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1. 发明授权

US06954482B2 Soft-decision trellis-coded differential frequency-hopped spread spectrum (DFHSS) 有权
标题翻译：软决策网格编码差分跳频扩频（DFHSS）
公开(公告)号：US06954482B2
公开(公告)日：2005-10-11
申请号：US10422340
申请日：2003-04-24
申请人： Diane G. Mills , Cory S. Myers , Geoffrey S. Edelson , David L. Herrick
发明人： Diane G. Mills , Cory S. Myers , Geoffrey S. Edelson , David L. Herrick
IPC分类号： H04B1/713 , H04L1/00 , H04L27/30
CPC分类号： H04L1/006 , H04B1/713 , H04B2001/7152 , H04L1/0054
摘要： A method and system begin at a random node of a trellis model having a set of at least two axes, wherein one axis corresponds to time and a second axis corresponds to frequency, a set of M states, corresponding to a set of all possible frequencies that may be transmitted by the system, and branches leaving each state, that terminate at allowable transmit frequencies for a next frequency hop. The number of branches leaving each state is dependent on the number of encoded bits per hop. Next, B bits of data are passed to a buffer, where B is the number of bits that will be transmitted per frequency hop. The method and system then combine the B bits of data with information for previously selected frequencies to select a current frequency, transmit the selected frequency, and feedback the currently selected frequency information to be used as previously selected frequency information when selecting a next frequency.
摘要翻译：一种方法和系统从具有一组至少两个轴的网格模型的随机节点开始，其中一个轴对应于时间，第二轴对应于频率，一组M个状态，对应于一组所有可能的频率可以由系统发送，并且离开每个状态的分支，以可允许的发射频率终止下一个跳频。离开每个状态的分支数取决于每跳的编码比特数。接下来，将B位数据传送到缓冲器，其中B是每跳频将被发送的位数。该方法和系统然后将B位数据与先前选择的频率的信息组合以选择当前频率，发送所选择的频率，并且在选择下一个频率时反馈当前选择的频率信息以用作先前选择的频率信息。

2. 发明授权

US5512908A Apparatus and method for locating cellular telephones 失效
标题翻译：用于定位蜂窝电话的装置和方法
公开(公告)号：US5512908A
公开(公告)日：1996-04-30
申请号：US272725
申请日：1994-07-08
申请人： David L. Herrick
发明人： David L. Herrick
IPC分类号： G01S5/04 , G01S5/06 , G01S5/12 , H04W64/00 , G01S1/24 , H04M11/00
CPC分类号： H04W64/00 , G01S5/06 , G01S5/12 , G01S5/04
摘要： A method for determining the time difference of arrival, tdoa, of signals from a cellular telephone, includes determining tdoas for a plurality of channels, averaging the tdoas from the channels, subtracting the average tdoa from the individual channel tdoas to determine residual channel tdoas and determining an overall residual tdoa from the residual channel tdoas. An apparatus and method for collecting cell phone transmission signals for performing tdoa calculations, includes receiving, digitizing and temporarily storing wideband transmission signals while monitoring a known reverse control channel for a predetermined cell phone number to be located, and permanently storing the delayed reverse control channel signal once the predetermined number is identified.
摘要翻译：用于确定来自蜂窝电话的信号的到达时间差tdoa的方法包括确定多个信道的tdoas，从信道平均tdoas，从各个信道tdoas中减去平均tdoa以确定剩余信道tdoas，从残余信道tdoas确定总剩余tdoa。一种用于收集用于执行tdoa计算的手机传输信号的装置和方法，包括在监视要定位的预定蜂窝电话号码的已知反向控制信道的同时接收，数字化和临时存储宽带传输信号，并且永久地存储延迟的反向控制信道一旦识别出预定数量，就发出信号。

3. 发明授权

US5440636A Apparatus and method for processing of frequency hopping communications 失效
标题翻译：跳频通信处理装置及方法
公开(公告)号：US5440636A
公开(公告)日：1995-08-08
申请号：US19452
申请日：1987-02-27
申请人： David L. Herrick
发明人： David L. Herrick
IPC分类号： H04B1/713 , H04K1/10 , H04L27/10
CPC分类号： H04B1/713
摘要： The present invention relates to signal processors and processing, and more particularly to apparatus and method for sensing, detection and/or demodulation of frequency hopping signals.
摘要翻译：本发明涉及信号处理器和处理，更具体地涉及用于感测，检测和/或解调跳频信号的装置和方法。

