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公开(公告)号：US07142153B2
公开(公告)日：2006-11-28
申请号：US10863623
申请日：2004-06-08
申请人： Wesley H. Dwelly , Vinh N. Adams
发明人： Wesley H. Dwelly , Vinh N. Adams
CPC分类号： G01S13/32 , G01S13/0209
摘要： A unique hardware architecture that combines short pulse, stepped frequency and centerline processing. The inventive architecture implements a radar system having a transmitter for transmitting short pulses, each pulse being stepped in frequency and a receiver receiving the pulses and providing an output signal in response thereto. In the illustrative embodiment, the transmitter includes a frequency source, an RF switch coupled to the source and a controller for controlling the RF switch. The receiver includes a signal processor implemented with a center line roughing filter. The signal processor has multiple channels each of which has a range gate and a digital filter. The digital filter includes a Fast Fourier Transform adapted to output a range Doppler matrix.
摘要翻译： 独特的硬件架构，结合了短脉冲，阶跃频率和中心线处理。 本发明的架构实现了一种雷达系统，其具有用于发送短脉冲的发射器，每个脉冲都是频率阶跃的，接收器接收脉冲并提供响应于此的输出信号。 在说明性实施例中，发射机包括频率源，耦合到源的RF开关和用于控制RF开关的控制器。 接收机包括用中心线粗糙滤波器实现的信号处理器。 信号处理器具有多个通道，每个通道具有范围门和数字滤波器。 数字滤波器包括适于输出范围多普勒矩阵的快速傅里叶变换。
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2.发明授权公开(公告)号：US06970128B1
公开(公告)日：2005-11-29
申请号：US10959794
申请日：2004-10-06
CPC分类号： G01S13/888 , G01S5/0247 , G01S13/9035
摘要： A see-through-the-wall (STTW) imaging system uses a plurality of geographically separated positioning transmitters to transmit non-interfering positioning signals. An imaging unit generates a synthetic aperture image of a target by compensating for complex movement of the imaging unit using the positioning signals. The imaging unit includes forward and aft positioning antennas to receive at least three of the positioning signals, an imaging antenna to receive radar return signals from the target, and a signal processor to compensate the return signals for position and orientation of the imaging antenna using the positioning signals. The signal processor may construct the synthetic aperture image of a target from the compensated return signals as the imaging unit is moved with respect to the target. The signal processor may determine the position and the orientation of the imaging unit by measuring a relative phase of the positioning signals.
摘要翻译： 透视墙（STTW）成像系统使用多个地理上分离的定位发射机来发射非干扰定位信号。 成像单元通过使用定位信号补偿成像单元的复杂运动来产生目标的合成孔径图像。 该成像单元包括用于接收至少三个定位信号的前进和后部定位天线，用于接收来自目标的雷达返回信号的成像天线和信号处理器，用于补偿使用该成像天线的成像天线的位置和取向的返回信号 定位信号。 当成像单元相对于目标移动时，信号处理器可以从经补偿的返回信号构建目标的合成孔径图像。 信号处理器可以通过测量定位信号的相对相位来确定成像单元的位置和取向。
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公开(公告)号：US06967539B2
公开(公告)日：2005-11-22
申请号：US10643278
申请日：2003-08-18
CPC分类号： H03L7/04
摘要： An oscillator to generate a low phase-noise reference signal at an oscillation frequency includes a frequency generator to generate the reference signal responsive to a control signal, and a delay element made of a high-temperature superconductor material. The delay element time-delays the reference signal and provides a low phase-noise time-delayed reference signal when cooled to a cryogenic temperature. The oscillator includes a phase detector to generate the control signal from a phase difference between the time-delayed reference signal and a phase-shifted reference signal. The delay element may comprise a coplanar waveguide having a length between 500 and 1000 meters arranged randomly on a substrate having a diameter of between five and thirteen centimeters. The delay element may provide a delay ranging from five to fifteen microseconds. The coplanar waveguide may be comprised of Yttrium-Barium-Copper Oxide disposed on either a Lanthanum-Aluminum Oxide or a Magnesium Oxide substrate.
