SYSTEM AND METHOD FOR INCREASING POWER EMITTED FROM A FIBER LASER
    204.
    发明申请
    SYSTEM AND METHOD FOR INCREASING POWER EMITTED FROM A FIBER LASER 有权
    用于增加从光纤激光器发射的功率的系统和方法

    公开(公告)号:US20160294150A1

    公开(公告)日:2016-10-06

    申请号:US15090118

    申请日:2016-04-04

    Abstract: A fiber laser having a thermal controller operatively connected to one or more fiber Bragg gratings is provided. The thermal controller does not impart much or imparts very little mechanical stress or strain to the optical fiber in which the FBGs reside because such forces can alter the FBG performance. Rather, the thermal controller utilizes a thermally conductive semi-solid or non-Newtonian fluid to submerge/suspend a portion of the optical fiber in which FBG resides. Temperature control logic controls whether a thermoelectric heater and cooler should be directed to increase or decrease its temperature. The thermoelectric heater and cooler imparts or removes thermal energy from the FBG to efficiently control its performance without the application of mechanical stress. The fiber laser having a thermal controller generally is able to increase laser output power greater than two times the amount of output power of a similarly fabricated fiber laser free of the thermal controller(s).

    Abstract translation: 提供了具有可操作地连接到一个或多个光纤布拉格光栅的热控制器的光纤激光器。 热控制器对FBG所在的光纤不施加太大的力或非常小的机械应力或应变,因为这样的力可以改变FBG性能。 相反,热控制器利用导热半固体或非牛顿流体来淹没/悬挂FBG所在的光纤的一部分。 温度控制逻辑控制是否应引导热电加热器和冷却器来增加或降低其温度。 热电加热器和冷却器从FBG施加或去除热能,以有效地控制其性能而不施加机械应力。 具有热控制器的光纤激光器通常能够增加大于不含热控制器的类似制造的光纤激光器的输出功率的两倍的激光输出功率。

    N-path cascode transistor output switch for a digital to analog converter
    205.
    发明授权
    N-path cascode transistor output switch for a digital to analog converter 有权
    用于数模转换器的N路径共源共栅晶体管输出开关

    公开(公告)号:US09450595B2

    公开(公告)日:2016-09-20

    申请号:US14958051

    申请日:2015-12-03

    Abstract: Techniques are provided for a switched output digital to analog converter employing an N-path cascode output switch. An example system may include a plurality of cascode transistors coupled in parallel to an output stage of a current mode digital to analog converter (DAC) circuit. The system may also include a plurality of control ports, each of the control ports coupled to a gate of one of the cascode transistors. The system may further include a plurality of output ports, each output port coupled to one of the cascode transistors. The cascode transistors are configured to switch the output stage of the DAC to the output port of the transistor in response to a routing control signal applied to the control port of the transistor. The cascode transistors are High Electron Mobility Transistors (HEMT) fabricated from Gallium Nitride.

    Abstract translation: 为采用N路径共源共栅输出开关的开关输出数模转换器提供技术。 一个示例系统可以包括并联耦合到电流模式数模转换器(DAC)电路的输出级的多个共源共栅晶体管。 该系统还可以包括多个控制端口,每个控制端口耦合到一个共源共栅晶体管的栅极。 该系统还可以包括多个输出端口,每个输出端口耦合到一个共源共栅晶体管。 串联晶体管被配置为响应于施加到晶体管的控制端口的路由控制信号而将DAC的输出级切换到晶体管的输出端口。 共源共栅晶体管是由氮化镓制造的高电子迁移率晶体管(HEMT)。

    Method and apparatus for establishing a north reference for inertial measurement units using scene correlation
    206.
    发明授权
    Method and apparatus for establishing a north reference for inertial measurement units using scene correlation 有权
    使用场景相关性建立惯性测量单元北参考的方法和装置

    公开(公告)号:US09418430B2

    公开(公告)日:2016-08-16

    申请号:US14505979

    申请日:2014-10-03

    Abstract: A scene correlation-based target system and related methods are provided. A reference image depicts a remotely-positioned object having identifiable characteristics, wherein a reference directional vector is established relative to the reference image. A target image of a general vicinity of the remotely-positioned object has an unknown directional vector, the target image having at least a portion of the identifiable characteristics. An inertial measuring unit has a scene correlation system, wherein the scene correlation system matches the portion of the identifiable characteristics of the target image with the identifiable characteristics of the reference image, wherein a slew angle between the reference image and the target image is calculated. A target image directional vector is derived from the calculated slew angle and the reference directional vector.

