, diffraction, molecular absorption, and complex ground impedance. SCAFFIP provides range estimations from the sensor or target for signal-noise of -10, -5, 0, 5, and 10 dB (re: 20 gPa) with azimuth for a given geometry, sound level of target at a given frequency, and meteorological profile. The meteorological profile and the geometry provides the model the ability to calculate the sound speed profile. The geometry profile is required because the angular dependence of the sound speed on the wind direction is relative to the direction of propagation. This model works over a flat-earth and a non-turbulent atmosphere. Even with these restrictions, the model performs very well for many scenarios. The model contains a friendly user interface requiring a minimum amount of information to run the model. There are also flags that can be set to obtain more detailed information. (AN)

Descriptors :   *COMPUTER PROGRAM DOCUMENTATION, *ACOUSTIC FIELDS, SCANNING, DATA BASES, MATHEMATICAL MODELS, SOFTWARE ENGINEERING, USER MANUALS, ACOUSTIC WAVES, SIGNAL TO NOISE RATIO, INPUT OUTPUT PROCESSING, METEOROLOGICAL DATA, PROFILES, WAVE PROPAGATION, SOUND TRANSMISSION, WIND DIRECTION, ACOUSTIC ABSORPTION, COMPUTER FILES, ACOUSTIC VELOCITY, MOLECULAR PROPERTIES, ATMOSPHERE MODELS, ATMOSPHERIC REFRACTION, ACOUSTIC IMPEDANCE, SOUND RANGING.

Subject Categories : Computer Programming and Software
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE