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1. 发明授权

US07606290B1 Architecture for signal acquisition with cyclic range search 有权
标题翻译：具有循环范围搜索的信号采集架构
公开(公告)号：US07606290B1
公开(公告)日：2009-10-20
申请号：US11416621
申请日：2006-05-03
申请人： Carlos J. Chavez , Gunther B. Frank , Robert J. Frank
发明人： Carlos J. Chavez , Gunther B. Frank , Robert J. Frank
IPC分类号： H04B1/00
CPC分类号： H04B1/7075
摘要： An architecture for a spread-spectrum transmitter-receiver system in an advanced tactical data link that allows the receiver to readily acquire and synchronize to a desired LPD signal. Signal acquisition is performed with a cyclic range search that uses multiple redundant known sequences mapped to a known message sequence in a highly repeated manner. By employing the invariance of the speed of light, and synchronicity between transmitter and receiver, the architecture can significantly reduce the computational complexity of the receiver. Additionally, the architecture enables ad hoc channel access, controlled latency, distance estimation, and distance-directed transmissions.
摘要翻译：用于高级战术数据链路中的扩频发射机 - 接收机系统的架构，其允许接收机容易地获取并同步到期望的LPD信号。以循环范围搜索进行信号采集，循环范围搜索使用以高度重复的方式映射到已知消息序列的多个冗余已知序列。通过采用光速不变性和发射机与接收机之间的同步性，该架构可以显着降低接收机的计算复杂度。此外，该体系结构可实现自组织频道访问，受控延迟，距离估计和距离定向传输。

2. 发明授权

US07733839B1 Dynamic socket waveform 有权
标题翻译：动态套接字波形
公开(公告)号：US07733839B1
公开(公告)日：2010-06-08
申请号：US11338233
申请日：2006-01-24
申请人： Robert J. Frank , Karl F. Hoech , Gunther B. Frank , Carlos J. Chavez
发明人： Robert J. Frank , Karl F. Hoech , Gunther B. Frank , Carlos J. Chavez
IPC分类号： H04J1/00
CPC分类号： H04L5/0005 , H04L5/0037 , H04L5/008 , H04W84/18
摘要： A system capable of operation with dynamic sockets includes a plurality of communications devices. Each of the plurality of communications devices includes high band channel radio resources capable of communications at 900-2800 MHz and socket radio resources capable of communications at 30-1000 MHz. The high band channel radio resources and the socket radio resources are significantly separated in frequency so that the high band channel radio resources and the socket radio resources are suitable for concurrent operation with no interference and minimal isolation, co-site problems to solve in each of the plurality of communications devices. The plurality of communications devices are connected to a unifying mesh network by the high band channel radio resources. The unifying mesh network is suitable for allowing the plurality of communications devices to communicate with one another. When data needs to be transferred among a group of communications devices, a dynamic socket connection is negotiated on the unifying mesh network and is then formed with the socket radio resources. The dynamic socket formation is suitable for allowing the unifying mesh network to offload continuous receiver-directed or multicast traffic from the unifying mesh network channel and to free up public ad hoc communications bandwidth of the unifying mesh network.
摘要翻译：能够与动态插座一起操作的系统包括多个通信设备。多个通信设备中的每一个包括能够在900-2800MHz通信的高频带信道无线电资源和能够以30-1000MHz通信的插座无线电资源。高频信道无线电资源和套接字无线电资源在频率上显着分开，使得高频带信道无线电资源和套接字无线电资源适合并行操作，无干扰和最小隔离，每个节点中要解决的协同问题多个通信设备。多个通信设备通过高频带信道无线电资源连接到统一网状网络。统一网状网络适于允许多个通信设备彼此通信。当需要在一组通信设备之间传送数据时，在统一网状网络上协商动态套接字连接，然后形成套接字无线电资源。动态套接字形成适合于允许统一网状网络从统一网状网络信道卸载连续的接收机导向或组播业务，并释放统一网状网络的公共自组织通信带宽。

3. 发明授权

US07636383B1 Signal acquisition with efficient doppler search 有权
标题翻译：信号采集与高效多普勒搜索
公开(公告)号：US07636383B1
公开(公告)日：2009-12-22
申请号：US11416619
申请日：2006-05-03
申请人： Carlos J. Chavez , Gunther B. Frank , Robert J. Frank
发明人： Carlos J. Chavez , Gunther B. Frank , Robert J. Frank
IPC分类号： H04B1/00
CPC分类号： H04B1/7075
摘要： A receiver for computationally efficient signal acquisition of spread-spectrum chips affected by Doppler shift in an advanced tactical data link. Received signals with a very low signal-to-noise ratio are parsed in a multi-stage signal acquisition circuit architecture, and compared to a known sequence to determine correlation over a subset of the known sequence. Chip-rate-coherent correlation is performed over an interval of time for which the effect of Doppler shift on the chip rate are negligible. A non-coherent block then integrates intermediate metrics to obtain final metrics for the entire known sequence. The parsing of the correlation into subsets and stages allows for a more computationally efficient solution to the Doppler shift chip rate error problem by reducing the number of intermediate metrics that must be computed at high speed.
摘要翻译：用于在高级战术数据链路中受多普勒频移影响的扩频码片的计算有效信号采集的接收机。在多级信号采集电路架构中解析具有非常低信噪比的接收信号，并与已知序列进行比较，以确定已知序列的子集上的相关性。芯片速率相干相关是在多普勒频移对码片速率的影响可忽略的时间间隔上执行的。然后，非相干块集成中间度量以获得整个已知序列的最终度量。将相关性分解为子集和阶段允许通过减少必须以高速计算的中间度量的数量来更多地计算有效地解决多普勒频移码片率误差问题。

4. 发明授权

US07024172B1 Direct conversion receiver using a dithered local oscillator to mitigate adjacent channel coherent interference 有权
标题翻译：直接转换接收机使用抖动本地振荡器来减轻相邻信道相干干扰
公开(公告)号：US07024172B1
公开(公告)日：2006-04-04
申请号：US09883016
申请日：2001-06-15
申请人： Patrick J. Murphy , Gunther B. Frank , Dennis Hoffman , Carlos J. Chavez
发明人： Patrick J. Murphy , Gunther B. Frank , Dennis Hoffman , Carlos J. Chavez
IPC分类号： H04M1/00
CPC分类号： H04B1/30
摘要： A direct conversion quadrature receiver and method are provided according to the invention. The receiver according to one embodiment includes a primary local oscillator (LO) that down-converts a received RF signal to a quadrature intermediate frequency (IF) signal. The receiver further includes a dithering controller responsive to the quadrature IF signal generated by the primary LO. The dithering controller communicates a feedback signal back to the primary LO. The feedback signal controls the primary LO in order to offset down-conversion of the RF signal by the quadrature IF signal. The dithering controller offsets the primary LO from a zero-IF signal in order to reduce a phase and gain error of the quadrature IF signal.
摘要翻译：根据本发明提供了直接转换正交接收机和方法。根据一个实施例的接收机包括将接收的RF信号下变频为正交中频（IF）信号的主本地振荡器（LO）。接收机还包括响应于由主LO产生的正交IF信号的抖动控制器。抖动控制器将反馈信号传送回主LO。反馈信号控制主LO，以便通过正交IF信号来偏移RF信号的下变频。抖动控制器将主LO与零中频信号进行偏移，以减少正交IF信号的相位和增益误差。

5. 发明授权

US07570711B1 Quadrature LINC transmission method and apparatus 有权
标题翻译：正交LINC传输方法和装置
公开(公告)号：US07570711B1
公开(公告)日：2009-08-04
申请号：US10414931
申请日：2003-04-16
申请人： Carlos J. Chavez , Gunther B. Frank , Dennis L. Hoffman
发明人： Carlos J. Chavez , Gunther B. Frank , Dennis L. Hoffman
IPC分类号： H04L27/36
CPC分类号： H04L27/362 , H03F1/0294 , H03F2200/336
摘要： A quadrature LINC transmission system processes a baseband input signal for transmission as a linearly amplified RF signal. An in-phase LINC element processes an in-phase baseband signal into an in-phase RF signal. A quadrature LINC element processes a quadrature baseband signal into a quadrature RF signal. An output combiner combines the in-phase RF signal with the quadrature RF signal to provide the linearly amplified RF signal. The in-phase LINC element has a constant envelope decomposition block for decomposing the in-phase baseband signal into in-phase baseband constant envelope components. Two up-converters convert the in-phase baseband constant envelope components to in-phase RF constant envelope components. Two non-linear amplifiers amplify the in-phase RF constant envelope components. A combiner combines the amplified in-phase RF constant envelope components to yield the in-phase RF signal. The quadrature LINC element is similar to the in-phase LINC element and provides the quadrature RF signal.
摘要翻译：正交LINC传输系统处理用于传输的基带输入信号作为线性放大的RF信号。同相LINC元件将同相基带信号处理成同相RF信号。正交LINC元件将正交基带信号处理成正交RF信号。输出组合器将同相RF信号与正交RF信号组合以提供线性放大的RF信号。同相LINC元件具有用于将同相基带信号分解为同相基带恒定包络分量的恒定包络分解块。两个上变频器将同相基带恒包络分量转换为同相RF恒包络分量。两个非线性放大器放大同相RF恒定包络分量。组合器组合放大的同相RF恒定包络分量以产生同相RF信号。正交LINC元件类似于同相LINC元件，并提供正交RF信号。

