Dual-Target Respiratory Signal Detection Based on Ultra-wideband Radar

To solve the problem of non-contact multi-target respiratory detection, a dual-target respiratory measurement system was built based on ultra-wideband radar technology. The time domain echo signals of the two targets are collected to construct a distance-dimension and slow time matrix, the respiratory frequency and location information of the targets are obtained by signal processing such as time-frequency change and digital filtering, so as to provide theoretical and practical basis for multi-target respiratory detection and location. The actual test results showed that this method can accurately separate the respiratory signals of the two targets, meanwhile, providing the measurement of the respiratory frequency and location information of the targets, which has good reliability and strong anti-interference ability.