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公开(公告)号：US06859419B1
公开(公告)日：2005-02-22
申请号：US10644574
申请日：2003-08-18
IPC分类号： H04B11/00
CPC分类号： H04B11/00
摘要： An apparatus for enabling acousto-optic communication comprising an in-water platform comprising means for emitting an acoustic signal to an acousto-optic interaction zone, an in-air platform comprising the ability for transmitting a first optical interrogation beam, the ability for receiving a portion of the first interrogation beam and a second laser beam formed from the reflection of the first interrogation beam off of the acousto-optic interaction zone, the ability for measuring and outputting a plurality of optical interferences between the portion of the first interrogation beam and the second reflected beam, and a signal converter receiving as input the plurality of optical interferences and outputting an electrical signal representing the received acoustic telemetry signal at the interrogation point at the air-water interface.
摘要翻译： 一种用于实现声光通信的装置，包括水中平台，其包括用于向声光交互区域发射声信号的装置，包括用于发送第一光询问光束的能力的空中平台，用于接收 第一询问光束的部分和由第一询问光束离开声光相互作用区域的反射形成的第二激光束，测量和输出第一询问光束的部分与第一询问光束的部分之间的多个光学干涉的能力 第二反射光束和信号转换器，作为输入接收多个光学干涉，并在空气 - 水界面的询问点处输出表示所接收的声学遥测信号的电信号。
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公开(公告)号：US07505366B1
公开(公告)日：2009-03-17
申请号：US11454457
申请日：2006-06-16
申请人： Fletcher A. Blackmon , Lee E. Estes , Gilbert Fain
发明人： Fletcher A. Blackmon , Lee E. Estes , Gilbert Fain
IPC分类号： H04B11/00
CPC分类号： H04B13/02 , H04B10/1121 , H04B11/00
摘要： The present application provides a linear mechanism for optical-to-acoustic energy conversion for optoacoustic communication from an in-air platform to an undersea vehicle. Signals used in underwater acoustic telemetry applications are capable of being generated through the linear optoacoustic regime conversion process. A number of issues concerning linear optoacoustic communication is addressed that lead to a formulation of a linear regime optoacoustic communication scheme. The use of oblique laser bean incidence at an air-water interface to obtain considerable in-air range from the laser source to the vehicle is also addressed. The effect of oblique incidence on in-water range is addressed as well. Optimum and sub-optimum linear optoacoustic sound-generation techniques for selecting the optical wavelength and signal frequency for optimizing in-water range are identified. Optoacoustic techniques employing M-ary frequency shift keying and multifrequency shift keying are compared with communication parameters such as bandwidth, data rate, range coverage and number of lasers employed.
摘要翻译： 本申请提供了一种用于从空中平台到海底车辆的光声通信的光声能量转换的线性机构。 在水下声学遥测应用中使用的信号能够通过线性光声状态转换过程产生。 解决了一些关于线性光声通信的问题，导致线性光电通信方案的制定。 还讨论了在空气 - 水界面处使用倾斜激光束入射以获得从激光源到车辆的相当大的空中范围。 倾斜入射对水中范围的影响也得到了解决。 确定用于选择光波长和信号频率以优化水中范围的最佳和次优的线性光声声音产生技术。 将采用M频移键控和多频移键控的光声技术与带宽，数据速率，范围覆盖和使用的激光器数量等通信参数进行比较。
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公开(公告)号：US07613074B1
公开(公告)日：2009-11-03
申请号：US11326679
申请日：2006-01-03
IPC分类号： H04B11/00
CPC分类号： H04B11/00
摘要： The present invention includes a system and method of use for communications from an in-air platform to a submerged platform. The system includes a laser positionable on the in-air platform above a water medium that sends a pulsed information-bearing laser beam containing a modulated communications signal to create and react in a non-linear regime manner with the water medium at an air/water interface. The beam vaporizes and optically breaks down a portion of the water medium, creates a shock wave and generates bubble oscillations at the vaporized portion. An acoustic sensor on the submerged platform detects these shock wave oscillations within the water medium and a demodulator-decoder that identifies these broadband acoustic transients that contain deterministically placed energy and demodulates-decodes the acoustic transients into the transmitted communications signals from the in-air platform.
摘要翻译： 本发明包括用于从空中平台到淹没平台的通信的系统和方法。 该系统包括可定位在水介质上方的空中平台上的激光器，其发送包含经调制的通信信号的脉冲信息承载激光束，以在空气/水中以水介质产生并以非线性方式进行反应 接口。 光束蒸发并光学地分解水介质的一部分，产生冲击波并在汽化部分产生气泡振荡。 潜水平台上的声学传感器检测水介质内的这些冲击波振荡，以及解调器 - 解码器，其识别包含确定性放置的能量的这些宽带声学瞬态，并将声学瞬态解调成从空中平台发射的通信信号 。
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公开(公告)号：US20080314155A1
公开(公告)日：2008-12-25
申请号：US11767644
申请日：2007-06-25
IPC分类号： G01N29/44
摘要： A device and system to remotely detect vocalizations of speech. The skin located on the throat region of a speaking person or a reflective layer on the skin on the throat region vibrates in response to vocalizations of speech by the person. The vibrating skin or reflective layer is reflective of impinging radiation. A laser Doppler vibrometer transmits radiation onto the vibrating skin or the covering reflective layer and receives reflected radiation from the vibrating skin or reflective layer. The laser Doppler vibrometer generates voltage output signals that are representative of the speech causing the vibrations. A target tracker directs the impinging radiation and detects the reflected radiation to pass between the throat region and the laser Doppler vibrometer and includes a processor that removes non-speech signal artifacts from the voltage output signals. An interconnected audio speaker reproduces the speech from the voltage output signals.
