利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

26 条记录 (耗时 0.021 秒)

    Pentagonal ring laser gyro design
    1.
    发明授权
    Pentagonal ring laser gyro design 失效
    五角环激光陀螺设计

    公开(公告)号：US4705398A

    公开(公告)日：1987-11-10

    申请号：US736035

    申请日：1985-05-20

    申请人： Wah L. Lim ,  James P. Hauck ,  Jack W. Raquet

    发明人： Wah L. Lim ,  James P. Hauck ,  Jack W. Raquet

    IPC分类号： G01C19/64 ,  G01C19/66 ,  H01S3/083 ,  G01B9/02

    CPC分类号： G01C19/661 ,  H01S3/083 ,  H01S3/0835

    摘要： A ring laser gyroscope incorporates a resonant cavity generally shaped as an irregular pentagon having a portion thereof conformed as three legs of a rectangle closed by two symmetrical other legs to form an apex. As result the enclosed area is increased, increasing sensitivity and decreasing lock-in, while magnetic effects are reduced. Additionally, the irregular shape allows for the extension of the gain medium which therefore increases the effectiveness thereof.

    摘要翻译： 环形激光陀螺仪包括通常成形为不规则五边形的共振腔，其具有由两个对称的其他腿封闭的矩形的三个腿的部分，以形成顶点。 结果，封闭区域增加，灵敏度增加和锁定减小，而磁效应降低。 此外，不规则形状允许增益介质的延伸，因此增加了增益介质的有效性。

    Communication system using multiple link terminals
    4.
    发明授权
    Communication system using multiple link terminals 有权
    通信系统使用多个链路终端

    公开(公告)号：US07181162B2

    公开(公告)日：2007-02-20

    申请号：US09967753

    申请日：2001-09-28

    申请人： Donald C. D. Chang ,  Wah L. Lim ,  Ming U. Chang

    发明人： Donald C. D. Chang ,  Wah L. Lim ,  Ming U. Chang

    IPC分类号： H04B7/185

    CPC分类号： H01Q1/007 ,  H01Q3/26 ,  H04B7/0408 ,  H04B7/18506 ,  H04B7/18508

    摘要： A communication system has a plurality of bases stations generating communication portions from a base station communication signal. The plurality of base stations are capable of using the entire allocated bandwidth to generate the base station communication portions. A user terminal establishes a plurality of dynamic links corresponding respectively to the plurality of base stations. The user terminal generates multiple communication portions of a user signal and transmits the multiple communication portions through the dynamic links to the plurality of base stations. The user terminal receives the base station communication portions from the plurality of bases stations and reassembles the communication portions into the base station communication signals.

    摘要翻译： 通信系统具有从基站通信信号生成通信部的多个基站。 多个基站能够使用整个分配的带宽来生成基站通信部分。 用户终端建立分别对应于多个基站的多个动态链路。 用户终端生成用户信号的多个通信部分，并通过动态链路将多个通信部分发送给多个基站。 用户终端从多个基站接收基站通信部分，并将通信部分重新组合成基站通信信号。

    Stratospheric platform based surface vehicle tracking and mobile data network
    5.
    发明授权
    Stratospheric platform based surface vehicle tracking and mobile data network 有权
    基于平流层平台的地面车辆跟踪和移动数据网络

    公开(公告)号：US06941107B2

    公开(公告)日：2005-09-06

    申请号：US10017249

    申请日：2001-12-14

    申请人： Donald C. D. Chang ,  Wah L. Lim ,  Ming U. Chang

    发明人： Donald C. D. Chang ,  Wah L. Lim ,  Ming U. Chang

    IPC分类号： H04B7/185

    CPC分类号： H04B7/18504

    摘要： A mobile communication system includes at least one user terminal and a plurality of satellites which transmit and receive a plurality of communication signals to and from the user terminal. The communication signals transmitted to and received from the plurality of satellites by a gateway station. The gateway station in turn is in communication with a processing center to process said communication signals. The processing center uses polystatic triangulation to determine a position of the at least one user terminal and redirect a signal from at least one said plurality of satellites in response to the determined position of the at least one user terminal.

