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    • 9. 发明申请
    • DIRECT COMBINATION OF FIBER OPTIC LIGHT BEAMS
    • 光纤光束的直接组合
    • US20050270542A1
    • 2005-12-08
    • US09933606
    • 2001-08-20
    • Mark SullivanCarol CourvillePaul ZorabedianKerry BagwellDavid Kittell
    • Mark SullivanCarol CourvillePaul ZorabedianKerry BagwellDavid Kittell
    • G01B9/02G02B26/08G02B27/28G02F2/02
    • G01B9/02007G01B9/02003G01B2290/45G01B2290/70
    • A manipulator for a fiber optic cable assembly (FOCA) provides microradian accuracy in control of the direction of a beam emanating from the FOCA. Such manipulators can control FOCAs to control the incidence angles of beams at a beam combiner in a beam-combining unit. Accordingly, fewer additional optical elements are required for control of input paths in the beam-combining unit. The manipulator and the beam-combining unit are accurate enough for use in an interferometer that combines beams with different frequencies and polarizations. One such interferometer includes a Zeeman split laser providing a heterodyne beam. A beam splitter separates frequency components of the beams, and AOMs increase the frequency separation between the separated beams. The separated beams can be sent via optical fibers to the beam-combining unit, which combines the beams for use in interferometer optics.
    • 用于光纤电缆组件(FOCA)的操纵器提供微控制精度来控制从FOCA发射的光束的方向。 这样的操纵器可以控制FOCA来控制波束组合单元中的波束组合器处的波束的入射角。 因此,需要更少的附加光学元件来控制光束组合单元中的输入路径。 操纵器和光束组合单元足够准确地用于组合具有不同频率和偏振的光束的干涉仪。 一种这样的干涉仪包括提供外差光束的塞曼分割激光器。 分束器分离光束的频率分量,并且AOM增加分离的光束之间的频率间隔。 分离的光束可以通过光纤发送到光束组合单元,其组合用于干涉仪光学元件的光束。
    • 10. 发明申请
    • System and method for fast acquisition position reporting using communication satellite range measurement
    • 使用通信卫星测距的快速采集位置报告的系统和方法
    • US20050171695A1
    • 2005-08-04
    • US11030983
    • 2005-01-10
    • Mark SullivanJames Kifeather
    • Mark SullivanJames Kifeather
    • G01S5/00G01S5/14G01S19/48G01C21/26
    • G01S19/09G01S5/0036G01S5/14G01S19/256G01S19/40
    • A geographic tracking system with minimal power and size required at the mobile terminal collects observation data at the mobile terminal, forwards the data to a processor, which calculates the position. The mobile terminal needs only to gather a few milliseconds of observation data, and to relay this observation data to the processor. The range from the satellite (or other airborne transponder) to the terminal is determined using the known positions of an interrogating transmitter and a satellite, and a known terminal delay between the received signal and the transmission of the return signal, and the round trip time. An arc of locations is determined by computing an intersection of a sphere centered at the satellite having a radius given by the calculated range with a model of the Earth's surface. The candidate points are considered and refined using code phase measurements from a set of GPS satellites. The candidate point having the lowest residuals or expected to measured code phases is chosen as the location of the mobile terminal. The measurements can be refined to account for various sources of error including measurement bias, relative motion and timing errors.
    • 移动终端所需的功率和尺寸最小的地理跟踪系统在移动终端收集观测数据,将数据转发到计算位置的处理器。 移动终端仅需要收集几毫秒的观测数据,并将该观测数据中继到处理器。 使用询问发射机和卫星的已知位置以及接收信号与返回信号的发送之间的已知终端延迟以及往返时间来确定从卫星(或其他机载应答器)到终端的范围 。 通过计算以具有由计算范围给出的半径的卫星为中心的球体与地球表面的模型的交点来确定位置弧。 使用一组GPS卫星的码相位测量来考虑和改进候选点。 选择具有最低残差或预期测量码相位的候选点作为移动终端的位置。 可以对测量结果进行细化以解决各种误差源,包括测量偏差,相对运动和定时误差。