公开(公告)号：US06600320B2

公开(公告)日：2003-07-29

申请号：US09928632

申请日：2001-08-13

申请人： Yanping Guo ,  Harvey W. Ko ,  Carl V. Nelson ,  David M. White

发明人： Yanping Guo ,  Harvey W. Ko ,  Carl V. Nelson ,  David M. White

IPC分类号： G01V308

CPC分类号： G01V3/15 ,  G01V3/12

摘要： A unique time-domain electromagnetic system and data processing technique which, using low frequency electromagnetic fields, can localize, in three-dimensions, the position of buried metallic objects is disclosed. The measurement system uses time-domain electromagnetic techniques on a scanning frame similar to a X-Y plotter. The system collects magnetic data over a large area above the buried object. The spatial information of the field detected on the ground is then processed with an unique ‘nearfield holographic’ data processing method to reconstruct the field image of the buried object.

摘要翻译： 公开了一种使用低频电磁场的独特的时域电磁系统和数据处理技术，可以三维定位埋藏金属物体的位置。 测量系统在类似于X-Y绘图仪的扫描框架上使用时域电磁技术。 该系统在掩埋物体上方的大面积上收集磁性数据。 然后用独特的“近场全息”数据处理方法处理在地面上检测到的场的空间信息，以重建被埋物体的场图像。

公开(公告)号：US6084412A

公开(公告)日：2000-07-04

申请号：US824644

申请日：1997-03-24

申请人： Yanping Guo ,  Harvey W. Ko ,  Carl V. Nelson ,  David M. White

发明人： Yanping Guo ,  Harvey W. Ko ,  Carl V. Nelson ,  David M. White

IPC分类号： G01V3/11 ,  G01V3/12 ,  G01V3/15 ,  C01V3/11 ,  G01N27/72 ,  C01V3/36 ,  C01V3/38

CPC分类号： G01V3/15 ,  G01V3/12

摘要： A unique time-domain electromagnetic system and data processing technique which, using low frequency electromagnetic fields, can localize, in three-dimensions, the position of buried metallic objects is disclosed. The measurement system uses time-domain electromagnetic techniques on a scanning frame similar to a X-Y plotter. The system collects magnetic data over a large area above the buried object. The spatial information of the field detected on the ground is then processed with an unique `nearfield holographic` data processing method to reconstruct the field image of the buried object.

摘要翻译： 公开了一种使用低频电磁场的独特的时域电磁系统和数据处理技术，可以三维定位埋藏金属物体的位置。 测量系统在类似于X-Y绘图仪的扫描框架上使用时域电磁技术。 该系统在掩埋物体上方的大面积上收集磁性数据。 然后用独特的“近场全息”数据处理方法处理在地面上检测到的场的空间信息，以重建掩埋物体的场图像。

公开(公告)号：US5379136A

公开(公告)日：1995-01-03

申请号：US130700

申请日：1993-10-04

申请人： Shouxiang Hu ,  Yanping Guo

发明人： Shouxiang Hu ,  Yanping Guo

IPC分类号： G02F1/03 ,  G02F1/133 ,  H01J31/24

CPC分类号： G02F1/133348 ,  G02F1/0333

摘要： An electron beam addressed electro-optical (EO) light valve (EOLV) having a matrix of openings formed on and extending through an input conductive layer and further extends into an electrically insulating layer. A partially conductive coating is formed on the surface of each opening in the insulating layer, and has a substantially good electrical contact with the input conductive layer. An EO layer, formed of either a liquid crystal (LC) or a solid state EO crystal, is positioned on the optical output side of the insulating layer. Through the openings electrons from a scanning electron beam can reach and be directly deposited on the partially conductive coatings at a depth substantially close to the EO layer and substantially far away from the input conductive layer. The insulating material surrounding the openings in the insulating layer strictly prevents these deposited electrons from inter-opening motion. These deposited electrons are then discharged along the partially conductive coatings to the input conductive layer before the next scanning cycle. Accordingly, a precisely controllable voltage across each pixel of the EO layer can be obtained. This makes it possible to obtain a precisely controllable orientation state of the molecules in each pixel of the EO layer corresponding to the modulation of the scanning electron beam. Thus an EOLV with significantly high resolution, high contrast ratio, fast response speed, high display gray scale and high sensitivity responding to the input modulation can be achieved according to this invention.

