Comparison of measured and predicted pure tone propagation levels from JAPE-1: An evaluation of the performance of ASOPRAT

Short‐range propagation data (<2 km) from the Joint Acoustic Propagation Experiment Phase One (JAPE‐1) has been used to evaluate the performance of the advanced sound propagation in the atmosphere (ASOPRAT) computer code. Speakers mounted 2 and 30 m above the ground were used as pure tone sources for the short‐range measurements. Pressure levels measured in the time domain have been Fourier analyzed to produce plots of the pressure due to a particular frequency over time. Meteorological profiles measured at the experiment site were used as input for the prediction routine ASOPRAT. Agreement between the predicted and measured propagation losses is very good. Source strength data were not available as of the writing of this abstract, so at this time comparisons are all relative to a reference microphone at the ground. Source strength data may be available by the time of the meeting.