Vector Models of Non-stable and Spatially-distributed Radar Objects

Complicated orthogonal signals should be used to make a correct joint estimation of the back scattering matrix (BSM) and co-ordinate parameters of a non-stable radar object [1, 2]. It is necessary to investigate the back-scattering process corrected with the object co-ordinates in case of different signal forms are considered. As the full analytic description of a compound radar target is not possible, the digital modeling of vector signals scattered by spatially distributed objects is needed.

Methods and results of computer simulation of non-stable spatially-distributed objects presented by an aggregate of independent elementary reflectors are reported in this paper. The statistical characteristics of polarization properties and motion parameters of the elementary reflectors can be chosen arbitrary. This allows to modelling real complex radar objects. The possibility to use these models in order to analyze algorithms needed for the correct BSM of real objectsis shown. The algorithm described in the paper is based on utilizating complex orthogonal LFM and PCM signals.