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41. 发明授权

US5077702A Doppler consistent hyperbolic frequency modulation 失效
标题翻译：多普勒一致双曲线频率调制
公开(公告)号：US5077702A
公开(公告)日：1991-12-31
申请号：US615435
申请日：1990-11-16
申请人： William P. Whyland
发明人： William P. Whyland
IPC分类号： G01S15/10
CPC分类号： G01S15/104 , Y10S367/904
摘要： Doppler insensitive waveforms, such as portions of hyperbolas having the same asymptotes, may be used to modulate pulses or sub-pulses of energy for probing a determined environment so that when the modulated energy is transmitted and received, the received energy may be processed, such as by correlation with the transmitted energy without regard to any Doppler frequency shift between the transmitted energy and the received energy. The Doppler frequency shift may have been imparted by reflection of the transmitted energy from an object having a relative radial velocity with respect to a sensor of the received energy. Also included are apparatus for processing received energy by correlation with transmitted energy, a method for modulating energy that may be transmitted and a method for detecting an object without regard to Doppler frequency shift or relative radial velocity.
摘要翻译：诸如具有相同渐近线的双曲线的部分的多普勒不敏感波形可以用于调制用于探测确定的环境的能量的脉冲或子脉冲，使得当调制的能量被发送和接收时，可以处理所接收的能量，而不考虑发射能量与接收能量之间的任何多普勒频移。多普勒频移可以通过相对于所接收的能量的传感器的具有相对径向速度的物体的透射能量的反射来赋予。还包括用于通过与发送的能量相关来处理接收到的能量的装置，用于调制可以被发送的能量的方法和用于在不考虑多普勒频移或相对径向速度的情况下检测对象的方法。

42. 发明授权

US4586172A Adaptable filtering device and method for filtering sonar signals to remove reverberation signals due to vehicle speed and trim and the sea surface and sea bottom 失效
标题翻译：适应性过滤装置和方法，用于过滤声纳信号，以消除由于车辆速度和装饰以及海面和海底的混响信号
公开(公告)号：US4586172A
公开(公告)日：1986-04-29
申请号：US487280
申请日：1983-04-21
申请人： Jean L. Vernet , Philippe Bayle , Georges G. Bienvenu , Gerard Vernay
发明人： Jean L. Vernet , Philippe Bayle , Georges G. Bienvenu , Gerard Vernay
IPC分类号： G01S15/52 , G01S7/66 , G01S15/02
CPC分类号： G01S15/52 , Y10S367/904
摘要： An adaptable filtering device and method for filtering sonar signals to remove reverberation signals caused by the vehicle speed and trim and the sea surface and sea bottom. The vehicle itself has an antenna for transmitting and receiving sonar signals, a speed detector, a trim detector, a depth detector, and a distance-to-sea bottom detector and a sonar output device. The present invention forms paths corresponding to each distinct direction from which sonar signals are received by the antenna, each path having a path signal B.sub.i. For each path, a calculation is made to determine a central Doppler-shift frequency .DELTA.f.sub.i and a cut-off frequency f.sub.c.sbsb.i which are to be used to filter the path signal. This calculation is based upon the detected vehicle speed, the detected vehicle trim, the detected vehicle depth, and the detected distance between the vehicle and the sea bottom. The calculated frequencies .DELTA.f.sub.i and f.sub.c.sbsb.i are then supplied to a controllable filter which filters the path signal and provides a filtered output signal to the sonar output device.
摘要翻译：一种适用于过滤声纳信号的过滤装置和方法，以消除由车辆速度和装饰以及海面和海底引起的混响信号。车辆本身具有用于发射和接收声纳信号的天线，速度检测器，修整检测器，深度检测器和距离海底探测器和声纳输出装置。本发明形成对应于天线接收声纳信号的每个不同方向的路径，每个路径具有路径信号Bi。对于每个路径，进行计算以确定要用于过滤路径信号的中心多普勒频移DELTA fi和截止频率fci。该计算基于检测到的车辆速度，检测到的车辆修整，检测到的车辆深度以及车辆和海底之间的检测距离。然后将计算出的频率DELTA fi和fci提供给可控滤波器，该滤波器对路径信号进行滤波，并将滤波后的输出信号提供给声纳输出装置。

