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    • 2. 发明授权
    • Object location system and method
    • 对象定位系统和方法
    • US06882315B2
    • 2005-04-19
    • US09978750
    • 2001-10-18
    • Edward A. RichleyRobert J. FontanaDonald V. PerinoAitan Ameti
    • Edward A. RichleyRobert J. FontanaDonald V. PerinoAitan Ameti
    • G01S5/02G01S5/06G01S19/11G01S3/02G01S1/24
    • G01S5/0226G01S5/06
    • An RF object locating system and method that uses or includes a set of N (N>2) receivers (monitoring stations) located at fixed positions in and/or about a region to be monitored, one or more reference transmitters that transmit a timing reference, a location processor that determines object location based on time-of-arrival measurements, and at least one object having an untethered tag transmitter that transmits RF pulses, which may additionally include object ID or other information. Free-running counters in the monitoring stations, whose phase offsets are determined relative to a reference transmitter, are frequency-locked with a centralized reference clock. Time-of-arrival measurements made at the monitoring stations may be stored and held in a local memory until polled by the location processor. The invention permits rapid acquisition of tag transmissions thereby enabling the monitoring of large numbers of objects, and also provides a unique approach to data correlation in severe multipath environments.
    • RF对象定位系统和方法,其使用或包括位于待监视区域中和/或周围的待监视区域中的固定位置的一组N(N> 2)个接收器(监视站),发送定时参考的一个或多个参考发射机 ,基于到达时间测量确定对象位置的位置处理器,以及至少一个具有发送RF脉冲的无阻塞标签发送器的对象,其可另外包括对象ID或其他信息。 监控站中的自由运行计数器,其相位偏移相对于参考发射器确定,使用集中参考时钟进行频率锁定。 在监控站进行的到达时间测量可以存储并保存在本地存储器中,直到由位置处理器轮询。 本发明允许快速获取标签传输,从而使得能够监视大量的对象,并且还提供了在严重多路径环境中的数据相关性的独特方法。
    • 3. 发明授权
    • Waveform adaptive ultra-wideband transmitter
    • 波形自适应超宽带发射机
    • US6026125A
    • 2000-02-15
    • US857836
    • 1997-05-16
    • J. Frederick Larrick, Jr.Robert J. Fontana
    • J. Frederick Larrick, Jr.Robert J. Fontana
    • H04L27/04
    • H04L27/04H04B1/7174H04B2001/6908
    • A waveform adaptive transmitter that conditions and/or modulates the phase, frequency, bandwidth, amplitude and/or attenuation of ultra-wideband (UWB) pulses. The transmitter confines or band-limits UWB signals within spectral limits for use in communication, positioning, and/or radar applications. One embodiment comprises a low-level UWB source (e.g., an impulse generator or time-gated oscillator (fixed or voltage-controlled)), a waveform adapter (e.g., digital or analog filter, pulse shaper, and/or voltage variable attenuator), a power amplifier, and an antenna to radiate a band-limited and/or modulated UWB or wideband signals. In a special case where the oscillator has zero frequency and outputs a DC bias, a low-level impulse generator impulse-excites a bandpass filter to produce an UWB signal having an adjustable center frequency and desired bandwidth based on a characteristic of the filter. In another embodiment, a low-level impulse signal is approximated by a time-gated continuous-wave oscillator to produce an extremely wide bandwidth pulse with deterministic center frequency and bandwidth characteristics. The UWB signal may be modulated to carry multi-megabit per second digital data, or may be used in object detection or for ranging applications. Activation of the power amplifier may be time-gated in cadence with the UWB source thereby to reduce inter-pulse power consumption. The UWB transmitter is capable of extremely high pulse repetition frequencies (PRFs) and data rates in the hundreds of megabits per second or more, frequency agility on a pulse-to-pulse basis allowing frequency hopping if desired, and extensibility from below HF to millimeter wave frequencies.
