Integral-differential models of characteristic functions of 3D terahertz FMCW radar

Problems of spectral estimation of parameters of signal beats in the 3D terahertz FMCW radar are discussed. It is claimed that these problems are due to short time of observation, the low resolution of the classical spectral methods and significant noise that prevents from using parametric methods. Possibilities of using integral-differential harmonic oscillation properties for a variety of discrete integral-differential of models are considered. The results of the pilot study of one differential and two integrated models are presented.