Title :
A High-Resolution Imaging Radar at 580 GHz
Author :
Cooper, K.B. ; Dengler, R.J. ; Chattopadhyay, G. ; Schlecht, E. ; Gill, J. ; Skalare, A. ; Mehdi, I. ; Siegel, P.H.
Author_Institution :
California Inst. of Technol., Pasadena
Abstract :
We have developed a high-resolution imaging radar at 580 GHz. Coherent illumination in the 576-589 GHz range and phase-sensitive detection are implemented in an all-solid-state design based on Schottky diode sensors and sources. By employing the frequency-modulated continuous wave (FMCW) radar technique, we achieve centimeter-scale range resolution while utilizing fractional bandwidths of less than 3%. Our high operating frequencies also permit centimeter-scale cross-range resolution at several-meter standoff distances without large apertures. Scanning of a single-pixel transceiver enables targets to be rapidly mapped in three dimensions, and here we apply this technology to the detection of concealed objects on persons.
Keywords :
CW radar; FM radar; Schottky diodes; radar detection; radar imaging; radar resolution; Schottky diode sensors; all-solid-state design; centimeter-scale range resolution; coherent illumination; frequency 576 GHz to 589 GHz; frequency 580 GHz; frequency-modulated continuous wave radar technique; high-resolution imaging radar; phase-sensitive detection; single-pixel transceiver; Apertures; Bandwidth; Frequency; High-resolution imaging; Lighting; Phase detection; Radar detection; Radar imaging; Schottky diodes; Transceivers; Frequency-modulated continuous wave (FMCW); submillimeter radar; terahertz (THz) imaging; terahertz (THz) radar;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2007.912049
