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21. 发明专利

JP4883883B2 Digital sounder module and detection method 有权
公开(公告)号：JP4883883B2
公开(公告)日：2012-02-22
申请号：JP2003406588
申请日：2003-12-04
申请人：レイマリンエルティーディーRaymarine Ltd.
发明人：ステンソガード
IPC分类号： G01S7/526 , G01S15/10 , G01S7/527 , G01S7/529 , G01S15/96
CPC分类号： G01S7/5273 , G01S7/529 , G01S15/96 , Y10S367/90

22. 发明专利

JP2004184420A Digital depth sounder module and detection method 有权
公开(公告)号：JP2004184420A
公开(公告)日：2004-07-02
申请号：JP2003406588
申请日：2003-12-04
申请人： Raymarine Ltd , レイマリンエルティーディーRaymarine Ltd.
发明人： SOGAARD STEN
IPC分类号： G01S15/10 , G01S7/526 , G01S7/527 , G01S7/529 , G01S15/96
CPC分类号： G01S7/5273 , G01S7/529 , G01S15/96 , Y10S367/90
摘要： PROBLEM TO BE SOLVED: To provide a digital depth sounder module which has a high sensitivity and a wide measuring range and a sensing method using the digital depth finder module.
SOLUTION: The digital depth sounder module comprises a sonar carrier wave generation means, a band pass filter, a preamplifier which is possible to obtain the high sensitivity and the wide measuring range, a digitized superheterodyne sensor, and an A/D converter for an intermediate frequency generation. The digital depth finder module controls a gain of the preamplifier and consists of a programmable logic device and a microprocessor which filter the intermediate frequency digitally. In the detection method, the digital depth finder module receives the sonar carrier wave, filters the sonar carrier wave by the band pass filter, amplifies the filtered sonar carrier wave by the preamplifier, transfers the amplified sonar carrier wave to the A/D converter, generates the intermediate frequency of the sonar carrier wave, controls the preamplifier and the A/D converter by using the programmable logic device, filters the sonar carrier wave digitally and senses the sonar carrier wave digitally.
COPYRIGHT: (C)2004,JPO&NCIPI

23. 发明授权

US06950372B2 Digital sounder module and method for detecting 有权
标题翻译：数字式发声器模块及其检测方法
公开(公告)号：US06950372B2
公开(公告)日：2005-09-27
申请号：US10704606
申请日：2003-11-12
申请人： Sten Sogaard
发明人： Sten Sogaard
IPC分类号： G01S15/10 , G01S7/526 , G01S7/527 , G01S7/529 , G01S15/96 , G01S15/00
CPC分类号： G01S7/5273 , G01S7/529 , G01S15/96 , Y10S367/90
摘要： The invention is a digital sounder module and its method for detection. The digital sounder module includes a sonar carrier wave producing means, a band-pass filter, a pre-amplifier for providing a high sensitivity and extending a wide dynamic range, and an analog-to-digital converter for providing a digital implementation of a superheterodyne detector and producing an intermediate frequency. The digital sounder module also includes a programmable logic device for controlling a gain of the pre-amplifier and for digitally filtering the intermediate frequency and a microprocessor. The method implemented by the controlled per-amplifier gain processes the return echo signal by controlled ramp up of the gain over time to compensate for the change in signal strength in proportion to the length of the return path.
摘要翻译：本发明是数字式发声器模块及其检测方法。数字发声器模块包括声纳载波产生装置，带通滤波器，用于提供高灵敏度和扩展宽动态范围的前置放大器，以及用于提供超外差数字实现的模 - 数转换器检测器并产生中频。数字发声器模块还包括用于控制前置放大器的增益和用于数字滤波中频的可编程逻辑器件和微处理器。通过控制的每放大器增益实现的方法通过随着时间的增益的控制斜升来处理返回回波信号，以补偿与返回路径的长度成比例的信号强度的变化。

24. 发明授权

US5425000A Spatial rejection of direct blast interference in multistatic sonars 失效
标题翻译：多声道声纳直接爆炸干扰的空间排斥
公开(公告)号：US5425000A
公开(公告)日：1995-06-13
申请号：US169887
申请日：1993-12-16
申请人： Francis A. Reed , Paul H. Thai
发明人： Francis A. Reed , Paul H. Thai
IPC分类号： G01S7/529 , G01S13/00 , G01S15/87 , G01S15/02
CPC分类号： G01S7/529 , G01S15/87 , G01S13/003 , Y10S367/90 , Y10S367/901
摘要： A multistatic sonar system (50) employing a short duration automatic gain control (AGC) following beamforming of the return signal to reject spatial transients at the sonar waveform leading and trailing edges. The output of the beamformer (58) is delayed by a delay line (60A) before passing through a programmable gain (60B). The magnitude of an undelayed version of the beamformer output is also squared (60D) and averaged over a time window (60E). This average is used to normalize the delayed value of the beamformer output. The normalized output of the beamformer is compared (60C) with a threshold having a value much greater than unity, and the comparator output controls the gain circuit (60B). When the normalized value of the beamformer output exceeds the threshold value, the gain of the AGC is set to a value much smaller than unity. When the normalized value of the beamformer output does not exceed the threshold, the gain of the AGC is set to unity.
摘要翻译：波束形成返回信号之后采用短时间自动增益控制（AGC）的多状态声纳系统（50），以消除声纳波形引导和后沿处的空间瞬变。在通过可编程增益（60B）之前，波束形成器（58）的输出被延迟线（60A）延迟。波束形成器输出的未延迟版本的幅度也被平方（60D）并且在时间窗口（60E）上取平均值。该平均值用于归一化波束形成器输出的延迟值。将波束形成器的归一化输出与具有远大于1的值的阈值进行比较（60℃），并且比较器输出控制增益电路（60B）。当波束形成器输出的归一化值超过阈值时，AGC的增益被设置为远小于单位的值。当波束形成器输出的归一化值不超过阈值时，AGC的增益被设置为1。

25. 发明授权

US5260910A High resolution acoustic pulse-echo ranging system 失效
标题翻译：高分辨率声脉冲回波测距系统
公开(公告)号：US5260910A
公开(公告)日：1993-11-09
申请号：US961532
申请日：1992-10-15
申请人： Stanley Panton
发明人： Stanley Panton
IPC分类号： G01F23/28 , G01S7/524 , G01S15/10 , G01S15/00
CPC分类号： G01S7/524 , G01S15/102 , Y10S367/90
摘要： The uncertainty inherent in high-resolution acoustic pulse-echo distance measuring systems which depend on threshold detection is overcome by transmitting a multi-cycle shot of acoustic energy having a sharply peaked amplitude profile, and locating the peak amplitude of a received echo. The peaked amplitude is achieved by timing the duration of energization of a transducer producing the shot so that energization is terminated before the amplitude of oscillation of the transducer has reached a maximum. This produces a shot which has a definite largest cycle, which should in turn produce an echo having a definite largest cycle.

26. 发明授权

US4975889A Acoustic ranging apparatus and method 失效
标题翻译：声测距仪及方法
公开(公告)号：US4975889A
公开(公告)日：1990-12-04
申请号：US207744
申请日：1988-06-16
申请人： Steven P. Petrucelli , Stephen A. Orbine, III
发明人： Steven P. Petrucelli , Stephen A. Orbine, III
IPC分类号： G01S7/527
CPC分类号： G01S7/527 , Y10S367/90
摘要： An acoustic ranging apparatus directs a burst of acoustic energy toward an acoustically reflective target object. The time it takes for an echo to return to the ranging apparatus is measured to determine the distance between the ranging apparatus and the object. The echo is received, amplified, and compared with a threshold voltage which decays in time in a manner which simulates the attenuation of acoustic energy as a function of distance travelled in the medium. The attenuation function is substantially simulated over the distance range that the ranging apparatus is intended to accurately measure by means of a simple, low cost first order linear circuit. The ranging apparatus responds only to echoes having a magnitude which exceeds the threshold voltage. Suprious or false echoes, such as those due to reflection of acoustic energy in the side lobes produced by an acoustic energy transducer in the ranging apparatus, are ignored.
摘要翻译：声学测距装置将声能脉冲引导到声反射目标物体。测量回波返回到测距装置所花费的时间，以确定测距装置与对象之间的距离。回波被接收，放大，并与阈值电压进行比较，阈值电压以模拟声能衰减的方式随时间衰减，作为介质中行进距离的函数。在距离范围内基本上模拟衰减功能，该距离范围旨在通过简单的低成本一阶线性电路来精确地测量。测距装置仅响应于具有超过阈值电压的振幅的回波。由于在测距装置中由声能换能器产生的旁瓣中的声能的反射引起的振动或假回波被忽略。

