公开(公告)号：US20190383735A1

公开(公告)日：2019-12-19

申请号：US16008833

申请日：2018-06-14

Applicant: Rosemount Aerospace Inc.

Inventor： Mark Ray ,  Kaare Josef Anderson

IPC: G01N21/47 ,  G01W1/00

Abstract: Apparatus and associated methods relate to reliably determining both size of large water droplets and density of small water droplets in a multi-modal cloud atmosphere. A pulsed beam of light is projected into the cloud atmosphere and a receiver receives a reflected portion of the projected pulsed beam backscattered by the cloud atmosphere. The received reflected portion is split into first and second parts. First and second parts are directed to first and second detectors, each having a different gain. A ratio of the gains of the first and second detector is greater than 3:1, thereby providing a low-gain detector for producing unsaturated signals indicative of scintillation spike reflection by large water particles and a simultaneous high-gain detector for producing signals indicative of range-resolved reflections by numerous small water particles.