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    • 1. 发明申请
    • ANNULAR VEHICLE WITH DIPOLE ANTENNA
    • 带有天线的环形车辆
    • US20140292592A1
    • 2014-10-02
    • US14360150
    • 2012-11-22
    • GO SCIENCE GROUP LTD.
    • Harry George Dennis GoslingArran James Holloway
    • H01Q1/04H01Q1/34H01Q9/16
    • H01Q1/04B63G8/001H01Q1/34H01Q9/16H01Q21/26H01Q21/28
    • An annular vehicle having a body which defines a body axis and appears substantially annular when viewed along the body axis. The interior of the annulus defines a duct which is open at both ends. The vehicle includes an electric field (EF) coupled dipole antenna arrangement for electro-magnetic communications, which includes at least one dipole antenna. The vehicle is used as a node in an underwater communications system for communicating with other node(s) using their EF coupled dipole antenna arrangements. The electric field coupled dipole antenna arrangement can provide communications with lower latency than systems employing acoustic communications. The annular body provides good separation for electrodes of the EF coupled dipole antenna arrangement disposed around the body.
    • 一种环形车辆,其具有限定主体轴线并且当沿着身体轴线观察时呈现大致环形的主体。 环的内部限定了在两端敞开的管道。 车辆包括用于电磁通信的电场(EF)耦合偶极天线装置,其包括至少一个偶极子天线。 车辆用作水下通信系统中的节点,用于使用其EF耦合偶极天线布置与其他节点进行通信。 与使用声学通信的系统相比,电场耦合偶极天线布置可以提供具有较低延迟的通信。 环形体为设置在身体周围的EF耦合偶极天线装置的电极提供良好的分离。
    • 2. 发明授权
    • Communication with an underwater vehicle
    • 与水下飞机通讯
    • US09432129B2
    • 2016-08-30
    • US14380824
    • 2013-02-28
    • GO SCIENCE GROUP LTD
    • Harry George Dennis Gosling
    • H04B11/00G01S19/14G01S5/00G01S5/30H04B13/02B63G8/08B63G8/00H04L25/49
    • H04B11/00B63G8/001B63G8/08G01S5/0009G01S5/30G01S19/14H04B13/02H04L25/4902
    • A method of communicating with an underwater vehicle comprising a propulsion system for propelling the vehicle through the water. A series of data sets are encoded and transmitted to the underwater vehicle in a series of signal bursts, and decoded at the underwater vehicle. The propulsion system is operated in a series of thrust pulses separated by drift periods such that the propulsion system operates at a relatively high rate during the thrust pulses and at a relatively low (or zero) rate during the drift periods. The drift periods are timed such that each signal burst arrives at the underwater vehicle during a drift period and not during a thrust pulse. The method may be performed with a single vehicle or a plurality of underwater vehicles. The encoded data signals are broadcast simultaneously to the underwater vehicles in the series of signal bursts.
    • 一种与水下航行器通信的方法,包括用于推动车辆通过水的推进系统。 一系列数据集被编码并以一系列信号突发传送到水下航行器,并在水下航行器处解码。 推进系统以漂移周期分开的一系列推力脉冲操作,使得推进系统在推力脉冲期间以相对高的速率运行,并且在漂移周期期间以相对较低(或零)的速率运行。 漂移周期被定时,使得每个信号脉冲在漂移期间到达水下航行器,而不是在推力脉冲期间到达。 该方法可以用单个车辆或多个水下航行器进行。 编码数据信号在一系列信号脉冲串中同时广播到水下航行器。
    • 3. 发明授权
    • Determining position of underwater node
    • 确定水下节点的位置
    • US09170319B2
    • 2015-10-27
    • US14381479
    • 2013-02-28
    • GO SCIENCE GROUP LTD
    • Harry George Dennis GoslingRoman Lloyd KingslandArran James Holloway
    • G01S5/30G01S5/00
    • G01S5/30G01S5/0009
    • A method of determining the position of an underwater node. The positions of three or more transmitters are determined. Each transmitter transmits at least four pulses, wherein a time difference between each pulse and a previous one of the pulses is proportional to a respective co-ordinate of the position of the transmitter. The pulses are received at the underwater node and decoded by measuring the delays between them, thereby determining the co-ordinates of the transmitters. The range of each transmitter relative to the underwater node is also determined. Finally the position of the underwater node is determined in accordance with the co-ordinates and ranges. Any errors in the measurements of the delays between the pulses only translate into small errors in the determined position because of the proportionality between the delays and the coordinates. Therefore if there is a gradual decrease of signal-to-noise ratio then the accuracy of the position estimate also degrades gradually. Also, the use of pulse position modulation provides a low computation overhead in decoding and encoding.
    • 一种确定水下节点位置的方法。 确定三个或更多个发射器的位置。 每个发射机发送至少四个脉冲,其中每个脉冲和前一个脉冲之间的时间差与发射机的位置的相应坐标成正比。 在水下节点处接收脉冲并通过测量它们之间的延迟进行解码,从而确定发射机的坐标。 每个发射机相对于水下节点的范围也是确定的。 最后,根据坐标和范围确定水下节点的位置。 由于延迟和坐标之间的比例关系,在脉冲之间的延迟测量中的任何误差只能转化为确定位置的小误差。 因此,如果信噪比逐渐降低,则位置估计的精度也逐渐降低。 此外,使用脉冲位置调制在解码和编码中提供了低的计算开销。