    • 波形自适应发射机,用于调节和/或调制超宽带(UWB)脉冲的相位,频率,带宽,幅度和/或衰减。 发射机限制或限制频谱范围内的UWB信号,以用于通信,定位和/或雷达应用。 一个实施例包括低级UWB源(例如,脉冲发生器或时间门控振荡器(固定或电压控制)),波形适配器(例如数字或模拟滤波器,脉冲整形器和/或电压可变衰减器) 功率放大器和用于辐射带限和/或调制的UWB或宽带信号的天线。 在振荡器具有零频率并输出DC偏置的特殊情况下,低电平脉冲发生器脉冲激励带通滤波器以产生具有可调节的中心频率和期望带宽的UWB信号,该UWB信号基于滤波器的特性。 在另一个实施例中,低电平脉冲信号由时间选通的连续波振荡器近似,以产生具有确定性中心频率和带宽特性的极宽带宽脉冲。 UWB信号可以被调制以承载多兆位每秒数字数据,或者可以用于对象检测或测距应用中。 功率放大器的激活可以通过UWB源的节奏时间选择,从而减少脉冲间功率消耗。 UWB发射机能够以高达几百兆比特或更高的脉冲重复频率(PRF)和数据速率在脉冲到脉冲基础上实现频率灵活性,允许跳频,如果需要,可扩展性从低于HF到毫米 波频率。
    • 4. 发明授权
    • UWB dual tunnel diode detector for object detection, measurement, or avoidance
    • UWB双隧道二极管检测器,用于物体检测,测量或回避
    • US06239741B1
    • 2001-05-29
    • US09118919
    • 1998-07-20
    • Robert J. FontanaJ. Frederick LarrickJeffrey E. Cade
    • Robert J. FontanaJ. Frederick LarrickJeffrey E. Cade
    • G01S7285
    • G01S13/10G01S7/03G01S13/0209G01S2007/4078
    • A highly sensitive, high-speed dual tunnel diode detector is described for use in Ultra Wideband (UWB) object detection systems, such as a radar. The extended capability of the detector to both extremely short (sub-foot) and long distance (tens of thousands of feet) ranges is unique and permits the application of low power UWB radar to a wide variety of applications including high resolution radar altimetry at altitudes exceeding 10,000 feet and for autonomous on-deck landing operations (e.g., one-foot altitudes), the detection of extremely low radar cross section (RCS) targets for such applications as suspended wire detection for helicopters and other manned and unmanned craft, etc. High noise and interference immunity of the detector permits co-location of a UWB radar sensor with other active systems. The invention has immediate and significant application to all areas, both military and commercial, of precision distance measurement, intrusion detection, targeting, etc. over a wide range of distances.
    • 描述了一种高灵敏度的高速双通道二极管检测器,用于超宽带(UWB)物体检测系统,如雷达。 检测器在极短(亚足)和长距离(数万英尺)范围内的扩展能力是独一无二的,并且允许将低功率UWB雷达应用于各种应用,包括在高度处的高分辨率雷达测高 超过10,000英尺的自主甲板着陆作业(例如,一英尺高度),检测用于直升机和其他载人和无人飞行器等的悬挂线检测的极低雷达横截面(RCS)目标。 检测器的高噪声和抗干扰能力允许将UWB雷达传感器与其他有源系统共同定位。 本发明在广泛的距离范围内,对军事和商业领域的精确距离测量,入侵检测,瞄准等各个方面都立即显着应用。
    • 5. 发明授权
    • Wireless time reference system and method
    • 无线时间参考系和方法
    • US08742986B2
    • 2014-06-03
    • US13270061
    • 2011-10-10
    • Altan AmetiKeming ChenRobert J FontanaEdward A RichleyBelinda Turner
    • Altan AmetiKeming ChenRobert J FontanaEdward A RichleyBelinda Turner
    • G01S1/24
    • G01S5/021G01S5/0009G01S5/14
    • Various methods and apparatuses that utilize a wireless time reference system are provided herein. One example method involves calibrating independent, spatially-located clocks of a geoposition system in order to geolocate an object having an associated object tag. The example method may include transmitting an RF pulse pair, receiving the pulse pair at multiple locations, utilizing respective frequencies of first and second spatially-located clocks to produce count values to effect measurement of an interarrival interval at each of multiple locations, determining a ratio of count values relative to said first and second spatially-located clocks, and utilizing said ratio to calibrate time indications of said clocks. Other related methods and apparatus are also provided.