6. 发明授权

US08743854B1 Signal separation and SINR enhancement 有权
标题翻译：信号分离和SINR增强
公开(公告)号：US08743854B1
公开(公告)日：2014-06-03
申请号：US12891588
申请日：2010-09-27
申请人： Jason A. Fuemmeler , Gina M. Reyes , Shubha L. Kadambe , Robert J. Frank , Carlos J. Chavez , W. Sam Spencer , Michael N. Newhouse
发明人： Jason A. Fuemmeler , Gina M. Reyes , Shubha L. Kadambe , Robert J. Frank , Carlos J. Chavez , W. Sam Spencer , Michael N. Newhouse
IPC分类号： H04B7/216
CPC分类号： H04B17/336 , H04B1/7107
摘要： An apparatus and method for signal separation and SINR improvement is disclosed. In particular, disclosed is an iterative technique whereby a noisy signal, that may include signals from one or more distinct emitters, is first improved through an SINR improvement technique. Next, one signal from the noisy signal is identified and a reference signal substantially free of noise and interference is generated for this signal, and then this reference signal is subtracted from the noisy signal. This process is repeated until no other signals may be identified. In this way, the signal with the highest SINR may be identified first and then removed from the original signal. As such, the identified signal is no longer present as interference for the remaining signals, thus improving each of the remaining signals' respective SINRs.
摘要翻译：公开了一种用于信号分离和SINR改进的装置和方法。特别地，公开了一种迭代技术，其中可以包括来自一个或多个不同发射器的信号的噪声信号首先通过SINR改进技术得到改进。接下来，识别来自噪声信号的一个信号，并为该信号产生基本上没有噪声和干扰的参考信号，然后从噪声信号中减去该参考信号。重复该过程，直到不能识别出其它信号。以这种方式，可以首先识别具有最高SINR的信号，然后从原始信号中去除。因此，所识别的信号不再作为对剩余信号的干扰而存在，从而改善了每个剩余信号的各自的SINR。

7. 发明授权

US07414980B1 Interference estimation for interference excision with low computational complexity 有权
标题翻译：具有低计算复杂度的干扰切除干扰估计
公开(公告)号：US07414980B1
公开(公告)日：2008-08-19
申请号：US11098757
申请日：2005-04-04
申请人： Carlos J. Chavez , Robert J. Frank , Erik M. Sjolander
发明人： Carlos J. Chavez , Robert J. Frank , Erik M. Sjolander
IPC分类号： H04L12/26
CPC分类号： H04B1/123
摘要： The present invention is a method and system for estimating interference. Packet characteristics of relevant packets within the channel at a given point in time may be processed. For example, a power level, occupied frequency and corresponding time references may be accumulated and stored for each relevant packet within the channel at a given point in time. As each packet is processed for demodulation, the channel samples, at which interference occurred, may be appropriately weighted based on the packet characteristics. Advantageously, the nature of the interfering channel traffic may be measured to properly de-weight the interference in a computationally efficient manner.
摘要翻译：本发明是用于估计干扰的方法和系统。可以处理给定时间点内的信道内的相关分组的分组特征。例如，功率电平，占用频率和对应的时间基准可以在给定时间点内的频道内的每个相关分组被累积和存储。当每个分组被处理以进行解调时，可以基于分组特征适当地加权发生干扰的信道样本。有利地，可以测量干扰信道业务的性质，以便以计算上有效的方式适当地减去干扰。