摘要翻译： 用于远程检测语音发声的设备和系统。 位于喉咙区域上的说话人的喉部区域或皮肤上的反射层上的皮肤响应于人的言语发声而振动。 振动的皮肤或反射层反射入射辐射。 激光多普勒振动计将辐射传播到振动皮肤或覆盖反射层上并接收来自振动皮肤或反射层的反射辐射。 激光多普勒振动计产生代表引起振动的语音的电压输出信号。 目标跟踪器指示入射辐射并检测反射辐射在喉部区域和激光多普勒振动计之间通过，并且包括从电压输出信号去除非语音信号伪影的处理器。 互连音频扬声器从电压输出信号再现语音。
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公开(公告)号：US5258937A
公开(公告)日：1993-11-02
申请号：US867577
申请日：1992-04-13
申请人： Fletcher A. Blackmon
发明人： Fletcher A. Blackmon
CPC分类号： G06F1/0321
摘要： An arbitrary waveform generator is capable of producing pulse or continuousaveform signals. It utilizes an EPROM that sends out selected stored digital signals under control of a microprocessor and auxiliary equipment comprised of a clock and an address sequencer. A digital-to-analog converter receives the digital signals from the EPROM and converts them to analog signals.
摘要翻译： 任意波形发生器能产生脉冲或连续的波形信号。 它利用一个EPROM，它在由时钟和地址排序器组成的微处理器和辅助设备的控制下发出所选存储的数字信号。 数模转换器从EPROM接收数字信号并将其转换为模拟信号。
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公开(公告)号：US07685862B1
公开(公告)日：2010-03-30
申请号：US11116169
申请日：2005-04-25
摘要： A target for a test range includes an impact plate having at least three strain sensors positioned on the plate. The sensors are connected to a data acquisition board for receiving a signal from each sensor upon impact of a projectile on the plate. The data acquisition board is joined to a processor for calculating impact location and energy. Optionally multiple sensors can be provided having different orientations for accounting for different strain components in the plate.
摘要翻译： 测试范围的目标包括具有定位在板上的至少三个应变传感器的冲击板。 传感器连接到数据采集板，用于在抛射体撞击到板上时从每个传感器接收信号。 数据采集板连接到处理器，用于计算冲击位置和能量。 可选地，可以提供具有不同取向的多个传感器来计算板中的不同应变分量。
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公开(公告)号：US07539083B2
公开(公告)日：2009-05-26
申请号：US11767644
申请日：2007-06-25
IPC分类号： G01H9/00
摘要： A device and system to remotely detect vocalizations of speech. The skin located on the throat region of a speaking person or a reflective layer on the skin on the throat region vibrates in response to vocalizations of speech by the person. The vibrating skin or reflective layer is reflective of impinging radiation. A laser Doppler vibrometer transmits radiation onto the vibrating skin or the covering reflective layer and receives reflected radiation from the vibrating skin or reflective layer. The laser Doppler vibrometer generates voltage output signals that are representative of the speech causing the vibrations. A target tracker directs the impinging radiation and detects the reflected radiation to pass between the throat region and the laser Doppler vibrometer and includes a processor that removes non-speech signal artifacts from the voltage output signals. An interconnected audio speaker reproduces the speech from the voltage output signals.
摘要翻译： 用于远程检测语音发声的设备和系统。 位于喉咙区域上的说话人的喉部区域或皮肤上的反射层上的皮肤响应于人的言语发声而振动。 振动的皮肤或反射层反射入射辐射。 激光多普勒振动计将辐射传播到振动皮肤或覆盖反射层上并接收来自振动皮肤或反射层的反射辐射。 激光多普勒振动计产生代表引起振动的语音的电压输出信号。 目标跟踪器指示入射辐射并检测反射辐射在喉部区域和激光多普勒振动计之间通过，并且包括从电压输出信号去除非语音信号伪影的处理器。 互连音频扬声器从电压输出信号再现语音。
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公开(公告)号：US06819630B1
公开(公告)日：2004-11-16
申请号：US10666829
申请日：2003-09-18
IPC分类号： H04B1100
CPC分类号： H04L25/03057 , H04B11/00 , H04L25/03171 , H04L2025/0349
摘要： The present invention provides a receiver for underwater acoustic telemetry which combines a decision feedback adaptive equalizer structure with a modified turbo-equalizer structure. The modified turbo-equalizer structure is of significantly reduced complexity because the decision feedback adaptive equalizer structure is operable to process a plurality of data channels to provide a single symbol data output stream for application to the input of the modified turbo-equalizer which uses a decision feedback equalized, interleaver, deinterleaver and a decoder. Either a hard viterbi decorder for single iteration processing or a soft in/soft out decorder such as a MAP decoder for multiple iteration can be used. The iteration provide improved performance compared to a normal DFE and lower complexity compared to the traditional turbo-equalizer.
