Title :
Implementation of Step-Frequency Continuous-Wave Scheme in Millimeter-Wave Inline Holography for Interferences Elimination
Author :
Xiang Gao ; Chao Li ; Zhaoyang Sun ; Guangyou Fang
Author_Institution :
Key Lab. of Electromagn. Radiat. & Sensing Technol., Inst. of Electron., Beijing, China
Abstract :
A millimeter-wave (MMW) inline holographic imag ing method based on step-frequency continuous-wave (SFCW) scheme is presented in this letter. By analyzing and decomposing the received SFCW power in range domain, it is found that the background and twin-image interferences can be well separated from the image-related term, and therefore can be removed with appropriate range windows. Moreover, a corresponding mathematical algorithm is developed to reconstruct the image from the inline hologram. To validate the effectiveness of the presented approach, a 200-GHz prototype system is designed and fabricated. Experimental results demonstrate the good performance of the imaging system and its potential application in high-resolution target detection.
Keywords :
holography; image reconstruction; image resolution; mathematical analysis; millimetre wave imaging; object detection; radiofrequency interference; MMW inline holographic imaging method; SFCW power; SFCW scheme; frequency 200 GHz; high-resolution target detection; image reconstruction; image-related term; interference elimination; mathematical algorithm; millimeter-wave inline holography; prototype system; step-frequency continuous-wave scheme; twin-image interferences; Holography; Image reconstruction; Metals; Receiving antennas; Reflector antennas; Transmitting antennas; Image reconstruction algorithm; interferences elimination; millimeter-wave (MMW) inline holography; range domain decomposition; step-frequency continuous-wave (SFCW);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2281459
