METHOD OF DETECTING ATMOSPHERIC WEATHER CONDITIONS IN THE ATMOSPHERE

摘要

Method and apparatus for detecting conditions in the atmosphere which are hazardous to flying aircraft and providing early warning to pilots or ground personnel. The method includes using a laser beam (34) and a coherent optica l receiver (87) to optically sense sound waves (20) produced by those hazardou s conditions and measuring the effect of those sound waves on the transmitted and received optical beams.