公开(公告)号：US5999561A

公开(公告)日：1999-12-07

申请号：US929891

申请日：1997-09-15

申请人： Gary A. Naden ,  Robert E. Rouquette ,  H. Britton Sanderford, Jr. ,  Dale E. Reiser ,  Charles A. Hwang ,  Marc L. Reed

发明人： Gary A. Naden ,  Robert E. Rouquette ,  H. Britton Sanderford, Jr. ,  Dale E. Reiser ,  Charles A. Hwang ,  Marc L. Reed

IPC分类号： H04B1/707

CPC分类号： H04B1/707

摘要： A method, apparatus, computer-based product and system employs a digital receiver (or transceiver) to receive, digitize and process a direct sequence spread spectrum signal using efficient, low-cost digital signal processing components. A radio front end portion of the receiver receives and digitizes the signal, and a digital signal processing portion downconverts and despreads the signal by applying a pseudorandom noise (PN) code, used at a transmitter to spread a data signal contained in the direct sequence spread spectrum signal, to the received signal. In order to initially align, and maintain alignment of, the PN code with the direct sequence spread spectrum signal, a timing and state control mechanism is included that provides time reference correction information to the signal processing components of the receiver. This time reference correction information allows the receiver to be compatible with transmitters using inaccurate frequency references which impart a significant frequency ambiguity in the received signal. Additional features include computer-based synchronization methods and mechanisms suitable for use for low performance digital signal processors and employ power management mechanisms that enable long-term operation using battery power. The power management mechanisms enable the receiver to operate in a network setting, over the course of multiple years off battery power, with similar receivers, transmitters and transceiver that communicate with one another using direct sequence spread spectrum signals.

摘要翻译： 一种方法，装置，基于计算机的产品和系统使用数字接收机（或收发器）来使用有效的低成本数字信号处理组件来接收，数字化和处理直接序列扩频信号。 接收机的无线电前端部分接收并数字化该信号，并且数字信号处理部分通过应用在发射机处使用的伪随机噪声（PN）码来对信号进行下变频和解扩，以扩展包含在直接序列扩展中的数据信号 频谱信号，到接收信号。 为了初始对准和保持PN码与直接序列扩频信号的对准，包括向接收机的信号处理部件提供时间基准校正信息的定时和状态控制机制。 该时间参考校正信息允许接收机与使用不准确的频率参考的发射机兼容，这在接收信号中赋予显着的频率模糊。 附加功能包括适用于低性能数字信号处理器的基于计算机的同步方法和机制，并采用使用电池电源进行长期运行的电源管理机制。 功率管理机制使得接收机能够使用类似的接收机，发射器和收发器在多年的关闭电池电力的过程中在使用直接序列扩频信号彼此通信的网络设置中进行操作。

公开(公告)号：US07477694B2

公开(公告)日：2009-01-13

申请号：US10662530

申请日：2003-09-16

申请人： H. Britton Sanderford, Jr. ,  Robert E. Rouquette ,  Gary A. Naden ,  Marc L. Reed ,  Gordon J. Boudreaux ,  Michael R. Brown

发明人： H. Britton Sanderford, Jr. ,  Robert E. Rouquette ,  Gary A. Naden ,  Marc L. Reed ,  Gordon J. Boudreaux ,  Michael R. Brown

IPC分类号： H04L5/12 ,  H04Q7/30

CPC分类号： H03L7/08 ,  H03B21/00 ,  H04L5/06 ,  H04L5/16 ,  H04L25/061 ,  H04L25/4902 ,  H04L25/4921 ,  H04L27/12 ,  H04L27/2331 ,  H04L27/32 ,  H04L27/34 ,  H04L27/3433 ,  H04L27/3483 ,  H04L27/364 ,  H04L27/38 ,  H04L27/3845 ,  H04W36/08 ,  H04W72/0426

摘要： A cellular wireless packet data communication system containing transmit-only endpoint devices which transmit to receive-only base stations. The system is configured to allow for large area coverage (e.g., a metropolitan area) with far fewer number base stations than are required with conventional two-way cellular systems. The base station coverage areas are configured to overlap, allowing for reception of packets at multiple base stations. A data concentrator resolves redundantly received messages. The network is configurable as a WAN, a LAN, or a combination of the two. Novel modulation techniques (e.g., a 16QAM submodulation together with a 7FSK modulation) are used such that low cost components can be used in the transmitters and receivers while achieving outstanding probability of success performance. The endpoint devices are battery operated and accordingly, are designed for low power consumption and multi-year battery life. The system is used in a variety of applications including remote monitoring and mobile communications.

