Accession Number:

ADA316575

Title:

BiRASP - The Bistatic Range-Dependent Active System Performance Prediction Model.

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC ACOUSTICS SYSTEMS BRANCH

Report Date:

1996-09-30

Pagination or Media Count:

99.0

Abstract:

In 1992, the Naval Research Laboratory NRL published a report describing the Range-dependent Active System Performance RASP prediction model a sequence of computer programs using multipath propagation and scattering processes to predict the long-range, low-frequency boundary reverberation, and target returns that would be received in real ocean environments. That computer model has been extended to admit arbitrary sourcereceiver configurations within a three-dimensional, range-dependent environment. The enhancements include 1 range and azimuthal dependence in all environmental parameters, 2 volume scattering and bistatic scattering strength functions, 3 realistic source and receiver characteristics e.g., three-dimensional beam patterns for linear arrays and array tilt, and 4 calculation of target returns with timeangle spreading. In addition to addressing the prediction and evaluation of active sonar systems in real ocean environments, the set of programs that comprise the Bistatic Range-dependent Active System Performance BiRASP prediction model also produce the detailed, high-resolution results required for basic theoretic and experimental acoustic research. This report presents the theoretical foundations of the BiRASP model and the corresponding numerical implementation of this theory. Further, a detailed description of the model software, instructions for execution, and sample results are provided.

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE