-
公开(公告)号：US08570150B1
公开(公告)日：2013-10-29
申请号：US12350074
申请日：2009-01-07
申请人： Doug Bowen , Thomas R. Giallorenzi , Matt Lake , Sam Kingston
发明人： Doug Bowen , Thomas R. Giallorenzi , Matt Lake , Sam Kingston
IPC分类号： G08B25/10
CPC分类号： G01S5/14 , G01S5/0226 , G01S5/06
摘要： A sensing system includes integrated sensor locating capability. Sensors can transmit spread spectrum encoded data pulses which are received at mobile nodes. Based on time of arrival information and known locations of the mobile nodes, locations of the sensors can be determined.
摘要翻译： 感测系统包括集成的传感器定位功能。 传感器可以传输在移动节点处接收的扩频编码数据脉冲。 基于到达时间信息和移动节点的已知位置，可以确定传感器的位置。
-
公开(公告)号：US07861298B1
公开(公告)日：2010-12-28
申请号：US11529791
申请日：2006-09-28
IPC分类号： G06F21/00
CPC分类号： H04L63/1458 , H04B1/708 , H04B1/7105 , H04L1/0045 , H04L1/0072
摘要： A system and method is disclosed for protecting a receiver configured to receive a plurality of contemporaneous spread spectrum signal bursts from a denial of service attack. The method includes the operation of detecting a burst transmission that includes a random burst number. The burst transmission can be analyzed to determine a denial of service statistic based on the random burst number. The burst transmission is processed when the denial of service statistic is within a predetermined threshold.
摘要翻译： 公开了一种用于保护被配置为从拒绝服务攻击接收多个同时代的扩展频谱信号突发的接收机的系统和方法。 该方法包括检测包括随机突发数的突发传输的操作。 可以分析突发传输以基于随机突发数来确定拒绝服务统计。 当拒绝服务统计量在预定阈值内时，处理突发传输。
-
3.发明授权System and method for detecting a presence and frequency offset of a spread spectrum radio frequency signal 有权用于检测扩频射频信号的存在和频率偏移的系统和方法公开(公告)号：US07672415B1
公开(公告)日：2010-03-02
申请号：US11540136
申请日：2006-09-28
IPC分类号： H04L7/00
CPC分类号： H04L7/043
摘要： A system and method for detecting a presence and frequency offset of a spread spectrum radio frequency signal is disclosed. The method comprises receiving the spread spectrum radio signal. The signal can be sampled to form a plurality of signal samples. Each signal sample can be multiplied by a complex conjugate of a proximate signal sample to form a plurality of signal sample pairs. The signal sample pairs can be summed over a predetermined dwell time period to form a data vector having a magnitude and angle offset to enable detection of the signal and to enable a frequency offset between the spread spectrum radio frequency signal and a receiver frequency reference to be determined.
摘要翻译： 公开了一种用于检测扩频射频信号的存在和频率偏移的系统和方法。 该方法包括接收扩频无线电信号。 信号可被采样以形成多个信号采样。 每个信号样本可以乘以邻近信号样本的复共轭以形成多个信号样本对。 信号样本对可以在预定的停留时间周期内相加以形成具有幅度和角度偏移的数据矢量，以使得能够检测信号，并且使得扩频射频信号和接收机频率参考之间的频率偏移能够是 决心。
-
4.发明授权System and method for determining a fine frequency offset of a received signal 有权用于确定接收信号的精细频率偏移的系统和方法公开(公告)号：US07602834B1
公开(公告)日：2009-10-13
申请号：US11540139
申请日：2006-09-28
IPC分类号： H04B1/00
CPC分类号： H04B1/70752 , H04L2027/0065 , H04W24/00
摘要： A system and method for determining a fine frequency offset of a composite code spread spectrum signal is disclosed. The method includes despreading at least one component of the composite spread spectrum signal to form a partially despread composite spread spectrum signal. A set of on-time samples are selected from the signal. The set of on-time samples are rotated by a predetermined frequency amount. The set of rotated samples are placed into a plurality of frequency bins, with each frequency bin representative of a different frequency estimate. An energy for the signal in each frequency bin is determined to find the bin having the greatest energy.
摘要翻译： 公开了一种用于确定复合码扩频信号的精细频率偏移的系统和方法。 该方法包括解扩复合扩频信号的至少一个分量以形成部分解扩复合扩频信号。 从信号中选择一组接通时间样本。 该一组接通时间样品旋转预定频率量。 旋转的样本集合被放置在多个频率仓中，每个频率块表示不同的频率估计。 确定每个频率仓中的信号的能量以找到具有最大能量的仓。
-
-
-
搜索结果
4 条记录 (耗时 0.011 秒)