    • 本文提供了利用无线时间参考系的各种方法和装置。 一个示例性方法包括校准地理位置系统的独立的,位于空间上的时钟,以便对具有相关联的对象标签的对象进行地理定位。 示例性方法可以包括发射RF脉冲对,利用第一和第二空间位置时钟的相应频率在多个位置处接收脉冲对,以产生计数值,以在多个位置的每个位置处测量间隔间隔,确定比率 相对于所述第一和第二空间位置的时钟的计数值,并且利用所述比率来校准所述时钟的时间指示。 还提供了其他相关方法和装置。
    • 6. 再颁专利
    • Ultra-wideband receiver and transmitter
    • 超宽带接收机和发射机
    • USRE44634E1
    • 2013-12-10
    • US12773496
    • 2010-05-04
    • Robert J. FontanaJ. Frederick Larrick, Jr.
    • Robert J. FontanaJ. Frederick Larrick, Jr.
    • H04B1/69
    • H04B1/71637H04B1/71635H04B1/7172H04B1/7174H04B2001/6908
    • A waveform-adaptive ultra-wideband (UWB) transmitter and noise-tracking UWB receiver for use in communications, object detection and radar applications. In one embodiment, the output of an oscillator is gated by a low-level impulse generator either directly or through an optional filter. In a special case of that embodiment wherein the oscillator is zero frequency and outputs a DC bias, a low-level impulse generator impulse-excites a bandpass filter to produce an UWB signal having an adjustable center frequency and desired bandwidth based on a characteristic of the filter. In another embodiment, the low-level impulse signal is approximated by a time-gated continuous-wave oscillator to produce an extremely wide bandwidth pulse with deterministic center frequency and bandwidth characteristics. The low-level impulse signal can be generated digitally. The UWB signal may be modulated to carry data, or may be used in object detection or ranging applications. The power amplifier may be gated to provide a power-efficient UWB transmitter. The UWB transmitter exhibits well defined and controllable spectral characteristics. The UWB transmitter is capable of extremely high pulse repetition frequencies (PRFs) and data rates in the hundreds of megabits per second or more, frequency agility on a pulse-to-pulse basis allowing frequency hopping if desired, and extensibility from below HF to millimeter wave frequencies.
    • 用于通信,物体检测和雷达应用的波形自适应超宽带(UWB)发射机和噪声跟踪UWB接收机。 在一个实施例中,振荡器的输出由低电平脉冲发生器直接或通过可选滤波器选通。 在其中振荡器为零频率并输出DC偏压的该实施例的特殊情况下,低电平脉冲发生器脉冲激励带通滤波器以产生具有可调节的中心频率和期望带宽的UWB信号,该UWB信号基于 过滤。 在另一个实施例中,低电平脉冲信号由时间选通的连续波振荡器近似,以产生具有确定性中心频率和带宽特性的极宽带宽脉冲。 低电平脉冲信号可以数字生成。 UWB信号可以被调制以携带数据,或者可以用于对象检测或测距应用中。 功率放大器可以被门控以提供功率效率的UWB发射机。 UWB发射机具有良好的定义和可控的光谱特性。 UWB发射机能够以高达几百兆比特或更高的脉冲重复频率(PRF)和数据速率在脉冲到脉冲基础上实现频率灵活性,允许跳频,如果需要,可扩展性从低于HF到毫米 波频率。
    • 9. 发明授权
    • High efficiency ultra wideband generator
    • 高效率超宽带发电机
    • US07412007B1
    • 2008-08-12
    • US10644093
    • 2003-08-20
    • Edward A. RichleyRobert J. Fontana
    • Edward A. RichleyRobert J. Fontana
    • H04L25/03
    • H04B1/7174
    • A method and system to produce a spectrally filtered ultra wideband (UWB) signal preferably utilizing a singly terminated filter having an input section and a current switching device directly coupled to the input section. The switching device is operated in a highly nonlinear manner such that an impulse of energy excites the filter in such a way that a vast majority of impulse energy is transmitted to an antenna after spectral filtering thereby yielding a highly efficient, broadband (e.g., ultra wideband) transmission. A substantial fraction of the current switched into the filter passes directly to the antenna. Optionally, the input section of the filter possesses a secondary resonance and the current switching device has a conduction time chosen to be compatible with the secondary resonance.
