发明申请
- 专利标题: HIGH-RESOLUTION THREE-DIMENSIONAL IMAGING RADAR
- 专利标题(中): 高分辨率三维成像雷达
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申请号: US12135040申请日: 2008-06-06
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公开(公告)号: US20080304044A1公开(公告)日: 2008-12-11
- 发明人: Ken B. Cooper , Goutam Chattopadhyay , Peter H. Siegel , Robert J. Dengler , Erich T. Schlecht , Imran Mehdi , Anders J. Skalare
- 申请人: Ken B. Cooper , Goutam Chattopadhyay , Peter H. Siegel , Robert J. Dengler , Erich T. Schlecht , Imran Mehdi , Anders J. Skalare
- 申请人地址: US CA Pasadena
- 专利权人: California Institute of Technology
- 当前专利权人: California Institute of Technology
- 当前专利权人地址: US CA Pasadena
- 主分类号: G01C3/08
- IPC分类号: G01C3/08
摘要:
A three-dimensional imaging radar operating at high frequency e.g., 670 GHz, is disclosed. The active target illumination inherent in radar solves the problem of low signal power and narrow-band detection by using submillimeter heterodyne mixer receivers. A submillimeter imaging radar may use low phase-noise synthesizers and a fast chirper to generate a frequency-modulated continuous-wave (FMCW) waveform. Three-dimensional images are generated through range information derived for each pixel scanned over a target. A peak finding algorithm may be used in processing for each pixel to differentiate material layers of the target. Improved focusing is achieved through a compensation signal sampled from a point source calibration target and applied to received signals from active targets prior to FFT-based range compression to extract and display high-resolution target images. Such an imaging radar has particular application in detecting concealed weapons or contraband.
公开/授权文献
- US07773205B2 High-resolution three-dimensional imaging radar 公开/授权日:2010-08-10