Ultra-wideband radar life detection algorithm based on SE and SSD

The invention discloses an ultra-wideband radar life detection algorithm based on SE and SSD, and belongs to the technical field of radar life detection. The method comprises the following steps: firstly, preprocessing clutter and noise signals in original radar echo signals by adopting methods such as a channel signal subtraction method, a direct subtraction averaging method, linear trend suppression, automatic control gain and slow time filtering; and echo selection is carried out by calculating the time delay corresponding to the SE value peak value of the radar receiving pulse along the slow time direction, so that a target is positioned. Selecting and recombining signals on these adjacent range gates based on SE values may obtain more vital sign information than a single frame signal, and may reduce viewing time. The method comprises the following steps of: decomposing and reconstructing a radar echo signal by adopting an SSD (Solid State Disk), performing signal reconstruction according to the decompose