-
公开(公告)号：US2583531A
公开(公告)日：1952-01-29
申请号：US54279644
申请日：1944-06-29
CPC分类号： G01S7/534 , G01S1/72 , G01S7/529 , Y10S367/901
-
公开(公告)号：US20210341601A1
公开(公告)日：2021-11-04
申请号：US17375108
申请日：2021-07-14
申请人： R2SONIC, LLC
发明人： Jens Steenstrup , Christopher Tiemann , Mark Chun , Kirk Hobart
IPC分类号： G01S15/89 , G01S7/534 , G01S15/32 , G01S15/58 , G10K11/00 , G10K11/34 , G01S7/52 , G01S7/533
摘要： A survey system including a transmitter, receiver, projector array and hydrophone array transmits and receives sound waves to perform one or more survey missions.
-
公开(公告)号：US10823848B2
公开(公告)日：2020-11-03
申请号：US15905899
申请日：2018-02-27
发明人： Tadashi Morita , Masahiko Hashimoto
摘要： A detection apparatus that includes correlation processing systems that each find a correlation between a predetermined code sequence and a wave detection signal obtained by detecting a phase-modulated input wave at a frequency different from a frequency used by a different one of the correlation processing systems, and thereby generate a correlation signal, level reduction processors that each receive the correlation signal from a corresponding one of the plurality of correlation processing systems and reduce a level of the received correlation signal when the correlation signal is not to be used for detection of the target or do not reduce the level of the received correlation signal when the correlation signal is to be used for detection of the target, and a detector that detects at least presence or absence of the target based on the correlation signal processed by each of the plurality of level reduction processors.
-
公开(公告)号：US10605914B2
公开(公告)日：2020-03-31
申请号：US15581468
申请日：2017-04-28
申请人： R2SONIC, LLC
发明人： Jens Steenstrup , Kirk Hobart , Mark Chun , Christopher Tiemann , Peter Bilodeau
摘要： A survey system including a multibeam echo sounder and a beam selector for selecting beams with the largest amplitudes.
-
公开(公告)号：US20190339359A1
公开(公告)日：2019-11-07
申请号：US15967700
申请日：2018-05-01
发明人： Pu Wang , David Millar , Chungwei Lin , Kieran Parsons , Philip Orlik
摘要： A frequency modulation continuous wave (FMCW)-based system includes an emitter to transmit at least one linearly modulated wave of radiation to a scene and a receiver to receive a reflection of the transmitted wave from one or multiple objects located at different locations in the scene. The system interferes a copy of the wave outputted by the emitter with the reflection of the transmitted wave received by the receiver to produce a beat signal with spectrum peaks corresponding to reflections from the different locations at the scene. The beat signal is distorted due to the non-linearity of the modulation. The system includes a processor to detect a number of spectrum peaks in the distorted beat signal and, only in response to detecting multiple spectrum peaks, jointly determine coefficients of a basis function approximating the non-linearity of the modulation and distances to the different locations at the scene having the objects causing the reflection resulting in the spectrum peaks in the distorted beat signal.
-
公开(公告)号：US10254405B2
公开(公告)日：2019-04-09
申请号：US14817805
申请日：2015-08-04
发明人： Joel F. Campbell , Bing Lin , Amin R. Nehrir
摘要： Systems, methods, and devices may enhance the apparent sample rate of data collected using Nyquist sampling from a system, such as Continuous Wave (CW) Light detection and ranging (“Lidar”), Radio detection and ranging (“Radar”), or Sound Navigation and Ranging (“Sonar”), that has been modulated with a repeating waveform, such as linear swept frequency, by reordering of the data in the frequency domain. The enhancement of the apparent sample rate may result in a highly interpolated range profile where the data resolution may be enhanced by a factor equal to the number of repeats in the signal being processed, and may result in a highly detained range measurement with a high precision. The various embodiments may combine data from multiple modulation repeats into a single highly interpolated pulse, which may result in a real-time finer range measurement from CW Lidar, Radar, or Sonar systems.
-
27.发明授权Ultrasonic measuring system having a reduced minimum range and method for detecting an obstacle 有权具有减小的最小范围的超声波测量系统和用于检测障碍物的方法公开(公告)号：US09557168B2
公开(公告)日：2017-01-31
申请号：US14117128
申请日：2012-03-20
申请人： Albrecht Klotz , Dirk Schmid , Michael Schumann , Matthias Karl
发明人： Albrecht Klotz , Dirk Schmid , Michael Schumann , Matthias Karl
CPC分类号： G01B17/00 , G01S7/527 , G01S7/529 , G01S7/5345 , G01S15/931 , G01V1/00
摘要： An ultrasonic measuring system is described for detecting an obstacle using a resonant transducer element for transmitting an ultrasonic pulse and for generating a received signal which includes the ultrasonic echo pulse reflected from the obstacle, the transducer element generating a decay signal having its resonance frequency after transmitting an ultrasonic pulse. The ultrasonic measuring system includes an evaluation unit having a control unit which is designed to activate the transducer element for transmitting the ultrasonic pulse with the aid of a frequency-modulated transmitted signal generated by the control unit, the frequency modulation taking place with the aid of a modulation signal in such a way that the signature of the ultrasonic pulse differs from that of the decay signal. The evaluation unit is designed to recognize the echo pulse based on an evaluation of a correlation signal which is generated with the aid of at least one correlation filter and which originates from the correlation of the signal generated by the resonant transducer element with the transmitted signal. Furthermore, a corresponding method is provided for detecting an obstacle with the aid of ultrasound, as well as a vehicle assistance system having the ultrasonic measuring system.
