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1. 发明授权

US07864097B1 Radar transponder operation with compensation for distortion due to amplitude modulation 有权
标题翻译：雷达转发器操作，由于幅度调制而导致失真补偿
公开(公告)号：US07864097B1
公开(公告)日：2011-01-04
申请号：US12349137
申请日：2009-01-06
申请人： Richard C. Ormesher , Bertice L. Tise , Robert M. Axline, Jr.
发明人： Richard C. Ormesher , Bertice L. Tise , Robert M. Axline, Jr.
IPC分类号： G01S13/08
CPC分类号： G01S13/767 , G01S13/90
摘要： In radar transponder operation, a variably delayed gating signal is used to gate a received radar pulse and thereby produce a corresponding gated radar pulse for transmission back to the source of the received radar pulse. This compensates for signal distortion due to amplitude modulation on the retransmitted pulse.
摘要翻译：在雷达应答器操作中，使用可变延迟的门控信号来对接收到的雷达脉冲进行选通，从而产生相应的门控雷达脉冲，用于传输回所接收的雷达脉冲的源。这补偿了由于重发脉冲上的幅度调制引起的信号失真。

2. 发明授权

US06864827B1 Digital intermediate frequency receiver module for use in airborne SAR applications 有权
标题翻译：用于机载SAR应用的数字中频接收模块
公开(公告)号：US06864827B1
公开(公告)日：2005-03-08
申请号：US10686379
申请日：2003-10-15
申请人： Bertice L. Tise , Dale F. Dubbert
发明人： Bertice L. Tise , Dale F. Dubbert
IPC分类号： G01S13/90
CPC分类号： G01S7/288 , G01S13/90
摘要： A digital IF receiver (DRX) module directly compatible with advanced radar systems such as synthetic aperture radar (SAR) systems. The DRX can combine a 1 G-Sample/sec 8-bit ADC with high-speed digital signal processor, such as high gate-count FPGA technology or ASICs to realize a wideband IF receiver. DSP operations implemented in the DRX can include quadrature demodulation and multi-rate, variable-bandwidth IF filtering. Pulse-to-pulse (Doppler domain) filtering can also be implemented in the form of a presummer (accumulator) and an azimuth prefilter. An out of band noise source can be employed to provide a dither signal to the ADC, and later be removed by digital signal processing. Both the range and Doppler domain filtering operations can be implemented using a unique pane architecture which allows on-the-fly selection of the filter decimation factor, and hence, the filter bandwidth. The DRX module can include a standard VME-64 interface for control, status, and programming. An interface can provide phase history data to the real-time image formation processors. A third front-panel data port (FPDP) interface can send wide bandwidth, raw phase histories to a real-time phase history recorder for ground processing.
摘要翻译：数字中频接收机（DRX）模块与诸如合成孔径雷达（SAR）系统的先进雷达系统直接兼容。 DRX可以将1G采样/秒8位ADC与高速数字信号处理器（例如高门数FPGA技术或ASIC）组合，以实现宽带IF接收机。在DRX中实现的DSP操作可以包括正交解调和多速率，可变带宽IF滤波。脉冲 - 脉冲（多普勒域）滤波也可以以预调制器（累加器）和方位预滤器的形式实现。可以使用带外噪声源来向ADC提供抖动信号，并且随后通过数字信号处理被去除。范围和多普勒域过滤操作都可以使用独特的窗格结构来实现，该架构允许即时选择滤波器抽取因子，从而允许滤波器带宽。 DRX模块可以包括用于控制，状态和编程的标准VME-64接口。接口可以向实时图像形成处理器提供相位历史数据。第三个前面板数据端口（FPDP）接口可以将宽带宽的原始相位历史发送到实时的相位历史记录器进行地面处理。

3. 发明授权

US08400349B1 Radar echo processing with partitioned de-ramp 有权
标题翻译：雷达回波处理与分割的斜坡
公开(公告)号：US08400349B1
公开(公告)日：2013-03-19
申请号：US12844576
申请日：2010-07-27
申请人： Dale F. Dubbert , Bertice L. Tise
发明人： Dale F. Dubbert , Bertice L. Tise
IPC分类号： G01S13/58
CPC分类号： G01S7/32 , G01S13/282
摘要： The spurious-free dynamic range of a wideband radar system is increased by apportioning de-ramp processing across analog and digital processing domains. A chirp rate offset is applied between the received waveform and the reference waveform that is used for downconversion to the intermediate frequency (IF) range. The chirp rate offset results in a residual chirp in the IF signal prior to digitization. After digitization, the residual IF chirp is removed with digital signal processing.
摘要翻译：宽带雷达系统的无杂散动态范围通过在模拟和数字处理域之间分配去斜坡处理来增加。在接收波形和用于下变频到中频（IF））范围的参考波形之间应用啁啾率偏移。啁啾率偏移导致在数字化之前的IF信号中的残余啁啾。数字化后，通过数字信号处理去除残余IF啁啾。