    • 一种用于产生频谱滤波的超宽带(UWB)信号的方法和系统,优选地利用具有直接耦合到输入部分的输入部分和电流切换装置的单端接滤波器。 开关装置以非常非线性的方式操作,使得能量脉冲以这样的方式激发滤波器,使得在频谱滤波之后绝大多数脉冲能量被传输到天线,从而产生高效的宽带(例如,超宽带 )传输。 切换到滤波器的大部分电流直接传递到天线。 可选地,滤波器的输入部分具有二次谐振,并且电流开关器件具有选择为与次谐波兼容的导通时间。
    • 10. 发明授权
    • Ultra-wideband receiver and transmitter
    • 超宽带接收机和发射机
    • US07369598B2
    • 2008-05-06
    • US11248239
    • 2005-10-13
    • Robert J. FontanaJ. Frederick Larrick, Jr.
    • Robert J. FontanaJ. Frederick Larrick, Jr.
    • H04B1/69
    • H04B1/71637H04B1/71635H04B1/7172H04B1/7174H04B2001/6908
    • A waveform-adaptive ultra-wideband (UWB) transmitter and noise-tracking UWB receiver for use in communications, object detection and radar applications. In one embodiment, the output of an oscillator is gated by a low-level impulse generator either directly or through an optional filter. In a special case of that embodiment wherein the oscillator is zero frequency and outputs a DC bias, a low-level impulse generator impulse-excites a bandpass filter to produce an UWB signal having an adjustable center frequency and desired bandwidth based on a characteristic of the filter. In another embodiment, the low-level impulse signal is approximated by a time-gated continuous-wave oscillator to produce an extremely wide bandwidth pulse with deterministic center frequency and bandwidth characteristics. The low-level impulse signal can be generated digitally. The UWB signal may be modulated to carry data, or may be used in object detection or ranging applications. The power amplifier may be gated to provide a power-efficient UWB transmitter. The UWB transmitter exhibits well defined and controllable spectral characteristics. The UWB transmitter is capable of extremely high pulse repetition frequencies (PRFs) and data rates in the hundreds of megabits per second or more, frequency agility on a pulse-to-pulse basis allowing frequency hopping if desired, and extensibility from below HF to millimeter wave frequencies.
    • 用于通信,物体检测和雷达应用的波形自适应超宽带(UWB)发射机和噪声跟踪UWB接收机。 在一个实施例中,振荡器的输出由低电平脉冲发生器直接或通过可选滤波器选通。 在其中振荡器为零频率并输出DC偏压的该实施例的特殊情况下,低电平脉冲发生器脉冲激励带通滤波器以产生具有可调节的中心频率和期望带宽的UWB信号,该UWB信号基于 过滤。 在另一个实施例中,低电平脉冲信号由时间选通的连续波振荡器近似,以产生具有确定性中心频率和带宽特性的极宽带宽脉冲。 低电平脉冲信号可以数字生成。 UWB信号可以被调制以携带数据,或者可以用于对象检测或测距应用中。 功率放大器可以被门控以提供功率效率的UWB发射机。 UWB发射机具有良好的定义和可控的光谱特性。 UWB发射机能够以高达几百兆比特或更高的脉冲重复频率(PRF)和数据速率在脉冲到脉冲基础上实现频率灵活性,允许跳频,如果需要,可扩展性从低于HF到毫米 波频率。