43. 发明授权

US4274148A Digital time-delay beamformer for sonar systems 失效
标题翻译：数字时延波束形成器用于声纳系统
公开(公告)号：US4274148A
公开(公告)日：1981-06-16
申请号：US70686
申请日：1979-08-29
申请人： Adrian van't Hullenaar, deceased
发明人： Adrian van't Hullenaar, deceased
IPC分类号： G01S3/802 , G01S3/80
CPC分类号： G01S3/8022 , Y10S367/90 , Y10S367/904 , Y10S367/905
摘要： There is described a digital sonar receiver having a novel beamformer, own doppler nullifier (O.D.N.), and adaptive time varied gain controller. The beamformer interrogates a multi-element transducer by utilizing an interleaved sampling scheme which samples the elements in the trandsducer array sequentially, in such a fashion that continuous, uniformly spaced samples are obtained. The samples are subsequently converted into digital format, weighed and summed. The O.D.N. eliminates the own ship's doppler effect on the beam output signal resulting in a half beam output signal representative of the target doppler. The O.D.N. offsets the frequency of the beam output signal and a digital generated signal representative of the own ship's doppler. The O.D.N. multiplies these two offsetted signals resulting in a signal lying in each of the sum and difference frequency bands for which the signal lying in the difference frequency band corresponds to the target doppler. The adaptive time varied gain controller varies the gain of preamplifiers at the input of the sonar receiver to be inversely proportional to the momentary average reverberation level of the medium in which the receiver operates. The adaptive time varied gain control apparatus initially sets the gain of the preamplifiers to be inversely proportional to a standard reverberation curve during the first ping-cycle and subsequently updates the gain of the preamplifiers during each successive ping-cycle by computing a gain correction from the average value of a predetermined number of beam output signals.
摘要翻译：描述了具有新颖的波束形成器，自己的多普勒无效器（O.D.N.）和自适应时间变化增益控制器的数字声纳接收器。波束形成器通过利用交替采样方案来询问多元素换能器，该交替采样方案以连续的均匀间隔的样本的顺序依次对样本量阵列中的元素进行采样。样品随后被转换成数字格式，称重和总和。 O.D.N. 消除了自己的船舶对波束输出信号的多普勒效应，从而产生代表目标多普勒的半波束输出信号。 O.D.N. 抵消光束输出信号的频率和表示本船多普勒的数字生成信号。 O.D.N. 将这两个偏移信号相乘，得到位于差频带中的信号对应于目标多普勒的和频和差频带中的每一个中的信号。自适应时间变化增益控制器在声纳接收机的输入处改变前置放大器的增益以与接收器操作的介质的瞬时平均混响电平成反比。自适应时间变化增益控制装置最初将前置放大器的增益设置为与第一个乒乓周期期间的标准混响曲线成反比，随后在每个连续的乒乓周期期间更新前置放大器的增益，预定数量的光束输出信号的平均值。

44. 发明授权

US4206510A Automatic detection and classification device 失效
公开(公告)号：US4206510A
公开(公告)日：1980-06-03
申请号：US518425
申请日：1955-06-27
申请人： Robert D. Strait
发明人： Robert D. Strait
IPC分类号： G01S7/539
CPC分类号： G01S7/539 , Y10S367/901 , Y10S367/904
摘要： 1. In an automatic echo ranging system wherein sonar equipment transmits ses toward a target in predetermined and equal time intervals and receives background, dopplered and undopplered echoes which are produced as video output and audio output, the improvement comprising a gain circuit for controlling the amplitude of the video and audio output, which includes a video channel for the video output of the receiver having a first variable amplifier and means for producing a first bias voltage which is proportional to the video signal voltage, an audio channel for the audio output of the receiver including a second variable amplifier and means for producing a second bias voltage which is proportional to the audio channel signal voltage, said first bias voltage from the video signal being received by said second variable amplifier in the audio channel and said second bias voltage from the audio channel being received by the first variable amplifier in the video channel, a band pass filter and a band rejection filter for the audio output from the second variable amplifier to provide an undopplered signal voltage channel and a dopplered signal voltage channel, classifier means for the dopplered channel and the undopplered channel, said classifier means including means for rectifying, and means for filtering the signals from each channel to remove high frequencies, means for passing a signal above a predetermined amplitude, a wave shaper, a differentiator for the output of the wave shaper to produce a positive and negative pulse from one echo from a target, a first rectifier and a first normally open gate for passage of the positive pulse of the one echo, a second rectifier for passing the negative pulse of the one echo, a second normally closed gate, a maximum pulse length circuit operative by the positive pulse of the one echo to open the second gate for a predetermined time to pass the negative pulse of the one echo, a minimum pulse separation circuit operative by the negative pulse of the one echo to close said first gate for a predetermined maximum range interval of the next echo from the target, a third normally closed gate, a maximum pulse separation circuit operative by the negative pulse of the first echo to open the third gate for the maximum range interval of said next echo from the target, and a relay signal circuit operated when the negative pulse of said next echo from the target passes the third gate to indicate that a target has minimum been located.

