Abstract
Since 1981, many UK firing ranges have used computer-based prediction models to control noise levels in the surrounding countryside. These models take into account local surface conditions and meteorology to provide peak noise level contour maps over distances of up to 30 km. A feature of these models is that peak noise level maps can be produced within a few minutes of the input of meteorological data obtained directly from radiosonde ascents or from mesoscale models. Several new prediction models have been developed at Salford over the years, taking advantage of the ever increasing power of personal computers to improve accuracy and user input and output facilities. This paper will discuss the model developments, including the meteorological preprocessor, illustrate some of the techniques adopted to improve accuracy and speed, and outline future improvements.
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