Micro-Doppler Signatures for Human with Orbbec Sensor

Abstract

Micro-movements, such as oscillations, rotations or revolution of an object or structures persuade additional frequency modulations on reinstate radar signal, which generates sidebands about the object’s Doppler frequency, called micro-Doppler effect. Human body mechanics consist of various moving body parts, which generate unique micro-Doppler signatures. Using TFT (time frequency transforms and pattern recognition techniques; we can classify individuals based on their movements using micro-Doppler signatures. Preliminary results from a laboratory model of the micro-Doppler radar with carrier frequency of 10 GHz are reported in this paper. The experimental analysis shows that micro-Doppler signatures have great potential for use in human identification applications.Effectiveness of electromagnetic parameters of biological medium on the propagation of electromagnetic waves radiated by an antenna implanted in the human body is under consideration. The problem of illusion, distortion, distraction, on the boundary between the biological medium and the free space is analytically solved taking into account the complex dielectric permittivity of the human body. Constructing the electromagnetic wave propagation through this boundary revealed a high attenuation of the wave radiated by an implanted antenna, which was experimentally observed.