Method and system for target positioning and tracking in cooperative relay networks
    91.
    发明授权
    Method and system for target positioning and tracking in cooperative relay networks 有权
    协同中继网络中目标定位和跟踪的方法和系统

    公开(公告)号:US08259699B2

    公开(公告)日:2012-09-04

    申请号:US12351588

    申请日:2009-01-09

    申请人: Zafer Sahinoglu

    发明人: Zafer Sahinoglu

    摘要: A method and system locates a position of a transceiver in a cooperative relay network of nodes. A primary node broadcasts a range request (RREQ) message. A target node, in response to receiving the RREQ message, broadcasts a range reply (RREP) message, wherein the RREP message includes a time difference between receiving the RREQ message and broadcasting the RREP message. A secondary node, in response to receiving the RREQ message and the RREP message, broadcasts a range data (RDAT) message, wherein the RDAT message includes a time difference between receiving the RREQ message and the RREP message. Then, a position solver can determine a location of the target node based on the time differences in the RREP message and the RDAT message.

    摘要翻译: 方法和系统将收发器的位置定位在节点的协作中继网络中。 主节点广播范围请求(RREQ)消息。 响应于接收到RREQ消息,目标节点广播范围应答(RREP)消息,其中RREP消息包括接收RREQ消息和广播RREP消息之间的时间差。 响应于接收到RREQ消息和RREP消息,辅助节点广播范围数据(RDAT)消息,其中RDAT消息包括接收RREQ消息和RREP消息之间的时间差。 然后,位置求解器可以基于RREP消息和RDAT消息中的时间差来确定目标节点的位置。

    Method for detecting targets using space-time adaptive processing and shared knowledge of the environment
    92.
    发明授权
    Method for detecting targets using space-time adaptive processing and shared knowledge of the environment 有权
    使用时空自适应处理和共享环境知识来检测目标的方法

    公开(公告)号:US08138963B1

    公开(公告)日:2012-03-20

    申请号:US12879288

    申请日:2010-09-10

    IPC分类号: G01S13/00 G01S13/08

    CPC分类号: G01S7/292 G01S13/04

    摘要: A method detects a target in a radar signal using space-time adaptive processing. A test statistic is T = max α ⁢ max λ ⁢ ∫ R ⁢ f 1 ⁡ ( x 0 , x 1 , … ⁢ , x K ❘ α , λ , R ) ⁢ p ⁡ ( R ) ⁢ ⁢ ⅆ R max λ ⁢ ∫ R ⁢ f 0 ⁡ ( x 0 , x 1 , … ⁢ , x K ❘ λ , R ) ⁢ p ⁡ ( R ) ⁢ ⁢ ⅆ R , where x0 is a test signal, xk are K training signals, α is an unknown amplitude of a target signal within the test signal, λ is a scaling factor, R is a covariance matrix of the training signals, and a function max returns a maximum values. The test statistic is compared to a threshold to determine whether the target is present, or not.

    摘要翻译: 一种方法使用空时自适应处理来检测雷达信号中的目标。 一个检验统计量是T = maxα⁢最大λ∫∫R f 1⁡(x 0,x 1,...,x K |α,λ,R)p⁡(R) ∫R f 0⁡(x 0,x 1,...,x K |λ,R)p⁡(R)⁢ⅆR,其中x0是测试信号,xk是K个训练信号,α是 在测试信号内的目标信号的未知振幅,λ是比例因子,R是训练信号的协方差矩阵,函数max返回最大值。 将测试统计量与阈值进行比较,以确定目标是否存在。

    Wireless Energy Transfer with Energy Relays
    94.
    发明申请
    Wireless Energy Transfer with Energy Relays 审中-公开
    带能量继电器的无线能量传输

    公开(公告)号:US20110156487A1

    公开(公告)日:2011-06-30

    申请号:US12650221

    申请日:2009-12-30

    IPC分类号: H02J17/00

    摘要: Embodiments of the invention disclose a method and a system configured to transfer energy wirelessly, comprising a source configured to transfer the energy wirelessly to a sink via a coupling of evanescent waves, wherein the source generates an electromagnetic (EM) near-field in response to receiving the energy; and an energy relay arranged such that to increase the coupling between the source and the sink, wherein the source, the sink, and the energy relay are electromagnetic and non-radiative structures.