45. 发明授权

US3798590A Signal processing apparatus including doppler dispersion correction means 失效
标题翻译：信号处理装置，包括多普勒分散校正装置
公开(公告)号：US3798590A
公开(公告)日：1974-03-19
申请号：US3798590D
申请日：1968-09-12
申请人： US NAVY
发明人： JACOBSON A , HUEY G
IPC分类号： G01S13/34 , G01S15/34 , G01S15/58 , G01S9/68
CPC分类号： G01S15/586 , G01S13/34 , G01S15/34 , Y10S367/904
摘要： Apparatus for processing data signals such as sonar return signals of the frequency modulated type wherein adverse effects of Doppler dispersion are eliminated which apparatus includes a signal generator providing an inverse replica of that signal which is shifted upwardly in frequency and is transmitted as the sonar signal, a pair of digital time compression units for compressing respective ones of the down-shifted sonar return signal, i.e., a data signal, and the replica signal, a pair of step clock generators each enabling the memory bank contents of the associated time compression unit to be read out at respective various rates thereby varying in steps the time compression ratios of the units and bandpass correlation apparatus including a first balanced modulator for receiving and operating on the compressed output signals of the time compression unit. The output frequencies of the step clock generators vary in steps so that the compressed replica signal frequency is, in effect, translated upwardly by decreasing degrees for a range of predetermined positive relative target velocities and, thereafter, the compressed data signal frequency is translated upwardly by increasing degrees for a range of predetermined negative relative target velocities thereby enabling, in effect, correlation of the data signal with a suitable replica signal for each of a number of predetermined relative target velocities in a predetermined range. The filtered output signal from the first modulator and an output signal of a step oscillator whose output signal frequency varies in steps according to the predetermined relative target velocities are applied to a second modulator to compensate for Doppler-induced frequency shifts in the transmitted sonar signal. The filtered output signal of the second modulator is detected and integrated to provide points on the correlation functions in the range-Doppler plane.
摘要翻译：用于处理诸如频率调制型的声纳返回信号的数据信号的装置，其中消除了多普勒色散的不利影响，哪个装置包括提供频率向上偏移并作为声纳信号传输的该信号的反复制的信号发生器，一对数字时间压缩单元，用于压缩下移的声纳返回信号中的各个，即数据信号和复制信号;一对步进时钟发生器，其使相关联的时间压缩单元的存储体内容能够以各种速率读出，从而在步骤中改变包括用于接收和操作时间压缩单元的压缩输出信号的第一平衡调制器的单元和带通相关装置的时间压缩比。步进时钟发生器的输出频率以步进的方式变化，使得压缩的复制信号频率实际上通过在预定的正相对目标速度的范围内减小而向上平移，此后，压缩数据信号频率向上平移在预定的负相对目标速度的范围内增加度数，从而实现数据信号与预定范围内的多个预定相对目标速度中的每一个的适当复制信号的相关性。来自第一调制器的经滤波的输出信号和输出信号频率根据预定相对目标速度逐步变化的阶跃振荡器的输出信号被施加到第二调制器以补偿所发射的声纳信号中的多普勒感应频移。检测并整合第二调制器的经滤波的输出信号，以在范围 - 多普勒平面中提供相关函数上的点。