摘要翻译： 用于在振荡频率下产生低相位噪声参考信号的振荡器包括响应于控制信号产生参考信号的频率发生器和由高温超导体材料制成的延迟元件。 延迟元件对参考信号进行时间延迟，并在冷却至低温时提供低相位噪声时间延迟参考信号。 该振荡器包括相位检测器，用于根据延迟时间的参考信号和相移参考信号之间的相位差产生控制信号。 延迟元件可以包括具有在500和1000米之间的长度的共面波导，其随机地布置在直径在5至13厘米之间的基底上。 延迟元件可以提供从5到15微秒的延迟。 共面波导可以由设置在镧 - 氧化铝或氧化镁衬底上的钇 - 氧化铜 - 氧化铜组成。
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4.发明授权Biometric radar system and method for identifying persons and positional states of persons 有权生物识别雷达系统和识别人员位置状态的方法公开(公告)号：US08026840B2
公开(公告)日：2011-09-27
申请号：US11261875
申请日：2005-10-28
申请人： Wesley H. Dwelly , Vinh N. Adams
发明人： Wesley H. Dwelly , Vinh N. Adams
摘要： A biometric radar system and method for identifying a person's positional state are generally described herein. The biometric radar may phase adjust a sequence of radar return signals received through two or more receive antennas to remove at least some phase noise due to the stationary objects. The biometric radar may also segment the phase adjusted radar return signals into a plurality of multi-resolutional Doppler components. Each multi-resolutional Doppler component may be associated with one of a plurality of biometric features. The biometric radar system may also combine and weight the segmented radar returns for each biometric feature to generate weighted classifications for a feature extraction process.
摘要翻译： 本文一般地描述用于识别人的位置状态的生物特征雷达系统和方法。 生物特征雷达可以相位调整通过两个或多个接收天线接收的雷达返回信号的序列，以消除由于静止物体引起的至少一些相位噪声。 生物测定雷达还可以将相位调整的雷达返回信号分段成多个多分辨多普勒分量。 每个多分辨率多普勒分量可以与多个生物特征中的一个相关联。 生物特征雷达系统还可以组合并加权用于每个生物特征的分段雷达返回以产生用于特征提取过程的加权分类。
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公开(公告)号：US20110102234A1
公开(公告)日：2011-05-05
申请号：US12916008
申请日：2010-10-29
申请人： Vinh N. Adams , Robert Adams , Wesley H. Dwelly
发明人： Vinh N. Adams , Robert Adams , Wesley H. Dwelly
IPC分类号： G01S13/00
CPC分类号： G01S7/04 , G01S13/522 , G01S13/582 , G01S13/865 , G01S13/867 , G01S13/888 , H01Q1/125 , H01Q19/132
摘要： A standoff range, sense-through-obstruction radar system is capable of detecting micro-Doppler, or life form signatures, and movements through obstructions at stand-off ranges and displaying the target information over a live video feed of the area under surveillance. The sense-through-obstruction radar system comprises an antenna assembly that includes a horn antenna and a reflector configured to reflect radio frequency (RF) energy to/from the horn antenna. An antenna pointing assembly supports the antenna assembly. The antenna pointing assembly is configured to move the antenna assembly to point the antenna assembly toward an obstruction. A sensor assembly is mounted to the antenna assembly so that the sensor assembly is aligned with the RF beam formed from the RF energy reflected from the reflector to the horn antenna. The sensor assembly is configured to detect the location of the obstruction and to provide information to assist pointing of the antenna assembly toward the obstruction.