摘要翻译： 一种蜂窝式无线分组数据通信系统，其包含向仅接收基站发送的仅发送端点设备。 该系统被配置为允许具有比常规双向蜂窝系统所需的数量少的基站的大面积覆盖（例如，大都市区域）。 基站覆盖区被配置为重叠，允许在多个基站处接收分组。 数据集中器解决冗余接收的消息。 该网络可配置为WAN，LAN或两者的组合。 使用新的调制技术（例如，16QAM子调制以及7FSK调制），使得可以在发射机和接收机中使用低成本组件，同时实现成功性能的突出概率。 端点设备是电池供电的，因此设计用于低功耗和多年电池寿命。 该系统用于各种应用，包括远程监控和移动通信。

公开(公告)号：US20090103509A1

公开(公告)日：2009-04-23

申请号：US12340272

申请日：2008-12-19

申请人： H. Britton Sanderford, JR. ,  Robert E. Rouquette ,  Gary A. Naden ,  Marc L. Reed ,  Gordon J. Boudreaux ,  Michael R. Brown

发明人： H. Britton Sanderford, JR. ,  Robert E. Rouquette ,  Gary A. Naden ,  Marc L. Reed ,  Gordon J. Boudreaux ,  Michael R. Brown

IPC分类号： H04J1/00

CPC分类号： H03L7/08 ,  H03B21/00 ,  H04L5/06 ,  H04L5/16 ,  H04L25/061 ,  H04L25/4902 ,  H04L25/4921 ,  H04L27/12 ,  H04L27/2331 ,  H04L27/32 ,  H04L27/34 ,  H04L27/3433 ,  H04L27/3483 ,  H04L27/364 ,  H04L27/38 ,  H04L27/3845 ,  H04W36/08 ,  H04W72/0426

摘要： A cellular wireless packet data communication system containing transmit-only endpoint devices which transmit to receive-only base stations. The system is configured to allow for large area coverage (e.g., a metropolitan area) with far fewer number base stations than are required with conventional two-way cellular systems. The base station coverage areas are configured to overlap, allowing for reception of packets at multiple base stations. A data concentrator resolves redundantly received messages. The network is configurable as a WAN, a LAN, or a combination of the two. Novel modulation techniques (e.g., a 16QAM submodulation together with a 7FSK modulation) are used such that low cost components can be used in the transmitters and receivers while achieving outstanding probability of success performance. The endpoint devices are battery operated and accordingly, are designed for low power consumption and multi-year battery life. The system is used in a variety of applications including remote monitoring and mobile communications.

摘要翻译： 一种蜂窝式无线分组数据通信系统，其包含向仅接收基站发送的仅发送端点设备。 该系统被配置为允许具有比常规双向蜂窝系统所需的数量少的基站的大面积覆盖（例如，大都市区域）。 基站覆盖区被配置为重叠，允许在多个基站处接收分组。 数据集中器解决冗余接收的消息。 该网络可配置为WAN，LAN或两者的组合。 使用新的调制技术（例如，16QAM子调制以及7FSK调制），使得可以在发射机和接收机中使用低成本组件，同时实现成功性能的突出概率。 端点设备是电池供电的，因此设计用于低功耗和多年电池寿命。 该系统用于各种应用，包括远程监控和移动通信。

公开(公告)号：US08374228B2

公开(公告)日：2013-02-12

申请号：US12340272

申请日：2008-12-19

申请人： H. Britton Sanderford, Jr. ,  Robert E. Rouquette ,  Gary A. Naden ,  Marc L. Reed ,  Gordon J. Boudreaux ,  Michael R. Brown

发明人： H. Britton Sanderford, Jr. ,  Robert E. Rouquette ,  Gary A. Naden ,  Marc L. Reed ,  Gordon J. Boudreaux ,  Michael R. Brown

IPC分类号： H04B17/00 ,  H04W24/00

CPC分类号： H03L7/08 ,  H03B21/00 ,  H04L5/06 ,  H04L5/16 ,  H04L25/061 ,  H04L25/4902 ,  H04L25/4921 ,  H04L27/12 ,  H04L27/2331 ,  H04L27/32 ,  H04L27/34 ,  H04L27/3433 ,  H04L27/3483 ,  H04L27/364 ,  H04L27/38 ,  H04L27/3845 ,  H04W36/08 ,  H04W72/0426

摘要： A remote endpoint monitor device includes a remote endpoint device including a meter, a position locator, a frequency selector, and a communication unit. The meter is configured to measure a service parameter to provide a measured service parameter value. The position locator is configured to determine a position of the remote endpoint device. The frequency selector is configured to select a transmission frequency device based on the determined position. The transmitter is configured to transmit service information data including the service parameter value at the transmission frequency selected by the frequency selector. A method of a remote endpoint monitor device includes measuring a service parameter, determining a position of the remote endpoint device, selecting a transmission frequency of the remote end point device, and transmitting service information data at the transmission frequency. Thus, the remote endpoint monitor device is capable of handling an automatic frequency switchover without direction provided externally.

摘要翻译： 远程端点监视器设备包括远程端点设备，其包括仪表，位置定位器，频率选择器和通信单元。 仪表被配置为测量服务参数以提供测量的服务参数值。 位置定位器被配置为确定远程端点设备的位置。 频率选择器被配置为基于所确定的位置来选择发送频率设备。 发送器被配置为发送包括由频率选择器选择的发送频率的服务参数值的服务信息数据。 一种远程端点监控装置的方法包括：测量服务参数，确定远程端点设备的位置，选择远端终端设备的传输频率，以及以传输频率发送服务信息数据。 因此，远程端点监视设备能够处理自动频率切换，而无需外部提供方向。

公开(公告)号：US07705777B2

公开(公告)日：2010-04-27

申请号：US11562716

申请日：2006-11-22

申请人： H. Britton Sanderford, Jr. ,  Robert E. Rouquette ,  Gary A. Naden ,  Marc L. Read ,  Gordon J. Boudreaux ,  Michael R. Brown

发明人： H. Britton Sanderford, Jr. ,  Robert E. Rouquette ,  Gary A. Naden ,  Marc L. Read ,  Gordon J. Boudreaux ,  Michael R. Brown

IPC分类号： G01S1/00 ,  H04B7/185

CPC分类号： H03L7/08 ,  H03B21/00 ,  H04L5/06 ,  H04L5/16 ,  H04L25/061 ,  H04L25/4902 ,  H04L25/4921 ,  H04L27/12 ,  H04L27/2331 ,  H04L27/32 ,  H04L27/34 ,  H04L27/3433 ,  H04L27/3483 ,  H04L27/364 ,  H04L27/38 ,  H04L27/3845 ,  H04W36/08 ,  H04W72/0426

摘要： A mobile multifrequency transmitter includes a self-locator, a frequency selector, and a communication unit. The self-locator is configured to determine a current self location without transmitting an outgoing signal, and to provide the self location to the multifrequency transmitter. The frequency selector is configured to select a usable frequency based on the current self location. The communication unit is configured to transmit on said selected usable frequency. A mobile communication method includes the steps of obtaining a current self location from a self-locator without transmitting an outgoing signal, looking up in a database an allowable frequency band corresponding to the current self location, and transmitting on the allowable frequency band. Thus, the mobile multi-frequency transmitter is capable of handling an automatic frequency switchover without the need for higher level cellular direction.

摘要翻译： 移动多频发射机包括自定位器，频率选择器和通信单元。 自定位器被配置为确定当前的自身位置而不发送输出信号，并且向多频发射器提供自身位置。 频率选择器被配置为基于当前自身位置来选择可用频率。 通信单元被配置为在所述选择的可用频率上进行发送。 一种移动通信方法包括以下步骤：从自定位器获取当前自身位置，而不发送输出信号，在数据库中查找与当前自身位置相对应的可允许频带，以及在允许频带上进行发送。 因此，移动多频发射机能够处理自动频率切换，而不需要更高级的蜂窝方向。

公开(公告)号：US06639939B1

公开(公告)日：2003-10-28

申请号：US09359441

申请日：1999-07-22

申请人： Gary A. Naden ,  Robert E. Rouquette ,  Dale E. Reiser

发明人： Gary A. Naden ,  Robert E. Rouquette ,  Dale E. Reiser

IPC分类号： H04B1707

CPC分类号： H04B1/707

摘要： A method, apparatus, computer-based product and system employs a digital receiver (or transceiver) to receive, digitize and process a direct sequence spread spectrum signal using efficient, low-cost digital signal processing components. A radio front end portion of the receiver receives and digitizes the signal, and a digital signal processing portion downconverts and despreads the signal by applying a pseudorandom noise (PN) code, used at a transmitter to spread a data signal contained in the direct sequence spread spectrum signal, to the received signal. In order to initially align, and maintain alignment of, the PN code with the direct sequence spread spectrum signal, a timing and state control mechanism is included that provides time reference correction information to the signal processing components of the receiver. This time reference correction information allows the receiver to be compatible with transmitters using inaccurate frequency references which impart a significant frequency ambiguity in the received signal. Additional features include computer-based synchronization methods and mechanisms suitable for use for low performance digital signal processors and employ power management mechanisms that enable long-term operation using battery power. The power management mechanisms enable the receiver to operate in a network setting, over the course of multiple years off battery power, with similar receivers, transmitters and transceiver that communicate with one another using direct sequence spread spectrum signals.

