Patent ID: 11885718
Assignee: ROSEMOUNT AEROSPACE INC.
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 8:
9. A method for determining parameters of a cloud atmosphere within a wind tunnel, the method comprising:
projecting a pulse of light energy from a projection fiber into a projection field of view;
collimating the projection field of view via a single collimation lens having a projection axis aligned with the projection fiber, so as to create a collimated projection field of view projecting into the cloud atmosphere;
detecting a portion of the projected pulse of light energy backscattered from within range-limited intersections of a plurality of detection fields of view and the projection field of view, the detection fields of view formed by the plurality of receiver fibers aligned at different off-axis distances from the projection fiber, thereby receiving light backscattered at a plurality of different angles, thereby forming different range-limited intersections with the projection field of view, the range-limited intersections having different maximum sampling ranges that exclude wall structures of the wind tunnel, thereby permitting detection of portions of the projected pulse of light energy backscattered only from within the range-limited intersections;
collimating the plurality of detection fields of view, via the single collimation lens, so as to create collimated detection fields of view; and
determining sizes and shapes of particles within the cloud atmosphere based on the backscattered portions detected and the plurality of different angles at which the light is backscattered.