27. 发明授权

US4829490A Electrical signal discrimination 失效
标题翻译：电信号歧视
公开(公告)号：US4829490A
公开(公告)日：1989-05-09
申请号：US760956
申请日：1985-07-31
申请人： John A. Parker
发明人： John A. Parker
IPC分类号： G01S7/527 , G01S7/28 , G01S7/32 , G01S7/52 , G01S7/536
CPC分类号： G01S7/52004 , G01S7/52026 , Y10S367/90
摘要： The electrical response of a transducer contains a data-providing signal or signals superimposed on an unwanted time-variable background signal which is independent of the data-providing signal or signals. A system processing the transducer response utilizes an electronically stored digital simulation of the background components whereby combination of the transducer output with the digital simulation, after digital to analogue conversion of the latter, substantially frees the transducer output of the background component to facilitate detection of the data-providing signals.
摘要翻译：换能器的电响应包含叠加在与数据提供信号或信号无关的不期望的时间可变背景信号上的数据提供信号或信号。处理换能器响应的系统利用电子存储的背景组件的数字模拟，由此在后者的数模转换之后，换能器输出与数字模拟的组合基本上释放背景组件的换能器输出，以便于检测数据提供信号。

28. 发明授权

US4452085A Method and means for generating time gain compensation control signal for use in ultrasonic scanner and the like 失效
标题翻译：用于生成用于超声波扫描器等的时间增益补偿控制信号的方法和装置
公开(公告)号：US4452085A
公开(公告)日：1984-06-05
申请号：US369370
申请日：1982-04-19
申请人： Norbert J. Pelc , Stephen W. Flax
发明人： Norbert J. Pelc , Stephen W. Flax
IPC分类号： G01H3/00 , G01S7/52 , G01N29/00 , A61B10/00
CPC分类号： G01S7/52033 , G01H3/00 , Y10S367/90 , Y10S73/90
摘要： A time gain control (TGC) signal for a variable gain amplifier in an ultrasonic scanner is derived by determining the attenuation at many levels in the object under examination and then constructing the TGC signal based on the cumulative attenuation of an ultrasonic signal through the object. A zero crossing detector such as a Schmitt triggered monostable multivibrator receives a reflected ultrasonic wave signal and generates pulses which are counted during time intervals corresponding to a depth level in the object. By comparing the zero crossing density at one level to the zero crossing density at another level a measure of attenuation between the two levels is obtained.
摘要翻译：超声波扫描仪中的可变增益放大器的时间增益控制（TGC）信号通过确定被检查物体中的许多级别的衰减，然后基于通过物体的超声波信号的累积衰减来构造TGC信号而导出。诸如施密特触发单稳态多谐振荡器之类的零交叉检测器接收反射的超声波信号并产生在与物体中的深度级相对应的时间间隔期间被计数的脉冲。通过将一个级别的零交叉密度与另一级的零交叉密度进行比较，可以获得两个级别之间的衰减量度。

29. 发明授权

US4378596A Multi-channel sonic receiver with combined time-gain control and heterodyne inputs 失效
标题翻译：具有组合时间增益控制和外差输入的多通道声波接收器
公开(公告)号：US4378596A
公开(公告)日：1983-03-29
申请号：US353010
申请日：1982-03-01
申请人： Lloyd D. Clark
发明人： Lloyd D. Clark
IPC分类号： G01S7/52 , G01S15/02
CPC分类号： G01S7/52033 , Y10S367/90 , Y10S73/90
摘要： In a receiver for pulsed ultrasonic beams, it is sometimes desirable to translate the received signal to a lower carrier frequency by a heterodyne process. It is also often desirable to vary the receiving channels' gain during the period when signals are being received from a single transmitted pulse, to compensate for the attenuation of later-arriving signals from a greater distance. To get both the heterodyne and the time-gain control functions in a prior-art receiver of N channels requires 2 mixers in each channel, or 2N mixers. According to the invention, the heterodyne and the time-gain control signals are combined in one master mixer and fed to all the channel mixers. The only N+1 mixers are required.
摘要翻译：在用于脉冲超声波束的接收机中，有时期望通过外差过程将接收到的信号转换为较低的载波频率。通常期望在从单个发射脉冲接收信号的时段期间改变接收信道的增益，以补偿来自较大距离的后来信号的衰减。为了获得N个信道的现有技术接收机中的外差和时间增益控制功能，在每个信道中需要2个混频器，或2N个混频器。根据本发明，外差和时间增益控制信号在一个主混合器中组合并馈送到所有信道混频器。唯一的N + 1混音器是必需的。

30. 发明授权

US4316269A Own doppler nullifier for sonar system 失效
标题翻译：用于声纳系统的多普勒无效信号
公开(公告)号：US4316269A
公开(公告)日：1982-02-16
申请号：US196306
申请日：1980-10-14
申请人： Adrian van't Hullenaar, deceased
发明人： Adrian van't Hullenaar, deceased
IPC分类号： G01S3/802 , G01S15/58
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 transducers 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。波束成形器通过利用交替采样方案来询问多元件换能器，该方案以获得连续均匀间隔的样本的方式顺序地对换能器阵列中的元件进行采样。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。

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