CAS is at the forefront of noise modelling for live fire artillery ranges. Our Gunfire Noise Analysis
Tool (GNAT) has proven to be a significant asset in both the planning, and the noise management,
phases of artillery ranges.
GNAT models the sound levels of both gun and shell noise and predicts how this noise will spread
and attenuate taking account of the weapon type, the terrain and the prevailing weather conditions.
Results are then displayed as easily readable noise contours over a map of the area and as a table
of noise levels for key sensitive areas.
The GNAT model takes into account a number of factors which contribute to, and influence, noise
propagation and attenuation including:
- Geometric spreading
- Directivity
- Barrier Attenuation
- Air Absorption
- Wind and Temperature
- Ground Attenuation
- Metrological conditions
- Terrain
The system software runs on a standard desktop PC and offers simple dialogue boxes to allow evaluation from current or expected meteorological conditions. Results may be displayed as calculated noise level contours over a map or as tables.
Read the Ministry of Defence case study