Abstract-Terahertz active imaging radar: preprocessing and experiment results

Gang Yao and Yiming Pi,

EURASIP Journal on Wireless Communications and Networking 2014, 2014:10  doi:10.1186/1687-1499-2014-10

http://jwcn.eurasipjournals.com/content/2014/1/10/abstract

A terahertz (THz) radar provides the possibility of higher precision imaging due to the wider bandwidth. A summary of a THz imaging radar system is presented with emphasis on THz radar component design, system design, and detective imaging. In this article, we introduce a linear frequency-modulated continuous wave (LFMCW) radar system with a 4.8-GHz bandwidth and theoretical resolution of 3.125 cm. The heterodyne RF receiver structure is applied to the system to reduce the sampling rate. A non-linear correction method is applied to compensate the range backscatter signal. With the presented LFMCW radar system, high-resolution images (3.5 cm ? 3.5 cm) are achieved using the ISAR imaging technique. The experiments performed on the real LFMCW radar data have shown the capability of high-resolution imaging.