摘要翻译： 描述了一种超声波测量系统，用于使用用于发送超声波脉冲的谐振换能器元件来检测障碍物，并且用于生成包括从障碍物反射的超声波回波脉冲的接收信号，所述换能器元件在发送之后产生其谐振频率的衰减信号 超声波脉冲。 所述超声波测量系统包括评估单元，所述评估单元具有控制单元，所述控制单元被设计成借助于由所述控制单元生成的经调频的发送信号来激活用于发送所述超声波脉冲的所述换能器元件，所述调频发生在借助于 调制信号使得超声脉冲的签名与衰减信号的签名不同。 评估单元被设计为基于通过至少一个相关滤波器产生的相关信号的评估来识别回波脉冲，并且其起源于由谐振换能器元件产生的信号与发射信号的相关性。 此外，提供了借助于超声检测障碍物的相应方法，以及具有超声波测量系统的车辆辅助系统。
-
公开(公告)号：US09377530B2
公开(公告)日：2016-06-28
申请号：US13803731
申请日：2013-03-14
发明人： Daniel Kish , Derik DeVecchio
CPC分类号： G01S15/88 , A61F9/08 , A61H3/061 , A61H2003/065 , A61H2201/165 , A61H2201/5097 , G01S7/534
摘要： An echolocation device assists visually impaired persons to navigate their environment. The echolocation device comprises a micro control unit, a power source operably connected to the micro control unit, a band pass preamplifier operably connected to the micro control unit, a power amplifier operably connected to the band pass preamplifier, a piezoelectric speaker operably connected to the power amplifier, and a user interface operably connected to the micro control unit. The device emits sound waves that echo off nearby surrounding objects. The visually impaired person listens to the echoes to determine the location or size of the surrounding objects.
摘要翻译： 回声定位装置帮助视力障碍人员驾驶环境。 回声定位装置包括微控制单元，可操作地连接到微控制单元的电源，可操作地连接到微控制单元的带通前置放大器，可操作地连接到带通前置放大器的功率放大器，可操作地连接到微控制单元的压电扬声器 功率放大器和可操作地连接到微控制单元的用户接口。 该装置发出声波，可以从邻近的周围物体回波。 视障者听取回声以确定周围物体的位置或大小。
-
公开(公告)号：US4697254A
公开(公告)日：1987-09-29
申请号：US869644
申请日：1986-06-02
申请人： Roger G. Pridham
发明人： Roger G. Pridham
摘要： Sonar ice thickness measurement comprises transmitting an AM and subsequent CW sonic radiant energy signals from the water toward the sonic signal reflecting ice cap. Reflection of the CW signal from the water-ice interface and reflection from the water-air interface of the modulating frequency, generated by non-linear or parametric effects in the water by the modulated transmit signal, causes the CW signal to be modulated to generate side bands at the modulating frequency on each side of the carrier frequency to provide an FM high frequency signal. Detection of the FM signal determines the time of arrival of the echo of said detected FM signal relative to the detection of the reflected modulated signal from the water-ice interface.
-
公开(公告)号：US4292678A
公开(公告)日：1981-09-29
申请号：US65880
申请日：1979-08-13
申请人： Leslie Kay
发明人： Leslie Kay
IPC分类号： G01S7/02 , G01S7/52 , G01S7/534 , G01S13/06 , G01S13/34 , G01S13/44 , G01S15/34 , G09B21/00 , G01S15/88
CPC分类号： G01S7/5345 , G01S13/34 , G01S15/34 , G09B21/006 , Y10S367/91
摘要： A method of locating an object by wave energy reflection and an apparatus therefor in which receiving outer transducers provide directional receptivities represented by polar lobes diverging on opposite sides of a reference axis and an inner receiving transducer provide a directional receptivity represented by a narrower polar lobe centered on the reference axis. The signals received from the outer transducers are operated upon in channels of the receiver to modulate them with a frequency swept local signal derived from the transmitted signal and develop indicator signals of difference frequency between the transmitted and received frequencies and which represent the range of the object. The outer signals are displayed binaurally, to enable the user to achieve firstly approximate directional sensing by binaural effect, and thereafter more accurate directional sensing by the use of signals developed in a central channel and derived from the inner transducer or outer transducers simulating an inner transducer. Gain in channels fed from the outer transducers is preferably adjusted as an inverse function of signal strength in the channel. Higher frequency components are preferably accentuated in the inner channel to improve object character recognition.
摘要翻译： 通过波能量反射定位物体的方法及其装置，其中接收外传感器提供由在参考轴线的相对侧上发散的极瓣引起的方向接收，并且内部接收换能器提供由较窄的极化波瓣中心 在参考轴上。 从外部传感器接收到的信号在接收机的信道中操作，以从发送的信号导出的频率扫描本地信号进行调制，并且产生发送和接收的频率之间的差频指示信号，并表示对象的范围 。 外部信号被双重显示，以使用户能够首先通过双耳效应实现近似方向感测，然后通过使用在中央通道中产生的信号并且从内部换能器或外部换能器模拟内部换能器而获得更精确的方向感测 。 优选地，将从外部换能器馈送的通道中的增益调整为通道中的信号强度的反函数。 较高频率的组分优选在内部通道中加强以改善对象字符识别。
-
-
-
-
-
-
-
-
-
搜索结果
79 条记录 (耗时 0.034 秒)