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    • 3. 发明申请
    • HIGH-RESOLUTION THREE-DIMENSIONAL IMAGING RADAR
    • 高分辨率三维成像雷达
    • US20080304044A1
    • 2008-12-11
    • US12135040
    • 2008-06-06
    • Ken B. CooperGoutam ChattopadhyayPeter H. SiegelRobert J. DenglerErich T. SchlechtImran MehdiAnders J. Skalare
    • Ken B. CooperGoutam ChattopadhyayPeter H. SiegelRobert J. DenglerErich T. SchlechtImran MehdiAnders J. Skalare
    • G01C3/08
    • G01S13/89G01S13/34G01S13/887
    • 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.
    • 公开了以高频例如670GHz操作的三维成像雷达。 雷达固有的有源目标照明通过使用亚毫米外差式混频器接收机解决了低信号功率和窄带检测问题。 亚毫米成像雷达可以使用低相位噪声合成器和快速啁啾来产生调频连续波(FMCW)波形。 通过针对在目标上扫描的每个像素导出的范围信息生成三维图像。 可以在每个像素的处理中使用峰值发现算法来区分目标的材料层。 通过从点源校准目标采样的补偿信号实现改进的聚焦,并且在基于FFT的范围压缩之前应用于来自活动目标的接收信号以提取和显示高分辨率目标图像。 这种成像雷达在检测隐藏的武器或违禁品方面具有特殊的应用。
    • 4. 发明授权
    • High-resolution three-dimensional imaging radar
    • 高分辨率三维成像雷达
    • US07773205B2
    • 2010-08-10
    • US12135040
    • 2008-06-06
    • Ken B. CooperGoutam ChattopadhyayPeter H. SiegelRobert J. DenglerErich T. SchlechtImran MehdiAnders J. Skalare
    • Ken B. CooperGoutam ChattopadhyayPeter H. SiegelRobert J. DenglerErich T. SchlechtImran MehdiAnders J. Skalare
    • G01C3/08G01S13/28
    • G01S13/89G01S13/34G01S13/887
    • 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.
    • 公开了以高频例如670GHz操作的三维成像雷达。 雷达固有的有源目标照明通过使用亚毫米外差式混频器接收机解决了低信号功率和窄带检测问题。 亚毫米成像雷达可以使用低相位噪声合成器和快速啁啾来产生调频连续波(FMCW)波形。 通过针对在目标上扫描的每个像素导出的范围信息生成三维图像。 可以在每个像素的处理中使用峰值发现算法来区分目标的材料层。 通过从点源校准目标采样的补偿信号实现改进的聚焦,并且在基于FFT的范围压缩之前应用于来自活动目标的接收信号以提取和显示高分辨率目标图像。 这种成像雷达在检测隐藏的武器或违禁品方面具有特殊的应用。