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    • 11. 发明授权
    • Holographic arrays for multi-path imaging artifact reduction
    • 用于多路径成像伪像减少的全息阵列
    • US07295146B2
    • 2007-11-13
    • US11088470
    • 2005-03-24
    • Douglas L. McMakinDavid M. SheenThomas E. Hall
    • Douglas L. McMakinDavid M. SheenThomas E. Hall
    • G01S13/89
    • G01S13/89G01S7/026H01Q1/22
    • A method and apparatus to remove human features utilizing at least one transmitter transmitting a signal between 200 MHz and 1 THz, the signal having at least one characteristic of elliptical polarization, and at least one receiver receiving the reflection of the signal from the transmitter. A plurality of such receivers and transmitters are arranged together in an array which is in turn mounted to a scanner, allowing the array to be passed adjacent to the surface of the item being imaged while the transmitter is transmitting electromagnetic radiation. The array is passed adjacent to the surface of the item, such as a human being, that is being imaged. The portions of the received signals wherein the polarity of the characteristic has been reversed and those portions of the received signal wherein the polarity of the characteristic has not been reversed are identified. An image of the item from those portions of the received signal wherein the polarity of the characteristic was reversed is then created.
    • 一种利用至少一个发射机在200MHz和1Hz之间传输信号的信号去除人体特征的方法和装置,所述信号具有至少一个椭圆偏振特征,以及至少一个接收器,其接收来自发射机的信号的反射。 多个这样的接收器和发射器被布置在阵列中,阵列依次安装到扫描器,允许阵列在发射器正在传送电磁辐射的同时被邻近待成像物品的表面通过。 该阵列被邻近物体的表面传递,例如正被成像的物体的表面。 识别出特性极性已反转的接收信号的部分,特征的极性未被反转的接收信号的那些部分。 然后产生从接收信号的那些部分中的特征的极性反转的图像。
    • 18. 发明授权
    • Method for X-ray fluorescence spectroscopy
    • X射线荧光光谱法
    • US4510573A
    • 1985-04-09
    • US260984
    • 1981-05-06
    • William C. BoyceWarren D. WittekindLeroy C. HowardThomas E. HallWayne M. Lechelt
    • William C. BoyceWarren D. WittekindLeroy C. HowardThomas E. HallWayne M. Lechelt
    • G01N23/223G01V5/12G06F15/46G01N23/00
    • G01V5/12
    • A method and apparatus are described for performing X-ray fluorescence analysis where the physical relationship between the source/detector and the object being examined is not controlled. This technique and apparatus is particularly advantageous in performing an in situ analysis of the concentration of one or more elements present in a matrix of a material such as rock. In accordance with this aspect of our invention, such a mineral assay is performed by drilling a borehole into the matrix, inserting into the borehole a probe containing a suitable XRF source/detector, irradiating the matrix, detecting the spectrum of radiation that is produced and analyzing this spectrum. Preferably, the concentration of the assayed element is determined from the following formula: ##EQU1## where S is the number of photons counted having energies in a signal range where the X-ray spectral line of the assayed element is observed, C is the number of photons counted in a range where a radiation peak is observed, B is the number of photons counted in a background range, E is the number of photons counted in a range adjacent that where said radiation peak is observed, and K.sub.1 through K.sub.6 are empirically determined constants relating to the performance of the probe.
    • 描述了用于进行X射线荧光分析的方法和装置,其中源/检测器和被检查物体之间的物理关系不被控制。 这种技术和设备在对诸如岩石的材料的基质中存在的一种或多种元素的浓度进行原位分析是特别有利的。 根据本发明的这个方面,这种矿物测定是通过将​​钻孔钻入基质中,将含有适合的XRF源/检测器的探针插入钻孔中,照射基质,检测产生的辐射光谱, 分析这个频谱。 优选地,所测定的元素的浓度由下式确定:其中S是在观测到测定元素的X射线谱线的信号范围内具有能量的光子数,C是数目 在观察到辐射峰的范围内计数的光子,B是在背景范围内计数的光子数,E是在与观察到所述辐射峰的范围相邻的范围内计数的光子数,K1至K6是经验性的 确定与探头性能有关的常数。