PROJECT TITLE :

Towards Three-Dimensional Millimeter-Wave Radar With the Bistatic Fast-Factorized Back-Projection Algorithm—Potential and Limitations

ABSTRACT:

In this paper, we report on a time-domain approach for three-D synthetic image reconstruction at stand-off distances referred to as the bistatic fast-factorized back-projection (BiFFBP) algorithm. Although the algorithm is suited to multiple purposes, it is applied in this paper to a millimeter-wave radar system that operates in a frequency-modulated continuous-wave mode between 234 and 306 GHz. Once initially mapping the bistatic to a quasi-monostatic configuration, the algorithm recursively factorizes each, the aperture positions and therefore the target space. Three-dimensional reconstructions are shown for a simulated point-target so as to judge the point-spread-function of the system. Additionally, two-D-imaging is performed on real objects at stand-off distances employing a scanner system that consists of eight transmitters and 16 receivers. Reconstructions with the BiFFBP-algorithm are compared with the world back-projection (GBP) algorithm that serves as a benchmark. The results show that the BiFFBP-approach yields similar results to the GBP with respect to dynamic vary within the image and the image quality. It's also shown that a resolution of 2 cm can be achieved with relatively few parts, no scanning, and over a massive field-of-read.