    摘要翻译: 本发明的实施例公开了一种被配置为无线传输能量的方法和系统,包括被配置为经由ev逝波的耦合将能量无线地传送到宿的源,其中,源产生响应于 接收能量; 以及能量继电器,其布置成使得增加源极和水槽之间的耦合,其中源极,水槽和能量继电器是电磁和非辐射结构。

    Wireless Energy Transfer with Negative Index Material
    95.
    发明申请
    Wireless Energy Transfer with Negative Index Material 审中-公开
    负指数材料的无线能量转移

    公开(公告)号:US20110133567A1

    公开(公告)日:2011-06-09

    申请号:US12630710

    申请日:2009-12-03

    IPC分类号: H01F38/00

    CPC分类号: H02J50/12 B66B7/00 H02J17/00

    摘要: Embodiments of the invention disclose a system configured to exchange energy wirelessly. The system includes a structure configured to exchange the energy wirelessly via a coupling of evanescent waves, wherein the structure is electromagnetic (EM) and non-radiative, and wherein the structure generates an EM near-field in response to receiving the energy; and a negative index material (NIM) arranged within the EM near-field such that the coupling is enhanced.

    摘要翻译: 本发明的实施例公开了一种被配置为无线交换能量的系统。 该系统包括被配置为经由ev逝波的耦合无线地交换能量的结构,其中该结构是电磁(EM)和非辐射的,并且其中该结构响应于接收能量而产生EM近场; 以及布置在EM近场内的负指数材料(NIM),使得耦合被增强。

    Single-pulse and multi-pulse transmitted reference impulse radio systems with energy detecting receivers
    96.
    发明授权
    Single-pulse and multi-pulse transmitted reference impulse radio systems with energy detecting receivers 失效
    具有能量检测接收器的单脉冲和多脉冲发射参考脉冲无线电系统

    公开(公告)号:US07729407B2

    公开(公告)日:2010-06-01

    申请号:US11054318

    申请日:2005-02-10

    IPC分类号: H04B1/00

    摘要: A transmitted reference ultra-wide band communication signal embodied in an electromagnetic wave and configured to communicate a data value includes a first frame having a first reference pulse and a first data pulse. The first reference pulse has a reference polarity and the first data pulse has a data polarity. The first reference pulse is separated from the first reference pulse by a delay time. The reference polarity is set based on a predetermined reference value and a first pseudo-random polarity code sequence, and the data polarity is set based on the data value and a second pseudo-random polarity code sequence. A receiver configured to receive the signal, a transmitter configured to transmit the signal, and a system of transmitters and receivers are also provided.

    摘要翻译: 实现在电磁波中并被配置为传送数据值的传输的参考超宽带通信信号包括具有第一参考脉冲和第一数据脉冲的第一帧。 第一参考脉冲具有参考极性,并且第一数据脉冲具有数据极性。 第一参考脉冲与第一参考脉冲相隔延迟时间。 基于预定的参考值和第一伪随机极性代码序列来设定参考极性,并且基于数据值和第二伪随机极性代码序列来设置数据极性。 还提供了被配置为接收信号的接收机,被配置为发送信号的发射机,以及发射机和接收机系统。

    Hybrid Multiple Access Method and System in Wireless Networks with extended Content Free Access Period
    97.
    发明申请
    Hybrid Multiple Access Method and System in Wireless Networks with extended Content Free Access Period 有权
    无线网络中的混合多址方法和系统,扩展内容自由访问时间

    公开(公告)号:US20090238160A1

    公开(公告)日:2009-09-24

    申请号:US12345211

    申请日:2008-12-29

    IPC分类号: H04W72/04

    摘要: A method for communicating in a network including a coordinator node and a set of leaf nodes transmits periodically, from the coordinator node to the set of leaf nodes, a beacon defining a superframe, wherein the supper frame includes an active period and an inactive period, and wherein the active period includes a first contention access period (CAP-1), a first contention free period (CFP-1), a first group acknowledgement (GACK-1), a second CFP-2, a second GACK-2, and a second CAP-2, and wherein each CFP includes a guaranteed time slot (GTS) assigned to each leaf node. Then, each leaf node transmits to the coordinator node only during the GTS assigned to the leaf node during each CFP.