摘要翻译： 电子束寻址电光（EO）光阀（EOLV），其具有形成在输入导电层上并通过输入导电层延伸的开口矩阵，并进一步延伸到电绝缘层中。 在绝缘层中的每个开口的表面上形成部分导电的涂层，并且与输入导电层具有实质上良好的电接触。 由液晶（LC）或固态EO晶体形成的EO层位于绝缘层的光输出侧。 通过这些开口，来自扫描电子束的电子可以达到并直接沉积在基本上接近EO层的深度并且基本上远离输入导电层的部分导电涂层上。 围绕绝缘层的开口的绝缘材料严格地防止这些沉积的电子开启间的运动。 然后在下一个扫描周期之前，将这些沉积的电子沿着部分导电涂层排放到输入导电层。 因此，可以获得跨越EO层的每个像素的精确可控电压。 这使得可以获得对应于扫描电子束的调制的EO层的每个像素中的分子的精确可控取向状态。 因此，根据本发明，可以实现响应于输入调制的具有高分辨率，高对比度，快速响应速度，高显示灰度和高灵敏度的EOLV。

公开(公告)号：US06622970B2

公开(公告)日：2003-09-23

申请号：US10129160

申请日：2002-05-01

申请人： Yanping Guo

发明人： Yanping Guo

IPC分类号： B64G136

CPC分类号： G01C21/24 ,  B64G1/242 ,  B64G1/361 ,  B64G1/363 ,  B64G1/365 ,  B64G1/366 ,  G01C21/025 ,  G01S3/7862 ,  G01S11/12 ,  G05D1/0883

摘要： A method and apparatus for autonomous navigation for deep space missions using the sun as the reference body and determining the spacecraft orbit based on observations made on the sun using onboard instruments. Two types of observation data, the direction of the spacecraft relative to the sun as a function of time and the optical Doppler shift due to the motion of the spacecraft relative to the sun, can be used for the spacecraft orbit determination. A dual imaging system which functions as a sun imager taking images of the sun against star backgrounds during the cruise phase and as a regular optical imager taking pictures of the targeting planetary body during the approaching phase is also described.

公开(公告)号：US06449084B1

公开(公告)日：2002-09-10

申请号：US09567151

申请日：2000-05-09

申请人： Yanping Guo

发明人： Yanping Guo

IPC分类号： G02F129

CPC分类号： G02F1/295

摘要： An electrooptical deflector that overcomes conventional geometry limitations and can deflect an optical beam at high speed with high deflection angle and high resolution. It comprises an array of waveguide optical channels having an electrooptical layer sandwiched between a bottom and a top electrodes. Either the top electrode further comprises two sets of prism-shaped electrodes; or, the electrooptical layer further comprises two sets of prism-shaped spontaneous polarization domain regions. Linear phase differences are induced among a group of sub-light beams travelling in the individual optical channels. After leaving the individual optical channels, the sub-light beams are merged and the merged light beam is deflected along a direction depending on a voltage or a pair of voltages applied between the top and bottom electrodes. The optical defector requires one or a pair of low driving voltage(s) with a simple driving scheme. It is suitable for many important applications, such as optical switching, high quality retinal display in potable computer, video and virtual reality devices, optical processing, pattern recognition, laser printing and bar code scanning.

摘要翻译： 一种电光偏转器，克服了传统的几何形状限制，并能以高偏转角和高分辨率高速偏转光束。 它包括具有夹在底部电极和顶部电极之间的电光学层的波导光学通道的阵列。 顶部电极还包括两组棱柱形电极; 或者，电光层还包括两组棱镜形自发极化畴区域。 在各个光通道中传播的一组子光束之间引发线性相位差。 在离开各个光通道之后，子光束被合并，并且合并的光束沿着取决于施加在顶部和底部电极之间的电压或一对电压的方向偏转。 光学缺陷器需要一个或一对低驱动电压，具有简单的驱动方案。 适用于许多重要应用，如光学切换，饮用电脑中的高质量视网膜显示，视频和虚拟现实设备，光学处理，图案识别，激光打印和条码扫描。