4. 发明授权

US06825800B1 Waveform synthesis for imaging and ranging applications 有权
标题翻译：用于成像和测距应用的波形合成
公开(公告)号：US06825800B1
公开(公告)日：2004-11-30
申请号：US10436728
申请日：2003-05-13
申请人： Peter A. Dudley , Armin W. Doerry , Dale F. Dubbert , Bertice L. Tise
发明人： Peter A. Dudley , Armin W. Doerry , Dale F. Dubbert , Bertice L. Tise
IPC分类号： G01S735
CPC分类号： G01S7/288 , G01S7/282 , G01S7/4008 , G01S13/34 , G01S13/90
摘要： Frequency dependent corrections are provided for quadrature imbalance. An operational procedure filters imbalance effects without prior calibration or equalization. Waveform generation can be adjusted/corrected in a synthetic aperture radar system (SAR), where a rolling phase shift is applied to the SAR's QDWS signal where it is demodulated in a receiver; unwanted energies, such as imbalance energy, are separated from a desired signal in Doppler; the separated energy is filtered from the receiver leaving the desired signal; and the separated energy in the receiver is measured to determine the degree of imbalance that is represented by it. Calibration methods can also be implemented into synthesis. The degree of quadrature imbalance can be used to determine calibration values that can then be provided as compensation for frequency dependent errors in components, such as the QDWS and SSB mixer, affecting quadrature signal quality.
摘要翻译：提供频率相关校正用于正交不平衡。操作过程可以过滤不平衡效应，而无需先前的校准或均衡。可以在合成孔径雷达系统（SAR）中调整/校正波形生成，其中滚动相移施加到SAR的QDWS信号，其中它在接收机中被解调; 不寻常的能量，例如不平衡能量，与多普勒中的期望信号分离; 分离的能量从接收器滤除留下期望的信号; 并且测量接收器中分离的能量以确定由其表示的不平衡程度。校准方法也可以实现为合成。正交不平衡的程度可以用于确定校准值，然后可以将其作为校正，以补偿影响正交信号质量的组件（如QDWS和SSB混频器）中的频率相关误差。

5. 发明授权

US06469661B1 Correction of I/Q channel errors without calibration 有权
标题翻译：校正I / Q通道错误
公开(公告)号：US06469661B1
公开(公告)日：2002-10-22
申请号：US09766322
申请日：2001-01-19
申请人： Armin W. Doerry , Bertice L. Tise
发明人： Armin W. Doerry , Bertice L. Tise
IPC分类号： G01S7285
CPC分类号： G01S7/288 , G01S13/282 , G01S2007/2886 , H03D1/2245 , H04L2027/0016
摘要： A method of providing a balanced demodular output for a signal such as a Doppler radar having an analog pulsed input; includes adding a variable phase shift as a function of time to the input signal, applying the phase shifted input signal to a demodulator; and generating a baseband signal from the input signal. The baseband signal is low-pass filtered and converted to a digital output signal. By removing the variable phase shift from the digital output signal, a complex data output is formed that is representative of the output of a balanced demodulator.
摘要翻译：一种为诸如具有模拟脉冲输入的多普勒雷达的信号提供平衡解调输出的方法; 包括将可变相移作为时间的函数添加到输入信号，将相移输入信号施加到解调器; 以及从输入信号产生基带信号。基带信号被低通滤波并转换为数字输出信号。通过从数字输出信号去除可变相移，形成表示平衡解调器的输出的复数数据输出。

6. 发明授权

US4796198A Method for laser-based two-dimensional navigation system in a structured environment 失效
标题翻译：在结构化环境中基于激光的二维导航系统的方法
公开(公告)号：US4796198A
公开(公告)日：1989-01-03
申请号：US919994
申请日：1986-10-17
申请人： Karlan D. Boultinghouse , J. Lee Schoeneman , Bertice L. Tise
发明人： Karlan D. Boultinghouse , J. Lee Schoeneman , Bertice L. Tise
IPC分类号： G01S17/06 , G05D1/02 , G01N21/86
CPC分类号： G01S17/06 , G05D1/0238 , G05D1/0244 , G05D1/027 , G05D1/0272
摘要： A low power, narrow laser beam, generated by a laser carried by a mobile vehicle, is rotated about a vertical reference axis as the vehicle navigates within a structured environment. At least three stationary retroreflector elements are located at known positions, preferably at the periphery of the structured environment, with one of the elements having a distinctive retroreflection. The projected rotating beam traverses each retroreflector in succession, and the corresponding retroreflections are received at the vehicle and focussed on a photoelectric cell to generate corresponding electrical signals. The signal caused by the distinctive retroreflection serves as an angle-measurement datum. An angle encoder coupled to the apparatus rotating the projected laser beam provides the angular separation from this datum of the lines connecting the mobile reference axis to successive retroreflectors. This real-time angular data is utilized with the known locations of the retroreflectors to trigonometrically compute using three point resection, the exact real-time location of the mobile reference axis (hence the navigating vehicle) vis-a-vis the structured environment, e.g., in terms of two-dimensional Cartesian coordinates associated with the environment.
摘要翻译：当车辆在结构化环境中导航时，由移动车辆携带的激光产生的低功率，窄激光束围绕垂直参考轴线旋转。至少三个固定后向反射元件位于已知位置，优选地位于结构化环境的周边，其中一个元件具有独特的回射。投影的旋转光束连续穿过每个后向反射器，并且在车辆处接收相应的后向反射并聚焦在光电池上以产生相应的电信号。由独特的回射引起的信号用作角度测量基准。耦合到旋转投射的激光束的设备的角度编码器提供与将移动参考轴连接到连续后向反射器的线的数据的角度间隔。这种实时角度数据与后向反射器的已知位置一起被利用，以使用三点切除，移动参考轴（因此导航车辆）相对于结构化环境的准确实时位置来进行三角计算，例如在与环境相关的二维笛卡尔坐标方面。