    摘要翻译： 移动通信系统包括至少一个用户终端和向用户终端发送和从用户终端接收多个通信信号的多个卫星。 由网关站发送到多个卫星并从其接收的通信信号。 网关站又与处理中心进行通信，以处理所述通信信号。 处理中心使用聚偏转三角测量来确定至少一个用户终端的位置，并响应于所确定的至少一个用户终端的位置来重定向来自至少一个所述多个卫星的信号。

    Communication system having frequency reuse in non-blocking manner
    6.
    发明授权
    Communication system having frequency reuse in non-blocking manner 有权
    具有无阻塞方式的频率复用的通信系统

    公开(公告)号：US06725013B1

    公开(公告)日：2004-04-20

    申请号：US09594375

    申请日：2000-06-15

    申请人： Donald C. D. Chang ,  Weizheng Wang ,  Ying Feria ,  Ming U. Chang ,  Harold A. Rosen ,  Wah L. Lim

    发明人： Donald C. D. Chang ,  Weizheng Wang ,  Ying Feria ,  Ming U. Chang ,  Harold A. Rosen ,  Wah L. Lim

    IPC分类号： H04B7185

    CPC分类号： H04B7/18508

    摘要： A communications system (10) and method of operating the communications system includes a high altitude communication device (12) that communicates with a plurality of user terminals and a gateway station (30). The gateway station (30) couples the users to terrestrial networks (32) and other users. The high altitude communication device (16) has a controller that generates a second beam having the first frequency to a service (26). The stratospheric platform (12) does not generate the second beam within a blocking area. User terminals within the service area outside the blocking area are configured to receive the first beam and the second beam.

    摘要翻译： 通信系统（10）和操作通信系统的方法包括与多个用户终端和网关站（30）通信的高空通信设备（12）。 网关站（30）将用户耦合到地面网络（32）和其他用户。 高空通信设备（16）具有控制器，该控制器产生具有第一频率的服务（26）的第二波束。 平流层平台（12）不会在阻挡区域内产生第二束。 阻挡区域外的服务区域内的用户终端被配置为接收第一光束和第二光束。

    Multiple basestation communication system having adaptive antennas
    8.
    发明授权
    Multiple basestation communication system having adaptive antennas 有权
    具有自适应天线的多个基站通信系统

    公开(公告)号：US07187949B2

    公开(公告)日：2007-03-06

    申请号：US09858956

    申请日：2001-05-15

    申请人： Donald C. D. Chang ,  Wah L. Lim ,  Ming U. Chang

    发明人： Donald C. D. Chang ,  Wah L. Lim ,  Ming U. Chang

    IPC分类号： H04M1/00

    CPC分类号： H04W16/28 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q25/00 ,  H04B7/0408 ,  H04W16/26 ,  H04W84/14 ,  H04W88/085

    摘要： A communication system has a first plurality of wireless basestations having adaptive antennas with a plurality of main array antenna elements for generating a plurality of communication beams. The system further includes a gateway station coupled to the first plurality of wireless basestations. The gateway station forms a plurality of beam commands by communicating a plurality of control signals to the first plurality of wireless basestations to form the communication beams. A second plurality of wireless base stations having a second plurality of adaptive antennas with a second plurality of main array antenna elements for generating a plurality of communication beams to communicate with said mobile user and a fixed user. The beams include a first link and a second link from the first plurality of basestations that communicate with the fixed user terminal and a third link and fourth link from the second plurality of wireless basestations to communicate with the mobile user terminal.

    摘要翻译： 通信系统具有第一多个无线基站，其具有多个主阵列天线元件的自适应天线，用于产生多个通信波束。 系统还包括耦合到第一多个无线基站的网关站。 网关站通过将多个控制信号传送到第一多个无线基站来形成多个波束命令，以形成通信波束。 具有第二多个自适应天线的第二多个无线基站，具有第二多个主阵列天线元件，用于产生与所述移动用户和固定用户通信的多个通信波束。 波束包括来自与固定用户终端通信的第一多个基站的第一链路和第二链路，以及来自第二多个无线基站的第三链路和第四链路以与移动用户终端通信。

    Discriminant apparatus for laser gyros
    10.
    发明授权
    Discriminant apparatus for laser gyros 失效
    激光陀螺判别装置

    公开(公告)号：US4526469A

    公开(公告)日：1985-07-02

    申请号：US353711

    申请日：1982-03-01

    申请人： Werner H. Egli ,  Wah L. Lim ,  Mark W. Weber

    发明人： Werner H. Egli ,  Wah L. Lim ,  Mark W. Weber

    IPC分类号： H01S3/083 ,  G01C19/64 ,  G01C19/66 ,  G01P3/36 ,  G01P9/00

    CPC分类号： G01C19/665

    摘要： A discriminant apparatus for laser angular rate sensors which provides an output signal related to a selected weighted vectorial sum of the coupling of energy between counterpropagating waves traveling about a closed-loop path. The discriminant apparatus is utilized in a closed-loop control system for minimizing the lock-in rate of the sensor and/or maintaining and selecting scale factor linearity.

    摘要翻译： 一种用于激光角速度传感器的判别装置，其提供与围绕闭环路径传播的反向传播波之间的能量耦合的所选加权矢量和相关的输出信号。 鉴别装置用于闭环控制系统中，以最小化传感器的锁定速率和/或维持和选择比例因子线性度。