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公开(公告)号：US06370248B1
公开(公告)日：2002-04-09
申请号：US09126711
申请日：1998-07-31
IPC分类号： H04L926
CPC分类号： H04L9/001 , H04L9/12 , H04L2209/08
摘要： A system for synchronizing chaotic transmitters and receivers that is less sensitive to channel effects than other known chaotic communication methods. The system employs duplicate transmitter and receiving modules and in addition to the chaotic output a synchronizing signal which occupies a reduced bandwidth. The small bandwidth affords the system a greater resistance to the affects of frequency dependent channel distortion and noise. The broad band chaotic signal is transmitted and appears to be noise to an unauthorized listener. The receiving unit employs band pass filtering, and when the signal is received the receiver filters the chaotic signal through band pass filters which eliminate channel noise and make gain control easier to implement.
摘要翻译： 一种用于同步混沌发射机和接收机的系统，其对于信道效应比其他已知的混沌通信方法更不敏感。 该系统采用重复的发射机和接收模块，并且混沌输出除了占用减少的带宽的同步信号。 小的带宽使得系统对频率相关信道失真和噪声的影响有更大的阻力。 宽带混沌信号被传输，并且对于未经授权的监听者来说似乎是噪声。 接收单元采用带通滤波，当接收到信号时，接收机通过带通滤波器对混沌信号进行滤波，消除信道噪声，使得增益控制更容易实现。
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公开(公告)号：US5442510A
公开(公告)日：1995-08-15
申请号：US80155
申请日：1993-06-23
CPC分类号： G05B5/01
摘要： A control system for tracking the operation of a nonlinear system has two parts: a tracking subsystem and a controlling subsystem. The tracking subsystem generates a parametric signal and the controlling subsystem controls and stabilizes the nonlinear system operating under operating conditions corresponding to that parametric signal. The controlling subsystem includes a modulator responsive to the parametric signal and to a feedback signal for producing and applying an input signal to the nonlinear system to cause the nonlinear system to produce an output signal. The controlling subsystem also includes means responsive to the output signal for producing the feedback signal. The controlling subsystem also includes correcting means, operable when the time average of the feedback signal is substantially nonzero, for bringing the time average of the feedback signal from a substantially nonzero value to a substantially zero value, and maintaining means, operable when the time average of the feedback signal is substantially zero, for maintaining the time average of the feedback signal over the selected period of time at a substantially zero value.
摘要翻译： 用于跟踪非线性系统的操作的控制系统具有跟踪子系统和控制子系统两部分。 跟踪子系统产生参数信号，控制子系统控制和稳定在与该参数信号对应的工作条件下工作的非线性系统。 控制子系统包括响应于参数信号的调制器和用于产生并将输入信号施加到非线性系统以使非线性系统产生输出信号的反馈信号。 控制子系统还包括响应于输出信号产生反馈信号的装置。 控制子系统还包括校正装置，当反馈信号的时间平均值基本上不为零时可操作，用于将反馈信号的时间平均值从基本上非零的值提供到基本为零的值;以及维持装置，当时间平均 反馈信号基本上为零，用于将所选择的时间段内的反馈信号的时间平均值维持在基本上为零的值。
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公开(公告)号：US08050141B1
公开(公告)日：2011-11-01
申请号：US12275355
申请日：2008-11-21
IPC分类号： G01S3/802
CPC分类号： G01S11/14 , G01S5/18 , Y10S367/906
摘要： A system and method is provided for estimating a trajectory of an incoming bullet based on the acoustics of the shock wave created as the bullet travels through the air. A first auditory signal representing a direct sound from the shock wave is recorded and its azimuthal direction is determined. Based on this azimuthal direction and other assumptions two possible bullet directions that can cause that shock wave are estimated. A second auditory signal representing a reflection of the shock wave as it travels through the air also is recorded and its azimuthal direction determined. The azimuthal direction of the ground reflection will lie between the azimuthal direction of the first auditory signal and the more correct of the two estimated trajectories, and thus can resolve the ambiguity in the estimated direction of the bullet source.
摘要翻译： 提供了一种系统和方法，用于基于随着子弹穿过空气而产生的冲击波的声学估计进入子弹的轨迹。 记录表示来自冲击波的直接声音的第一听觉信号，并确定其方位角方向。 基于这种方位角方向和其他假设可以导致冲击波估计的两个可能的子弹方向。 表示冲击波在穿过空气中的反射的第二听觉信号也被记录并确定其方位角方向。 地面反射的方位方向位于第一听觉信号的方位方向和两个估计轨迹之间的更正确的位置，因此可以解决子弹源估计方向上的模糊性。
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公开(公告)号：US5402334A
公开(公告)日：1995-03-28
申请号：US880789
申请日：1992-05-11
申请人： Louis L. Pecora , Thomas L. Carroll
发明人： Louis L. Pecora , Thomas L. Carroll
CPC分类号： H03B29/00 , H04L27/001
摘要： A controller is provided for driving at least two systems in synchronization with one another. The controller provides a pseudoperiodic drive to drive the two systems at a desired frequency and to ensure that the two systems are synchronized. The pseudoperiodic drive can be produced by combining a periodic drive with a chaotic drive, noise drive or an incommensurate frequency drive. Any of these types of drives can be combined with the periodic drive by adding to or modulating the periodic drive. Thus, the controller can drive the two systems in phase with one another by using the same pseudoperiodic drive.
摘要翻译： 提供了一种用于相互同步地驱动至少两个系统的控制器。 控制器提供伪周期驱动器，以期望的频率驱动两个系统，并确保两个系统同步。 伪周期驱动可以通过将周期性驱动与混沌驱动，噪声驱动或不相适应的频率驱动组合来产生。 任何这些类型的驱动器可以通过添加或调制周期性驱动器与周期性驱动器组合。 因此，控制器可以通过使用相同的伪周期驱动来相互驱动两个系统。
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公开(公告)号：US06282292B1
公开(公告)日：2001-08-28
申请号：US08736551
申请日：1996-10-24
申请人： Thomas L. Carroll
发明人： Thomas L. Carroll
IPC分类号： H03B2900
CPC分类号： H03B29/00 , G06N7/08 , H04L27/001
摘要： An amplitude insensitive synchronized nonlinear system (AISN) that allows communication between nonlinear systems operating in the chaotic realm which is insensitive to attenuation or signal noise affecting the amplitude of the drive signal, thereby allowing communication between remote systems where the amplitude of the transmitted signal has been varied by an unknown amount.
摘要翻译： 一种振幅不敏感的同步非线性系统（AISN），其允许在混沌领域中操作的非线性系统之间的通信，其对影响驱动信号的幅度的衰减或信号噪声不敏感，从而允许发射信号的振幅具有的 被改变了未知数量。
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公开(公告)号：US06854058B2
公开(公告)日：2005-02-08
申请号：US09839146
申请日：2001-04-23
申请人： Thomas L. Carroll
发明人： Thomas L. Carroll
CPC分类号： H04L9/001 , H04L2209/08
摘要： The low-interference communications device uses chaotic signals which are almost periodic. A chaotic circuit driven by a sine wave signal from a function generator is produced which has narrow-band features in the power spectrum. An information signal is encoded on the chaotic signal by modulating the phase of the sine wave that drives the chaotic circuit. Periodic (narrow-band) components are then removed from the chaotic signal and the chaotic signal is transmitted to a receiver device. The chaotic signal is nonlinear, so the narrow band and broad band parts of the chaotic signal have been modulated together. The transmitted signal is relatively flat, so it will not interfere with other communications signals. At the receiver, the nonlinear chaotic signal is restored by performing a nonlinear operation on the received signal, such as squaring or cubing, to remove the narrowband components. Then the information modulated onto the narrow band component is detected. When this is accomplished it is possible to detect variations in the phase of the base frequency.