7. 发明授权

US06836240B1 Waveform synthesis for imaging and ranging applications 有权
标题翻译：用于成像和测距应用的波形合成
公开(公告)号：US06836240B1
公开(公告)日：2004-12-28
申请号：US10437329
申请日：2003-05-13
申请人： Dale F. Dubbert , Peter A. Dudley , Armin W. Doerry , Bertice L. Tise
发明人： Dale F. Dubbert , Peter A. Dudley , Armin W. Doerry , Bertice L. Tise
IPC分类号： G01S735
CPC分类号： G01S7/282 , G01S13/282 , G01S13/9035
摘要： Frequency dependent corrections are provided for Local Oscillator (LO) feed-through. An operational procedure filters LO feed-through effects without prior calibration or equalization. Waveform generation can be adjusted/corrected in a synthetic aperture radar system (SAR), where a rolling phase shift is applied to the SAR's QDWS signal where it is demodulated in a receiver, unwanted energies, such as LO feed-through energy, are separated from a desired signal in Doppler; the separated energy is filtered from the receiver leaving the desired signal; and the separated energy in the receiver is measured to determine the degree of imbalance that is represented by it. Calibration methods can also be implemented into synthesis. The degree of LO feed-through can be used to determine calibration values that can then be provided as compensation for frequency dependent errors in components, such as the QDWS and SSB mixer, affecting quadrature signal quality.
摘要翻译：为本地振荡器（LO）馈通提供频率相关校正。操作过程可以过滤LO馈通效应，而无需事先进行校准或均衡。可以在合成孔径雷达系统（SAR）中调整/校正波形生成，其中对接收机中解调的SAR的QDWS信号进行滚动相移，不同的能量（例如LO馈通能量）被分离从多普勒中的期望信号; 分离的能量从接收器滤除留下期望的信号; 并且测量接收器中分离的能量以确定由其表示的不平衡程度。校准方法也可以实现为合成。 LO馈通的程度可用于确定校准值，然后可以将校准值作为校正，以补偿组件中的频率相关误差，如QDWS和SSB混频器，影响正交信号质量。

8. 发明授权

US06828933B1 Waveform synthesis for imaging and ranging applications 有权
标题翻译：用于成像和测距应用的波形合成
公开(公告)号：US06828933B1
公开(公告)日：2004-12-07
申请号：US10436631
申请日：2003-05-13
申请人： Armin W. Doerry , Peter A. Dudley , Dale F. Dubert , Bertice L. Tise
发明人： Armin W. Doerry , Peter A. Dudley , Dale F. Dubert , Bertice L. Tise
IPC分类号： G01S735
CPC分类号： G01S7/282 , G01S7/4008 , G01S13/34 , G01S13/90
摘要： Frequency dependent corrections are provided for quadrature imbalance and Local Oscillator (LO) feed-through. An operational procedure filters imbalance and LO feed-through effects without prior calibration or equalization. Waveform generation can be adjusted/corrected in a synthetic aperture radar system (SAR), where a rolling phase shift is applied to the SAR's QDWS signal where it is demodulated in a receiver; unwanted energies, such as LO feed-through and/or imbalance energy, are separated from a desired signal in Doppler; the separated energy is filtered from the receiver leaving the desired signal; and the separated energy in the receiver is measured to determine the degree of imbalance that is represented by it. Calibration methods can also be implemented into synthesis. The degree of LO feed-through and imbalance can be used to determine calibration values that can then be provided as compensation for frequency dependent errors in components, such as the QDWS and SSB mixer, affecting quadrature signal quality.
摘要翻译：为正交不平衡和本地振荡器（LO）馈通提供频率相关校正。操作过程过滤不平衡和LO馈通效应，无需事先校准或均衡。可以在合成孔径雷达系统（SAR）中调整/校正波形生成，其中滚动相移施加到SAR的QDWS信号，其中它在接收机中被解调; 不需要的能量，例如LO馈通和/或不平衡能量，与多普勒中的期望信号分离; 分离的能量从接收器滤除留下期望的信号; 并且测量接收器中分离的能量以确定由其表示的不平衡程度。校准方法也可以实现为合成。 LO馈通和不平衡的程度可用于确定校准值，然后可以将其作为校正元件（如QDWS和SSB混频器）中的频率相关误差的补偿，从而影响正交信号质量。

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