    摘要翻译: 在包括协调器节点和一组叶节点的网络中进行通信的方法,从协调器节点周期性地发送定义超帧的信标,其中,所述超帧包括活动周期和非活动时段, 并且其中所述活动时段包括第一争用访问时段(CAP-1),第一无争用时段(CFP-1),第一组确认(GACK-1),第二CFP-2,第二GACK-2, 和第二CAP-2,并且其中每个CFP包括分配给每个叶节点的保证时隙(GTS)。 然后,每个叶节点仅在每个CFP期间分配给叶节点的GTS期间传送到协调器节点。

    Method and Apparatus for Filtering Narrow band Interference in a Pulsed Radio Signal
    98.
    发明申请
    Method and Apparatus for Filtering Narrow band Interference in a Pulsed Radio Signal 审中-公开
    用于滤波脉冲无线电信号中的窄带干扰的方法和装置

    公开(公告)号:US20090221256A1

    公开(公告)日:2009-09-03

    申请号:US12038916

    申请日:2008-02-28

    IPC分类号: H04B1/10

    CPC分类号: H04B1/719 H04B1/71637

    摘要: Narrow band interference in a received pulsed radio signal is removed by first shifting the narrow band interference to a lower frequency using a non-linear filter, and the passing the shifted signal through a high pass filter before detecting energy in the pulsed radio signal. The pulsed radio signal can be an ultra-wideband signal, and the non-linear filter can use a Teager-Kaiser energy operator.

    摘要翻译: 首先通过使用非线性滤波器将窄带干扰移位到较低频率,并且在检测脉冲无线电信号中的能量之前通过高通滤波器来消除所接收的脉冲无线电信号中的窄带干扰。 脉冲无线电信号可以是超宽带信号,非线性滤波器可以使用Teager-Kaiser能量算子。

    Impulse radio systems with multiple pulse types
    99.
    发明授权
    Impulse radio systems with multiple pulse types 失效
    具有多种脉冲类型的脉冲无线电系统

    公开(公告)号:US07539267B2

    公开(公告)日:2009-05-26

    申请号:US10923481

    申请日:2004-08-20

    IPC分类号: H04L27/00

    摘要: A method signals in an ultra-wide bandwidth network. A data symbol is generated. A set of reference pulses is transmitted for the data symbol. Each reference pulse is of a different type. One data pulse is also transmitted for each reference pulse. A type of each data pulse is identical to the type of the corresponding reference pulse.

    摘要翻译: 一种在超宽带宽网络中的信号。 生成数据符号。 为数据符号发送一组参考脉冲。 每个参考脉冲是不同类型的。 每个参考脉冲也发送一个数据脉冲。 每种数据脉冲的类型与相应参考脉冲的类型相同。

    Energy threshold selection for UWB TOA estimation
    100.
    发明授权
    Energy threshold selection for UWB TOA estimation 失效
    UWB TOA估计的能量阈值选择

    公开(公告)号:US07526048B2

    公开(公告)日:2009-04-28

    申请号:US11202006

    申请日:2005-08-11

    IPC分类号: H04L27/00

    CPC分类号: G01S5/0221 G01S7/285

    摘要: A method for estimation a time-of-arrival of a radio signal is provided. The signal is an ultra-wideband (UWB) signal. The method uses kurtosis of the received signal to estimate an energy threshold of the signal. The energy threshold can be used to determine a time-of-arrival of the signal.

    摘要翻译: 提供了一种用于估计无线电信号的到达时间的方法。 该信号是超宽带(UWB)信号。 该方法使用接收信号的峰度来估计信号的能量阈值。 能量阈值可用于确定信号的到达时间。