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    Method and apparatus for automatic tracking of an optical signal in a wireless optical communication system
    3.
    发明授权
    Method and apparatus for automatic tracking of an optical signal in a wireless optical communication system 有权
    在无线光通信系统中自动跟踪光信号的方法和装置

    公开(公告)号：US06792185B1

    公开(公告)日：2004-09-14

    申请号：US09516268

    申请日：2000-02-29

    申请人： Robert George Ahrens ,  Herman Melvin Presby ,  Gerald E. Tourgee ,  John Anthony Tyson

    发明人： Robert George Ahrens ,  Herman Melvin Presby ,  Gerald E. Tourgee ,  John Anthony Tyson

    IPC分类号： G02B604

    CPC分类号： H04B10/1121

    摘要： A method and apparatus are disclosed for aligning and maintaining the alignment of the transmitting unit and the receiving unit in an optical wireless communication system. The receiving unit includes an optical bundle positioned at the focal point of an objective optic element. The optical bundle is comprised of an array of optical fibers, arranged surrounding the receiving fiber. The receiving unit also includes a number of detectors that measure the optical signal strength on a corresponding fiber in the optical bundle. The array of fibers is used to detect the location of the received signal relative to the receiving optical fiber and to provide feedback to adjust the orientation of the optical bundle to optimize the received signal strength. When misalignment occurs between the received signal and the receiving fiber, some of the incident received signal will be captured by one or more of the outer optical fibers. The amplitude of each of the generated signals are then compared to each other, thereby giving a direction in which to drive the optical bundle back into alignment with the received signal. The present invention provides automatic tracking using the information-carrying optical signal, without the need for a separate laser.

    摘要翻译： 公开了用于在光学无线通信系统中对准和维持发送单元和接收单元的对准的方法和装置。 接收单元包括位于物镜光学元件的焦点处的光束。 光束由围绕接收光纤布置的光纤阵列组成。 接收单元还包括测量光束中相应光纤上的光信号强度的多个检测器。 纤维阵列用于检测接收信号相对于接收光纤的位置，并提供反馈以调整光束的取向以优化接收的信号强度。 当接收到的信号与接收光纤之间发生不对准时，一些或多个外部光纤会捕获一些入射的接收信号。 然后将每个产生的信号的振幅彼此比较，从而给出驱动光束与接收信号对准的方向。 本发明提供使用信息携带光信号的自动跟踪，而不需要单独的激光。

    Underwater plow apparatus and method
    5.
    发明授权
    Underwater plow apparatus and method 失效
    水下犁设备及方法

    公开(公告)号：US6116818A

    公开(公告)日：2000-09-12

    申请号：US841055

    申请日：1997-04-29

    申请人： James J. Bitetto ,  James Christopher Coyne ,  Frank Dominick Messina ,  Robert D. Smith ,  Gerald E. Tourgee

    发明人： James J. Bitetto ,  James Christopher Coyne ,  Frank Dominick Messina ,  Robert D. Smith ,  Gerald E. Tourgee

    IPC分类号： E02F5/10 ,  F16L1/12

    CPC分类号： E02F5/104 ,  E02F5/102 ,  E02F5/103 ,  E02F5/106 ,  E02F5/107

    摘要： An ocean plow device and accompanying method which incorporate a passive plow blade and a jetter tool working in conjunction with one another to lower drawbar and increase cable deployment speeds. In order to avoid cavitation due to sand dilation, in one embodiment of the plow device, the jetter tool includes nozzles oriented in a downward and backward direction relative to the plow device which creates a flow pattern to turbulently remove surface soil in front of the jetter tool in a rapid manner. The jetter tool is pivotally suspended from a point in front of the passive plow blade, such that the jetter will be free to find its own equilibrium position. That is, the pivotal mounting enables the jetter tool to rotate upward in harder soils and become fully extended in softer soils in order to reach the equilibrium position. The passive plow blade behind the jetter tool provides a constant burial depth for the cable and also provides protection from side loads encountered during deployment. By utilizing the jetter tool, the present invention avoids forces due to the effect of pore water by creating a slurry through the mixing of high flow rate water with sand, and forming a trench in which the passive tool can follow. In one embodiment of the invention the passive plow blade is backward raked so as to be capable of riding up and over the obstacles thereby providing snag clearing and obstacle avoidance features.

    摘要翻译： 一种海犁装置和相关方法，其包括被动犁刀和相连工作的喷射器工具来下拉牵引杆并增加缆线的展开速度。 为了避免由于沙子扩张引起的空化，在犁装置的一个实施例中，喷射器工具包括相对于犁装置向下和向后的方向定向的喷嘴，其产生流动图案以湍流地去除喷射器前面的表面土壤 工具迅速。 喷射器工具从被动犁叶片前方的点枢转地悬挂，使得喷射器将自由地找到其自身的平衡位置。 也就是说，枢转安装使得喷射器工具能够在较硬的土壤中向上旋转，并且在较软的土壤中完全延伸以达到平衡位置。 喷射器工具后面的被动刨刀刀片可为电缆提供恒定的埋置深度，并且还可以防止部署过程中遇到的侧面负载。 通过利用喷射器工具，本发明通过将高流量水与砂混合产生浆料，并形成被动工具可跟随的沟槽，由于孔隙水的作用而避免了力。 在本发明的一个实施例中，无源犁叶片向后倾斜，以便能够爬上和爬过障碍物，从而提供锯齿清除和障碍物避免特征。