    Abstract translation: 提供了一种基于场景相关性的目标系统及相关方法。 参考图像描绘具有可识别特征的远程定位对象,其中相对于参考图像建立参考方向向量。 远程定位对象的普通附近的目标图像具有未知的方向向量,目标图像具有至少一部分可识别特征。 惯性测量单元具有场景相关系统,其中场景相关系统将目标图像的可识别特征的一部分与参考图像的可识别特征相匹配,其中计算参考图像与目标图像之间的转换角度。 从计算的转换角和参考方向向量导出目标图像方向向量。

    Geolocation using high order statistics

    公开(公告)号:US09383203B2

    公开(公告)日:2016-07-05

    申请号:US14107215

    申请日:2013-12-16

    Inventor: Webster Dove

    CPC classification number: G01C15/00 G01S5/0252

    Abstract: A specific emitter identification (SEI) method and apparatus is capable of identifying and tracking objects within a geographical area of interest wherein the system and method has not been preprogrammed to look for particular signals. The system and method receives all of the emitted electromagnetic signals emitted from area of interest. The system and method next performs high order statistical analysis on the received signals and determines which signals emanate from possible targets of interest and which likely emanate from background clutter/noise by comparing the relative degrees of Gaussianness of the signals (for example using entropy measurements). The least Gaussian signals are deemed to likely be signals from potential targets of interest while those which are more Gaussian are deemed to be likely from background clutter or noise.

    System and method for using a portable near IR LED light source and photogrammetry for boresight harmonization of aircraft and ground vehicle components
    208.
    发明授权
    System and method for using a portable near IR LED light source and photogrammetry for boresight harmonization of aircraft and ground vehicle components 有权
    使用便携式近红外LED光源和摄影测量技术进行飞机和地面车辆部件的视轴协调的系统和方法

    公开(公告)号:US09360372B2

    公开(公告)日:2016-06-07

    申请号:US13818500

    申请日:2012-06-13

    Inventor: Michael W. Hale

    CPC classification number: G01J5/02 G01C11/02

    Abstract: Disclosed is a system and method for using a portable near (infrared light emitting diode) IR LED light source and photogrammetry for boresight harmonization of aircraft and ground vehicle components. In one embodiment, orientation and positional parameters of two or more fixed points and distances between the two or more fixed points are measured using the portable near IR LED light source with a photogrammetric system. The two or more fixed points are reference points within the aircraft or the land vehicle. Further, the measured orientation and positional parameters of the two or more fixed points and the distances between the two or more fixed points on the aircraft or the land vehicle are compared with specified design parameters of the component in the aircraft or the land vehicle. Furthermore, the component in the aircraft or the land vehicle is harmonized based on an outcome of the comparison.

    Abstract translation: 公开了一种使用便携式近(红外发光二极管)IR LED光源和摄影测量用于飞机和地面车辆部件的视轴协调的系统和方法。 在一个实施例中,使用具有摄影测量系统的便携式近红外LED光源来测量两个或多个固定点的取向和位置参数以及两个或更多个固定点之间的距离。 两个或多个固定点是飞机或陆地车辆中的参考点。 此外,将两个或多个固定点的测量取向和位置参数以及飞机或陆上车辆上的两个或更多个固定点之间的距离与飞行器或陆地车辆中的部件的指定设计参数进行比较。 此外,基于比较的结果,对飞机或陆地车辆中的部件进行协调。

    Method for polishing photonic chips
    209.
    发明授权
    Method for polishing photonic chips 有权
    抛光光子芯片的方法

    公开(公告)号:US09354393B2

    公开(公告)日:2016-05-31

    申请号:US14790963

    申请日:2015-07-02

    Abstract: A method for polishing photonic chips is described. A gauge is placed in a photonic chip adjacent to an edge to be polished. The gauge includes a set of bars of various lengths. The bar lengths can be progressively ordered from shortest to longest or vice versa. The photonic chip is then secured in a chip polishing jig to get ready for polishing. When the photonic chip is being polished, an operator can visually inspect the gauge by looking at the polishing edge to estimate a polishing depth in order to determine a stopping point for polishing. Once the stopping point has been reached, the polishing of the photonic chip can be stopped.

    Abstract translation: 描述了抛光光子芯片的方法。 将量规放置在与要抛光的边缘相邻的光子芯片中。 量规包括一组不同长度的棒。 条形长度可以从最短到最长排序,反之亦然。 然后将光子芯片固定在芯片抛光夹具中以准备抛光。 当光子芯片被抛光时,操作者可以通过观察抛光边缘来目视检查量规来估计抛光深度,以便确定抛光的停止点。 一旦达到停止点,就可以停止抛光光子芯片。

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