Quasi-Monostatic Versus Near Forward Scatter Geometry in WiFi-Based Passive Radar Sensors

In this paper, the comparison is investigated between quasi-monostatic and near forward scatter configurations for WiFi-based passive radar sensors. To this purpose, a barrier coverage application for vehicular targets is considered as a possible implementation of the conceived green sensor within surface transportation monitoring solutions. The performance of the two alternative sensor geometries are compared by means of theoretical and experimental analysis as well as based on considerations on the practical implementation. The reported results provide a realistic characterization of the performance of a bistatic radar sensor to be exploited in barrier coverage problems and give indications for the design of such a system. The specific demonstration with WiFi-based passive radar aims at extending the use of this emerging technology to perimeter monitoring applications for vehicular targets, exploiting the near forward scatter geometry.

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