2 results about "Melting layer" patented technology

This invention discloses a method and system for identifying layered cloud melting layers based on cloud radar, belonging to the field of cloud radar identification technology. The method includes: acquiring airborne cloud radar observation data; resampling the airborne cloud radar observation data to a unified geographic grid; for each sample, extracting continuous time periods with radar bright band characteristics and performing time averaging to obtain a comprehensive average reflectivity factor profile; calculating the vertical gradient of the comprehensive average reflectivity factor profile; and identifying the effective melting layer based on the vertical gradient. This invention automatically identifies the height of the top and bottom of the melting layer by analyzing the vertical gradient changes of reflectivity factor and vertical velocity, exhibiting high accuracy and strong adaptability.

The application discloses a laser radar melting layer height and thickness detection method based on extensible two-dimensional matching, which comprises the following steps: acquiring a multi-channel original observation signal of a laser radar, and cutting each channel signal into a preset physical reasonable value interval to obtain a preprocessed signal; constructing data normalization and a two-dimensional matrix; constructing a physical model driven multi-thickness template library; calculating the similarity value of the two-dimensional data matrix and each thickness template at different height positions by using weighted normalized cross-correlation; at the same time, based on a preset physical standard threshold, each candidate position is jointly verified by multiple channels to screen out positions meeting the physical characteristics of the melting layer; and optimal parameter determination is performed; and the application can accurately determine the height and thickness parameters of the melting layer at the same time.