46. 发明授权

US3368189A Obstacle locator system 失效
标题翻译：障碍定位系统
公开(公告)号：US3368189A
公开(公告)日：1968-02-06
申请号：US23124451
申请日：1951-06-12
申请人： CHIEF OF NAVAL RESEARCH USA
发明人： PAGE ROBERT M
IPC分类号： G01S1/72
CPC分类号： G01S1/72 , Y10S367/904

47. 发明授权

US2839734A Frequency slope detection sonar 失效
标题翻译：频率斜率检测声纳
公开(公告)号：US2839734A
公开(公告)日：1958-06-17
申请号：US15935350
申请日：1950-05-01
申请人： HANLEY WILLIAM T
发明人： HANLEY WILLIAM T
IPC分类号： G01S1/72 , G01S13/34
CPC分类号： G01S13/343 , G01S1/72 , Y10S367/901 , Y10S367/904

48. 发明授权

US09270387B2 Mobile device with an underwater communications system and method 有权
标题翻译：具有水下通信系统和方法的移动设备
公开(公告)号：US09270387B2
公开(公告)日：2016-02-23
申请号：US14061155
申请日：2013-10-23
申请人： WFS Technologies Ltd.
发明人： Derek Wolfe , Brendan Hyland
IPC分类号： H04B13/02
CPC分类号： H04B13/02 , Y10S367/901 , Y10S367/904 , Y10S367/91
摘要： An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms.
摘要翻译：提供一种将电磁和/或磁信号传输到远程接收器的水下通信系统。发射机包括数据输入。数字数据压缩器压缩要发送的数据。调制器将压缩数据调制到载波信号上。电绝缘的磁耦合天线传输压缩的调制信号。具有用于接收压缩的调制信号的电绝缘磁耦合天线的接收器。提供解调器用于解调信号以显示压缩数据。解压缩器解压缩数据。提供适当的人机界面以将传输的数据呈现为文本/音频/可视形式。类似地，发射系统包括适当的音频/视频/文本输入机制。

49. 发明授权

US09037079B2 Mobile device with an underwater communications system and method 有权
标题翻译：具有水下通信系统和方法的移动设备
公开(公告)号：US09037079B2
公开(公告)日：2015-05-19
申请号：US14061230
申请日：2013-10-23
申请人： WFS Technologies Ltd.
发明人： Derek Wolfe , Brendan Hyland
IPC分类号： H04B13/02
CPC分类号： H04B13/02 , Y10S367/901 , Y10S367/904 , Y10S367/91
摘要： A mobile device with an underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms. The portable device may be wearable.
摘要翻译：提供具有水下通信系统的移动设备，其将电磁信号和/或磁信号传输到远程接收器。发射机包括数据输入。数字数据压缩器压缩要发送的数据。调制器将压缩数据调制到载波信号上。电绝缘的磁耦合天线传输压缩的调制信号。具有用于接收压缩的调制信号的电绝缘磁耦合天线的接收器。提供解调器用于解调信号以显示压缩数据。解压缩器解压缩数据。提供适当的人机界面以将传输的数据呈现为文本/音频/可视形式。类似地，发射系统包括适当的音频/视频/文本输入机制。便携式设备可以是可穿戴的。

50. 发明授权

US08682244B2 Underwater communication system 失效
标题翻译：水下通信系统
公开(公告)号：US08682244B2
公开(公告)日：2014-03-25
申请号：US13790386
申请日：2013-03-08
申请人： Mark Rhodes , Derek Wolfe , Brendan Hyland
发明人： Mark Rhodes , Derek Wolfe , Brendan Hyland
IPC分类号： H04B13/02
CPC分类号： H04B13/02 , Y10S367/901 , Y10S367/904 , Y10S367/91
摘要： An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms.
摘要翻译：提供一种将电磁和/或磁信号传输到远程接收器的水下通信系统。发射机包括数据输入。数字数据压缩器压缩要发送的数据。调制器将压缩数据调制到载波信号上。电绝缘的磁耦合天线传输压缩的调制信号。具有用于接收压缩的调制信号的电绝缘磁耦合天线的接收器。提供解调器用于解调信号以显示压缩数据。解压缩器解压缩数据。提供适当的人机界面以将传输的数据呈现为文本/音频/可视形式。类似地，发射系统包括适当的音频/视频/文本输入机制。

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