摘要翻译： 低干扰通信设备使用几乎是周期性的混沌信号。 产生由功能发生器的正弦波信号驱动的混沌电路，其在功率谱中具有窄带特征。 通过调制驱动混沌电路的正弦波的相位，将信息信号编码在混沌信号上。 然后从混沌信号中去除周期性（窄带）分量，并将混沌信号发送到接收机设备。 混沌信号是非线性的，所以混沌信号的窄带和宽带部分已被调制在一起。 发送的信号相对平坦，因此不会干扰其他通信信号。 在接收机处，通过对接收信号进行非线性运算，如平方或立方，来恢复非线性混沌信号，以去除窄带分量。 然后检测调制到窄带分量上的信息。 当这完成时，可以检测基频的相位变化。
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7.发明授权Method and apparatus for signal generation and detection using unstable periodic chaotic orbits 失效使用不稳定周期性混沌轨道进行信号生成和检测的方法和装置公开(公告)号：US06631166B1
公开(公告)日：2003-10-07
申请号：US09455167
申请日：1999-12-06
申请人： Thomas L. Carroll
发明人： Thomas L. Carroll
IPC分类号： H04L2700
CPC分类号： H04L27/001 , H04B1/69
摘要： A signal generator and signal receiver, as well as method of signal generation and transmission, in which selected unstable periodic orbits of a lossy chaotic system are identified and extracted, and portions of the orbits concatenated together to form a resultant signal. The selected orbits are known to the signal detector a priori. The signal detector detects the transmitted signal by correlation of the received signal with the known extracted orbits, also allowing the detector identify information which the generator imposed onto the signal.
摘要翻译： 一种信号发生器和信号接收机，以及信号产生和传输方法，其中识别和提取有损混沌系统的选定的不稳定周期轨道，并将轨道的部分级联在一起以形成合成信号。 所选择的轨道是先验信号检测器已知的。 信号检测器通过将接收到的信号与已知的提取的轨道相关来检测发射信号，也允许检测器识别发生器施加到信号上的信息。
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8.发明授权Apparatus and method for synchronizing nonlinear systems using filtered signals 失效使用滤波信号同步非线性系统的装置和方法
公开(公告)号：US5655022A
公开(公告)日：1997-08-05
申请号：US536027
申请日：1995-09-29
申请人： Thomas L. Carroll
发明人： Thomas L. Carroll
CPC分类号： H04L27/001 , H04L7/027
摘要： A filtered cascaded synchronized nonlinear system includes a nonlinear transmitter having stable first and second subsystems. The first subsystem produces a first transmitter signal for driving the second subsystem, and the second subsystem produces a second transmitter signal for driving the first subsystem. A first filter filters the second transmitter signal to produce a filter output signal. A subtractor subtracts the filter output signal from the second transmitter signal to produce a transmitter output signal which is transmitted to a nonlinear cascaded receiver. The receiver includes an adder for summing the received transmitter output signal with a receiver filter output signal to restore frequencies that were subtracted from the second transmitter signal in order to produce a first receiver drive signal. The receiver includes cascaded third and fourth subsystems that are respective duplicates of the first and second subsystems. The third subsystem is driven by the first receiver drive signal to produce a first receiver signal in synchronization with the first transmitter signal. The fourth subsystem is driven by the first receiver signal to produce a second receiver signal in synchronization with the second transmitter signal. A second filter filters the second receiver signal to produce the receiver filter output signal.