8. 发明授权

US08699971B1 System for specific emitter identification 有权
标题翻译：特定发射体识别系统
公开(公告)号：US08699971B1
公开(公告)日：2014-04-15
申请号：US13679025
申请日：2012-11-16
申请人： Shubha L. Kadambe , Jason A. Fuemmeler , Carlos J. Chavez , William S. Spencer , Gina M. Reyes , Robert J. Frank , Michael N. Newhouse
发明人： Shubha L. Kadambe , Jason A. Fuemmeler , Carlos J. Chavez , William S. Spencer , Gina M. Reyes , Robert J. Frank , Michael N. Newhouse
IPC分类号： H04B17/00
CPC分类号： G01S5/0215 , H04B1/70735 , H04B17/27 , H04B17/336 , H04B17/345 , H04K3/22 , H04K3/228 , H04K3/45 , H04K3/822
摘要： An apparatus for identifying a specific emitter in the presence of noise and/or interference is disclosed. The apparatus includes a sensor configured to sense radio frequency signal data, the signal data containing noise and signal from at least one emitter, a reference estimation unit configured to estimate a reference signal relating to the signal transmitted by one emitter, a feature estimation unit configured to generate one or more estimates of one or more feature from the reference signal and the signal transmitted by that particular emitter, and an emitter identifier configured to identify the signal transmitted by that particular emitter as belonging to a specific device using one or more feature estimates. The emitter identifier identifies the signal transmitted by that particular emitter as belonging to a specific device using Gaussian Mixture Models and the Bayesian decision engine.
摘要翻译：公开了一种用于在存在噪声和/或干扰的情况下识别特定发射器的装置。该装置包括：传感器，被配置为感测射频信号数据，包含噪声的信号数据和来自至少一个发射器的信号;参考估计单元，被配置为估计与由一个发射器发送的信号有关的参考信号;配置的特征估计单元从所述参考信号和由所述特定发射器发送的信号产生一个或多个特征的一个或多个估计，以及发射器标识符，其被配置为使用一个或多个特征估计来识别由所述特定发射器发送的属于特定设备的信号。发射器标识符将由特定发射器发送的信号识别为使用高斯混合模型和贝叶斯判决引擎的特定设备。

9. 发明授权

US08494464B1 Cognitive networked electronic warfare 有权
标题翻译：认知联网电子战
公开(公告)号：US08494464B1
公开(公告)日：2013-07-23
申请号：US12877418
申请日：2010-09-08
申请人： Shubba L. Kadambe , Benjamin J. Haan , Jason A. Fuemmeler , W. Sam Spencer , Carlos J. Chavez , Robert J. Frank
发明人： Shubba L. Kadambe , Benjamin J. Haan , Jason A. Fuemmeler , W. Sam Spencer , Carlos J. Chavez , Robert J. Frank
IPC分类号： H03C1/62
CPC分类号： H04K3/45 , G01S5/06
摘要： An apparatus for sensing and classifying radio communications is provided. The apparatus includes one or more sensor units configured to detect radio frequency signals, a signal classifier configured to classify the detected radio frequency signals into a classification, the classification including at least one known signal type and an unknown signal type, a clustering learning algorithm capable of finding clusters of common signals among the previously seen unknown signals. The system is then further configured to use these clusters to retrain the signal classifier to recognize these signals as a new signal type.
摘要翻译：提供了一种用于感测和分类无线电通信的装置。该装置包括被配置为检测射频信号的一个或多个传感器单元，被配置为将检测到的射频信号分类为分类的信号分类器，该分类包括至少一种已知信号类型和未知信号类型，能够进行聚类学习算法在以前看到的未知信号中找到共同信号的簇。该系统然后被进一步配置为使用这些簇来重新训练信号分类器以将这些信号识别为新的信号类型。

10. 发明授权

US07970947B1 Tactical targeting network technology small form factor user system 有权
标题翻译：战术瞄准网络技术小型用户系统
公开(公告)号：US07970947B1
公开(公告)日：2011-06-28
申请号：US11077174
申请日：2005-03-10
申请人： Robert J. Frank , Carlen R. Welty , Scott J. Zogg , Carlos J. Chavez , Bruce S. Kloster
发明人： Robert J. Frank , Carlen R. Welty , Scott J. Zogg , Carlos J. Chavez , Bruce S. Kloster
IPC分类号： G06F15/16
CPC分类号： H04W28/06 , H04W84/10 , Y02D70/22
摘要： The present invention is directed to a small size and light weight small form factor user system suitable for having TTNT connectivity which consumes minimum power to operate. The small form factor user system having TTNT connectivity may be capable of interacting in a low latency real time manner with airborne networks. The small form factor user system having TTNT connectivity may have significantly reduced radio power consumption and form factor size through maintaining core capabilities of the full size TTNT terminal while relaxing other capabilities. An encapsulated message structure may be utilized to simplify communication between the TTNT small form factor user system and the full size TTNT nodes.
摘要翻译：本发明涉及一种适合于具有消耗最小功率操作的TTNT连接的小尺寸和重量轻的小尺寸用户系统。具有TTNT连接性的小型用户系统可能能够以低延迟的实时方式与机载网络进行交互。具有TTNT连接性的小型用户系统可以通过维持全尺寸TTNT终端的核心能力同时放松其他功能而显着降低无线电功耗和外形尺寸。可以使用封装的消息结构来简化TTNT小尺寸用户系统与全尺寸TTNT节点之间的通信。

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