Detection of stationary human target via contactless radar networks

This article deals with the problems on the time delay estimation and the vital jiggle signal detection of the stationary human target via the contactless ultra-wide band (UWB) radar. The time delay of the transmitted pulses between the radar and human target can be estimated based on the energy blocks acquired from the analyzed skewness and kurtosis. Using the index of the time delay estimation, the vital jiggle signal can be selected from the resultant matrix, which can better enhance signal to noise ratio (SNR). The feature parameter of the vital jiggle signal can be measured. Results obtained from five volunteers and one actuator show the detection capability of the designed technique.