A millimeter wave living body detection method

Abstract

The application discloses a kind of millimeter wave living body detection methods, comprising: multiple millimeter wave detection modules are arranged in detection channel, and multiple-view observation is carried out to the detected target;Millimeter wave detection module under the local reference of its radio frequency front end, the millimeter wave echo signal of detected target is collected;Local phase stabilization processing and micro-motion feature extraction are carried out to millimeter wave echo signal, and feature information representing target micro-motion characteristics is obtained;Based on micro-motion feature information, generate detection result for representing whether there is living body;Detection result is sent to central control terminal;Based on the consistency relationship between multiple detection results from different spatial orientations, it is comprehensively judged whether there is living body in detected target.The application completes phase level processing before millimeter wave echo cross-module transmission, avoids the degradation of micro-motion feature caused by inconsistent phase reference under centralized processing architecture, and improves the stability and reliability of living body detection by combining multiple-view redundancy consistency determination.

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