摘要翻译： 对角范围，穿透障碍物雷达系统能够检测微多普勒或生命形式的签名，以及通过隔离范围的障碍物的移动，并通过监视区域的实况视频馈送显示目标信息。 感光障碍物雷达系统包括天线组件，其包括喇叭天线和被配置为将射频（RF）能量反射到喇叭天线/从喇叭天线反射的反射器。 天线指向组件支撑天线组件。 天线指向组件被配置为移动天线组件以将天线组件指向障碍物。 传感器组件安装到天线组件，使得传感器组件与从反射器反射到喇叭天线的RF能量形成的RF射束对准。 传感器组件被配置为检测障碍物的位置并且提供信息以帮助天线组件朝向障碍物的指向。
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6.发明授权Pseudo-orthogonal waveforms radar system, quadratic polyphase waveforms radar, and methods for locating targets 有权伪正交波形雷达系统，二次多相波形雷达和定位目标的方法公开(公告)号：US07151478B1
公开(公告)日：2006-12-19
申请号：US11052975
申请日：2005-02-07
申请人： Vinh N. Adams , Wesley H. Dwelly
发明人： Vinh N. Adams , Wesley H. Dwelly
CPC分类号： G01S13/86 , F41G3/147 , G01S13/325 , G01S13/87 , H04J13/00
摘要： In some pseudo-orthogonal waveform embodiments, a radar system transmits pseudo-orthogonal waveforms and performs multiple correlations on a combined single receiver channel signal. In some quadratic polyphase waveform embodiments, a radar system may simultaneously transmit frequency separated versions of a single quadratic polyphase waveform on a plurality of transmit antennas, combine the return signal from each antenna into a combined time-domain signal, and perform a Fourier transformation on the combined time-domain signal to locate a target. The radar system may identify a target, such as sniper's bullet, incoming projectile, rocket-propelled grenade (RPG) or a mortar shell. In some embodiments, the system may estimate the target's trajectory to intercept the target. In some embodiments, the system may estimate the target's trajectory and may further extrapolate the target's trajectory to locate the target's source, such as the sniper.
摘要翻译： 在一些伪正交波形实施例中，雷达系统发射伪正交波形并对组合的单个接收机信道信号执行多个相关。 在一些二次多相波形实施例中，雷达系统可以同时在多个发射天线上发送单个二次多相波形的频率分离版本，将来自每个天线的返回信号组合成组合时域信号，并对 组合的时域信号来定位目标。 雷达系统可以识别目标，例如狙击手的子弹，射弹，火箭榴弹（RPG）或迫击炮弹。 在一些实施例中，系统可以估计目标的轨迹以拦截目标。 在一些实施例中，系统可以估计目标的轨迹，并且可以进一步外推目标的轨迹以定位目标的源，例如狙击手。
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7.发明授权公开(公告)号：US07379017B2
公开(公告)日：2008-05-27
申请号：US11338404
申请日：2006-01-24
申请人： Wesley H. Dwelly , Vinh N. Adams
发明人： Wesley H. Dwelly , Vinh N. Adams
CPC分类号： G01S13/56 , G01S13/18 , G01S13/522
摘要： A pulsed radar system uses phase noise compensation to reduce phase noise due to drift of the reference oscillator to enable detection of micro movements and particularly human motion such as walking, breathing or heartbeat. The noise level due to A/D sampling must be sufficiently low for the phase noise compensation to be effective. As this is currently beyond state-of-the-art for high bandwidth A/D converters used in traditional receiver design, the receiver is suitably reconfigured to use analog range gates and narrowband A/D sampling having sufficiently low noise level. As technology continues to improve, the phase compensation techniques may be directly applicable to the high bandwidth A/D samples in traditional receiver designs. Whether phase compensation is applied to traditional receiver designs or a receiver configured with analog range gates, the steps are essentially the same: data is processed to position a reference range bin (either an analog range gate or a particular time sample) on a stationary reference and the phase variation of that reference range bin is used to compensate the phase of target data in range bins (either an ensemble of range gates or other time samples) near the stationary reference. This effectively moves the radar system and particularly the reference oscillator to the stationary reference thereby greatly reducing oscillator drift and phase noise and decoupling the stand-off range from the level of phase noise.
摘要翻译： 脉冲雷达系统使用相位噪声补偿来减少由于参考振荡器的漂移引起的相位噪声，以便能够检测微动，特别是人的运动，例如步行，呼吸或心跳。 由于A / D采样引起的噪声电平必须足够低以使相位噪声补偿有效。 由于目前在传统接收机设计中使用的高带宽A / D转换器目前已经超出了现有技术水平，接收机被适当地重新配置为使用具有足够低噪声电平的模拟量程门限和窄带A / D采样。 随着技术的不断改进，相位补偿技术可以直接适用于传统接收机设计中的高带宽A / D采样。 相位补偿是应用于传统接收机设计还是配置有模拟量程门限的接收机，步骤基本相同：将数据处理为将参考范围存储区（模拟量程门或特定时间采样）定位在固定参考点 并且该参考范围bin的相位变化用于补偿在固定基准附近的范围仓（或范围门或其他时间样本的集合）中的目标数据的相位。 这有效地将雷达系统，特别是参考振荡器移动到固定基准，从而大大降低了振荡器漂移和相位噪声，并将离散范围与相位噪声电平分离。
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