optical method to classify nederboerdgenom dete ktering of spread and bakaatspritt light fraan a ljusstraale

摘要

An optical method for detecting and classifying precipitation involves an arrangement contg. a radiation source and detection system. The radiation coincides with a detection region. The vertical extent of the light beam is less than the diagram of the largest particle to be detected or between 0.1 and 1 mm. The horizontal extent is greater than the vertical extent. Large rain drops can be distinguised from small ones since they cause shorter pulses. Snow can be distinguised from rain since snow drops cause oonger pulses than rain drops. USE - Optical detection and classification of precipitation.