4. 发明授权

US07598910B2 Direction finding and mapping in multipath environments 有权
标题翻译：多径环境中的方向查找和映射
公开(公告)号：US07598910B2
公开(公告)日：2009-10-06
申请号：US11480084
申请日：2006-06-30
申请人： David L. Herrick
发明人： David L. Herrick
IPC分类号： G01S5/02 , H01Q3/00 , G01S13/00 , G01S7/40
CPC分类号： G01S3/46 , G01S3/10 , G01S5/0215 , G01S5/04
摘要： Determining the direction of a direct arrival path between a receiver and a transmitter in a multipath environment by determining a transmitter heading relative to the receiver as proportional to a frequency offset of the direct path signal component relative to a multipath pedestal, an absolute velocity of the transmitter as proportional to a width of the multipath pedestal, a relative velocity between the transmitter and the receiver as proportional to a magnitude and a direction of doppler shift of the direct arrival component of the received signal relative to the doppler pedestal, and an amplitude of the multipath pedestal as proportional to a number and magnitude of scatterers in the multipath environment. The method is applied for continuous wave and modulated signals, for stationary and moving transmitters and for tracking and mapping transmitter paths.
摘要翻译：通过确定相对于接收机的发射机标题与直接路径信号分量相对于多路径基座的频率偏移成比例来确定在多径环境中的接收机和发射机之间的直接到达路径的方向，绝对速度发射机与多径基座的宽度成比例，发射机和接收机之间的相对速度与接收信号相对于多普勒基座的直接到达分量的多普勒频移的幅度和方向成比例，并且幅度多径基座与多径环境中散射体的数量和数量成比例。该方法适用于连续波和调制信号，用于固定和移动发射机，并用于跟踪和映射发射机路径。

5. 发明授权

US4709239A Dipatch antenna 失效
标题翻译：双面天线
公开(公告)号：US4709239A
公开(公告)日：1987-11-24
申请号：US773699
申请日：1985-09-09
申请人： David L. Herrick
发明人： David L. Herrick
IPC分类号： H01Q1/28 , H01Q9/04 , H01Q1/38
CPC分类号： H01Q1/282 , H01Q9/0442
摘要： A vertically polarized omnidirectional antenna adapted for use in airborne, Very High Frequency (VHF) applications is disclosed. The antenna is configured as a conductive patch spaced over its virtual image. The addition of a number of switching devices allows operation over a five-to-one bandwidth while maintaining a two-to-one Voltage Standing Wave Ratio.
摘要翻译：公开了一种适用于机载，超高频（VHF）应用的垂直极化全向天线。天线被配置为在其虚拟图像上间隔开的导电贴片。多个开关器件的添加允许在五到一个带宽上工作，同时保持两对一的电压驻波比。

6. 发明授权

US08064737B2 Spatial bandwidth imaging of structural interiors 有权
标题翻译：结构内部空间带宽成像
公开(公告)号：US08064737B2
公开(公告)日：2011-11-22
申请号：US12046847
申请日：2008-03-12
申请人： David L. Herrick
发明人： David L. Herrick
IPC分类号： G06K9/00
CPC分类号： G01S13/888 , G01S13/90
摘要： Spatial bandwidth imaging of the interior spaces and elements of a structure by transmission of low frequency, continuous-wave, narrow band signal or signals through the structure, measurement of the electric and magnetic components of the received signal received by narrow band Doppler or focused synthetic aperture methods over a range of signal paths extending from the transmitter and through the structure, and imaging of the effects of the interior space on the electric and magnetic components of the received signal.
摘要翻译：通过传输低频，连续波，窄带信号或通过结构的信号，内部空间和结构元件的空间带宽成像，窄带多普勒或聚焦合成接收的接收信号的电和磁分量的测量在从发射器和结构延伸的信号路径的范围内的孔径方法以及内部空间对接收信号的电和磁分量的影响的成像。