摘要翻译： 滤波的级联同步非线性系统包括具有稳定的第一和第二子系统的非线性发射机。 第一子系统产生用于驱动第二子系统的第一发射机信号，并且第二子系统产生用于驱动第一子系统的第二发射机信号。 第一滤波器对第二发射机信号进行滤波以产生滤波器输出信号。 减法器从第二发射机信号中减去滤波器输出信号，以产生发送到非线性级联接收机的发射机输出信号。 接收机包括用于将接收到的发射机输出信号与接收机滤波器输出信号相加的加法器，以恢复从第二发射机信号中减去的频率，以产生第一接收机驱动信号。 接收机包括级联的第三和第四子系统，其是第一和第二子系统的相应重复的。 第三子系统由第一接收机驱动信号驱动以与第一发射机信号同步产生第一接收机信号。 第四子系统由第一接收机信号驱动，以与第二发射机信号同步产生第二接收机信号。 第二滤波器对第二接收机信号进行滤波以产生接收机滤波器输出信号。
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公开(公告)号：US5473694A
公开(公告)日：1995-12-05
申请号：US267696
申请日：1994-06-29
CPC分类号： H04L27/001
摘要： A cascaded synchronized system includes a nonlinear transmitter, a nonlinear cascaded receiver, a phase-detector/controller coupled to the receiver, and a signal generator also coupled to the receiver. The transmitter is responsive to an externally generated transmitter forcing signal for producing and transmitting a chaotic communications signal containing phase information. The cascaded receiver is responsive to a receiver forcing signal and to the chaotic communications signal for producing a chaotic receiver output signal containing phase information. The phase-detector/controller is responsive to the chaotic communications signal and to the receiver output signal for producing a correction signal. The signal generator is responsive to the correction signal for producing the receiver forcing signal in phase with and having the same frequency as the transmitter forcing signal.
摘要翻译： 级联同步系统包括非线性发射机，非线性级联接收机，耦合到接收机的相位检测器/控制器，以及耦合到接收机的信号发生器。 发射机响应于外部产生的发射机强制信号用于产生和发送包含相位信息的混沌通信信号。 级联接收机响应于接收机强制信号和混沌通信信号，以产生包含相位信息的混沌接收机输出信号。 相位检测器/控制器响应于混沌通信信号和接收机输出信号以产生校正信号。 信号发生器响应于校正信号，用于产生与发射器强制信号同相并具有相同频率的接收器强制信号。
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公开(公告)号：US5379346A
公开(公告)日：1995-01-03
申请号：US129495
申请日：1993-09-30
申请人： Louis M. Pecora , Thomas L. Carroll
发明人： Louis M. Pecora , Thomas L. Carroll
摘要： A cascaded synchronized nonlinear system includes a nonlinear transmitter having stable first and second subparts. The first subpart produces a first transmitter signal for driving the second subpart and the second subpart produces a second transmitter signal for driving the first subpart. The nonlinear transmitter transmits the second transmitter signal to a nonlinear cascaded receiver. The receiver, being for producing an output signal in synchronization with the second transmitter signal, includes a first stage (a duplicate of the first subpart) responsive to the second transmitter signal for producing a first receiver signal. The receiver further includes a second stage (a duplicate of the second subpart) responsive to the first receiver signal for producing the output signal. The cascaded synchronized nonlinear system can be used in an information transfer system. The transmitter, responsive to an information signal produces a drive signal for transmission to the receiver. An error detector compares the drive signal and the output signal produced by the receiver to produce an error signal indicative of the information contained in the information signal.
摘要翻译： 级联同步非线性系统包括具有稳定的第一和第二子部分的非线性发射机。 第一子部件产生用于驱动第二子部件的第一发送器信号，而第二子部件产生用于驱动第一子部件的第二发送器信号。 非线性发射机将第二发射机信号发送到非线性级联接收机。 用于产生与第二发射机信号同步的输出信号的接收机包括响应于第二发射机信号产生第一接收机信号的第一级（第一子部分的副本）。 接收机还包括响应于第一接收机信号产生输出信号的第二级（第二子部分的副本）。 级联同步非线性系统可用于信息传递系统。 发射机响应于信息信号产生用于传输到接收机的驱动信号。 误差检测器比较由接收器产生的驱动信号和输出信号，以产生指示信息信号中包含的信息的误差信号。
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