摘要翻译： 本发明提供了一种用于水下声学遥测的接收机，其将判决反馈自适应均衡器结构与修改的涡轮均衡器结构组合。 修改的turbo均衡器结构显着降低了复杂度，因为判决反馈自适应均衡器结构可操作以处理多个数据信道以提供单个符号数据输出流，以应用于使用决定的修改的turbo均衡器的输入 反馈均衡，交织器，去交织器和解码器。 可以使用用于单次迭代处理的硬维特比解码顺序或诸如用于多次迭代的MAP解码器的软/软输出解码顺序。 与传统的涡轮均衡器相比，迭代提供了与正常DFE相比更好的性能和更低的复杂性。
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公开(公告)号：US5581516A
公开(公告)日：1996-12-03
申请号：US499338
申请日：1995-07-07
申请人： Fletcher A. Blackmon
发明人： Fletcher A. Blackmon
CPC分类号： H04L25/028
摘要： A low power transmitter providing selectable waveforms includes a self-coined power source, such as a battery. A timer powered by the battery provides a transmitter actuation signal after a predetermined delay. A voltage regulator coupled to the power source and to the timer provides power in response to the transmitter actuation signal. A waveform generator coupled to the voltage regulator provides one or more selected continuous or pulse waveforms when power is supplied by the voltage regulator. The waveform generator is pre-programmed with one or more selected continuous or pulse waveforms in digital format. The waveform generator outputs at least one selected waveform selected when power is provided by the voltage regulator. Any waveform may be selected by appropriately programming the waveform generator. Signal conditioners, coupled to the waveform generator and the voltage regulator, convert the one or more selected waveforms that are output in unfiltered analog format by the waveform generator into corresponding waveforms in analog format. An amplifier, coupled to the voltage regulator and to the signal conditioners, amplifies the one or more selected waveforms in analog format when power is provided by the voltage regulator. A transducer is coupled to the amplifier for acoustically radiating the selected waveforms in analog format in a marine environment.
摘要翻译： 提供可选波形的低功率发射器包括诸如电池的独立电源。 由电池供电的定时器在预定的延迟之后提供发射器致动信号。 耦合到电源和定时器的电压调节器响应于发射器致动信号而提供功率。 耦合到电压调节器的波形发生器在由电压调节器供电时提供一个或多个所选择的连续或脉冲波形。 波形发生器通过数字格式的一个或多个选定的连续脉冲波形进行预编程。 当由电压调节器提供电力时，波形发生器输出至少一个选择的波形。 可以通过适当地编程波形发生器来选择任何波形。 耦合到波形发生器和电压调节器的信号调理器将以波形发生器输出的未经滤波的模拟格式的一个或多个选定波形转换成模拟格式的相应波形。 耦合到电压调节器和信号调理器的放大器在由电压调节器供电时，以模拟格式放大一个或多个所选波形。 传感器耦合到放大器，用于在海洋环境中以模拟格式声学辐射所选择的波形。
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10.发明授权Iterative joint minimum mean square error decision feedback equalizer and turbo decoder 有权迭代联合最小均方误差判决反馈均衡器和turbo解码器公开(公告)号：US08542724B1
公开(公告)日：2013-09-24
申请号：US12880418
申请日：2010-09-13
CPC分类号： H04B11/00 , H04B13/02 , H04L1/005 , H04L25/03057 , H04L25/03171 , H04L2025/03401 , H04L2025/0342 , H04L2025/03636
摘要： An iterative joint Minimum Mean Square Error (MMSE) decision feedback equalizer and turbo decoder includes a turbo decoder portion and a decision feedback equalizer (DFE) portion. The DFE receives input signals and processes these input signals to generate an estimated symbol sequence that is communicated to the turbo decoder portion. The estimated symbol sequence is also communicated to the feedback portion of the DFE. The feedback portion of the DFE includes a symbol-by-symbol detector and a feedback filter. The soft decoder output values generated by the turbo decoder portion are communicated to the feedback portion of the DFE and are combined with the coded output as log likelihood ratio values in a multipass, iterative fashion whereby the equalizer and decoder are linked via iterative feedback to provide communication performance enhancement.
摘要翻译： 迭代联合最小均方误差（MMSE）判决反馈均衡器和turbo解码器包括turbo解码器部分和判决反馈均衡器（DFE）部分。 DFE接收输入信号并处理这些输入信号以产生传送到turbo解码器部分的估计符号序列。 估计的符号序列也传送到DFE的反馈部分。 DFE的反馈部分包括符号符号检测器和反馈滤波器。 由Turbo解码器部分产生的软解码器输出值被传送到DFE的反馈部分，并且以编码输出与多次迭代方式的对数似然比值进行组合，由此均衡器和解码器通过迭代反馈链接以提供 通信性能提升。
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