7. 发明授权

US06670920B1 System and method for single platform, synthetic aperture geo-location of emitters 失效
标题翻译：单一平台的系统和方法，发射器的合成孔径地理位置
公开(公告)号：US06670920B1
公开(公告)日：2003-12-30
申请号：US10219103
申请日：2002-08-15
申请人： David L. Herrick
发明人： David L. Herrick
IPC分类号： G01S316
CPC分类号： G01S13/9035 , G01S3/48 , G01S5/04 , G01S5/06
摘要： The determination of the geographical location of a signal emitter by the coherent, time integrated measurement of received signal wavefront phase differences through a synthetic aperture and the reconstruction of the wavefront of the received signal. The location of an emitter is determined by coherently measuring the phase gradient of an emitted signal at measurement points across a measurement aperture. Each measured phase gradient is integrated to determine a vector having a direction from the measurement point to the signal emitter and an amplitude proportional to the received signal. A figure of merit is determined for each possible location of the signal emitter by integrating each vector with respect to a propagation path between the measurement point of the vector and the possible location of the signal emitter, and the location of the signal emitter is determined as the possible location of the signal emitter having the highest figure of merit. The measurement aperture is generated by motion of a receiving aperture along the path and the receiving aperture is generated as by synthetic aperture methods. The receiving aperture may be mounted on an airborne platform and a positional towed body.
摘要翻译：通过合成孔径对接收信号波前相位差进行相干，时间积分测量，并重建接收信号的波前，来确定信号发射器的地理位置。发射器的位置通过相干测量穿过测量孔的测量点处的发射信号的相位梯度来确定。每个测量的相位梯度被积分以确定具有从测量点到信号发射器的方向的矢量和与接收信号成比例的振幅。通过将矢量相对于矢量的测量点与信号发射器的可能位置之间的传播路径进行积分来确定信号发射器的每个可能位置的品质因数，并且将信号发射器的位置确定为具有最高品质因数的信号发射器的可能位置。通过沿着路径的接收孔的运动产生测量孔径，并且通过合成孔径方法产生接收孔。接收孔可以安装在机载平台和位置牵引体上。

8. 发明授权

US5625364A Apparatus and method for finding a signal emission source 失效
标题翻译：用于寻找信号发射源的装置和方法
公开(公告)号：US5625364A
公开(公告)日：1997-04-29
申请号：US272724
申请日：1994-07-08
申请人： David L. Herrick , William F. Matthews, III
发明人： David L. Herrick , William F. Matthews, III
IPC分类号： G01S5/04 , G01S5/06 , G01S5/12 , H04W64/00 , G01S13/00
CPC分类号： H04W64/00 , G01S5/06 , G01S5/12 , G01S5/04
摘要： An apparatus and method are described for direction finding the source of emf emissions including a monotone signal by detecting the phase changes of the monotone signal during movement relative to the source. A software embodiment measures the amount of phase change.
摘要翻译：描述了一种装置和方法，用于通过在相对于源运动期间检测单调信号的相位变化来查找包括单调信号的电动势发射源。软件实施例测量相变量。

9. 发明授权

US06813359B2 Apparatus and method for minimizing multipath interference 有权
标题翻译：用于最小化多路径干扰的装置和方法
公开(公告)号：US06813359B2
公开(公告)日：2004-11-02
申请号：US10135208
申请日：2002-04-29
申请人： David L. Herrick
发明人： David L. Herrick
IPC分类号： H04H500
CPC分类号： H04B1/1661 , H04B1/1081 , H04B7/005
摘要： A method and apparatus for minimizing multipath interference for commercial FM signals which use SCA secondary signals in QAM format that includes tracking the time series of phase measurements of a received stereo pilot signal for determining the proper phase reference for demodulation of QAM signals at the center of the time series. Phase measurements of the pilot signal are tracked over a predetermined tracking period. The phase measurement is used to support demodulation of the QAM signal. The SCA secondary signals in QAM format transmitted on commercial FM have minimal multipath interference and Doppler interference by movement of transmitter and receiver (vehicular).
摘要翻译：一种用于最小化商用FM信号的多径干扰的方法和装置，其使用QAM格式的SCA辅助信号，其包括跟踪接收到的立体声导频信号的相位测量的时间序列，以确定用于解调QAM信号中心处的QAM信号的适当相位参考时间序列。在预定的跟踪周期内跟踪导频信号的相位测量。相位测量用于支持QAM信号的解调。在商业FM上发送的QAM格式的SCA二次信号通过发射机和接收机（车辆）的移动具有最小的多径干扰和多普勒干扰。

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