Limiting ranges in atmospheric radioacoustic sounding

The effect of atmospheric turbulence on the operation of systems for radioacoustic sounding for large distances and the absence of wind are considered. It is shown that turbulence acts to limit the radius of operation of these systems. A formula is derived which gives the maximum range of operation as a function of the system's parameters. Satisfactory agreement with experimental data is obtained. It is noted that even by incorporating systems that compensate for wind drift, the maximum range cannot be significantly increased.