摘要翻译： 一种方法，装置，基于计算机的产品和系统使用数字接收机（或收发器）来使用有效的低成本数字信号处理组件来接收，数字化和处理直接序列扩频信号。 接收机的无线电前端部分接收并数字化该信号，并且数字信号处理部分通过应用在发射机处使用的伪随机噪声（PN）码来对信号进行下变频和解扩，以扩展包含在直接序列扩展中的数据信号 频谱信号，到接收信号。 为了初始对准和保持PN码与直接序列扩频信号的对准，包括向接收机的信号处理部件提供时间基准校正信息的定时和状态控制机制。 该时间参考校正信息允许接收机与使用不准确的频率参考的发射机兼容，这在接收信号中赋予显着的频率模糊。 附加功能包括适用于低性能数字信号处理器的基于计算机的同步方法和机制，并采用使用电池电源进行长期运行的电源管理机制。 功率管理机制使得接收机能够使用类似的接收机，发射器和收发器在多年的关闭电池电力的过程中在使用直接序列扩频信号彼此通信的网络设置中进行操作。

公开(公告)号：US5920589A

公开(公告)日：1999-07-06

申请号：US559913

申请日：1995-11-17

申请人： Robert E. Rouquette ,  Gary A. Naden ,  H. Britton Sanderford

发明人： Robert E. Rouquette ,  Gary A. Naden ,  H. Britton Sanderford

IPC分类号： H04B1/707

CPC分类号： H04B1/70752 ,  H04B1/707 ,  H04B1/70755 ,  H04B1/70775 ,  H04B1/708 ,  H04B1/7097 ,  H04B1/7101

摘要： A direct sequence spread spectrum (DSSS) DSP implementation technique utilizing a unique combination of multiple filters, transforms, despreading algorithm and spectral compression, all in a single coefficient set, providing a highly efficient system requiring relatively nominal computational hardware and software requirements. Reallocatable computational resources allow for frequency uncertainty in the transmitter, without the typical excessive noise bandwidth penalties. The present system further contemplates a unique energy detection algorithm for discerning spread spectrum while in the search mode, utilizing several discrete sampling data sets to increase signal strength, reducing noise, while changing the relative phase of the received chipping code with respect to the received signal. The spectral compression of the spreading sequence is achieved by representing the PRC as an array of two, complimenting fractional coefficients. The PRC code is filtered to achieve the required spectral compression characteristics, resulting in minimal despreading loss, while providing interference rejection of CW signals greater than 1.5 MHz from the center IF frequency.

摘要翻译： 直接序列扩频（DSSS）DSP实现技术利用多个滤波器，变换，解扩算法和频谱压缩的独特组合，全部在单个系数集中，提供需要相对标称计算硬件和软件要求的高效系统。 可重新定位的计算资源允许发射机中的频率不确定性，而不会产生典型的过多的噪声带宽损失。 本系统进一步考虑了一种独特的能量检测算法，用于在搜索模式下识别扩展频谱，利用若干离散采样数据集增加信号强度，降低噪声，同时改变接收到的切片码相对于接收信号的相对相位 。 扩展序列的频谱压缩通过将PRC表示为两个相加的分数系数的阵列来实现。 对PRC码进行滤波以实现所需的频谱压缩特性，从而产生最小的去扩展损耗，同时从中心IF频率提供大于1.5MHz的CW信号的干扰抑制。

公开(公告)号：US20080097731A1

公开(公告)日：2008-04-24

申请号：US11583417

申请日：2006-10-18

申请人： Troy E. Lanes ,  Jonathan P. Moberley ,  David A. Ronsen ,  Gary A. Naden

发明人： Troy E. Lanes ,  Jonathan P. Moberley ,  David A. Ronsen ,  Gary A. Naden

IPC分类号： G06F17/10

CPC分类号： G06Q10/087

摘要： A system and method for graphically displaying information concerning geographically dispersed assets. The system comprises a computer program that associates map and/or geographical data with a physical asset; an icon or other graphical representation of each dispersed asset; and an automatic grouping function that combines at least two of the assets into a single icon or other graphical representation of the multiplicity of assets and generates a shape that represents the grouped assets. The method comprises the steps of using a computer program to associate map and/or geographical data with a physical asset; representing each dispersed asset with an icon or other graphical representation on a display; and using an automatic grouping function to combine at least two of the assets into a single icon or other graphical representation of the multiplicity of assets and generate a shape that represents the grouped assets.

摘要翻译： 用于图形显示有关地理分散资产的信息的系统和方法。 该系统包括将地图和/或地理数据与物理资产相关联的计算机程序; 每个分散资产的图标或其他图形表示; 以及自动分组功能，其将至少两个资产组合成单个图标或多个资产的其他图形表示，并生成表示分组资产的形状。 该方法包括以下步骤：使用计算机程序将地图和/或地理数据与物理资产相关联; 在显示器上用图标或其他图形表示代表每个分散的资产; 并且使用自动分组功能将至少两个资产组合成单个图标或多个资产的其他图形表示，并生成表示分组资产的形状。