公开(公告)号：US20120008463A1

公开(公告)日：2012-01-12

申请号：US13089838

申请日：2011-04-19

申请人： Mohsen Badiey ,  Aijun Song ,  Arthur C. Trembanis

发明人： Mohsen Badiey ,  Aijun Song ,  Arthur C. Trembanis

IPC分类号： H04B13/02

CPC分类号： H04B11/00

摘要： Underwater multiple input/multiple output (MIMO) communication apparatus, systems, and methods are disclosed. An underwater MIMO apparatus includes a submersible housing having a water impermeable section, a data acquisition system located within the water impermeable section of the submersible housing, and at least two transmission communication elements electrically connected to the data acquisition system. The MIMO communication apparatus may be used in a communication system including a communication array for communicating with the MIMO communication apparatus using a MIMO communication method.

摘要翻译： 公开了水下多输入/多输出（MIMO）通信装置，系统和方法。 水下MIMO装置包括具有不透水部分的潜水壳体，位于潜水壳体的不透水部分内的数据采集系统以及电连接到数据采集系统的至少两个传输通信元件。 MIMO通信装置可以用于包括使用MIMO通信方法与MIMO通信装置进行通信的通信阵列的通信系统中。

公开(公告)号：US20130208768A1

公开(公告)日：2013-08-15

申请号：US13642704

申请日：2011-06-07

申请人： Aijun Song ,  Mohsen Badiey

发明人： Aijun Song ,  Mohsen Badiey

IPC分类号： H04B15/00 ,  H04B13/02

CPC分类号： H04B15/00 ,  H04B11/00 ,  H04B13/02

摘要： Methods and systems for acoustic multiple-input/multiple-output (MIMO) communication in an underwater environment. The method includes: a) receiving signals at multiple receivers representing transmitted signals from multiple transmitters, b) estimating channel responses between the multiple receivers and the multiple transmitters, c) performing an initial demodulation process on the received signals using the estimated channel responses to remove inter-symbol interference (ISI), and d) performing at least one subsequent demodulation process on the received signals. The subsequent demodulation process: i) removes co-channel interference (CoI) using the estimated channel responses and demodulated signals from an immediately preceding demodulation process to form interference cancelled signals and ii) removes ISI from the interference cancelled signals. In the initial and subsequent demodulation processes, ISI removal includes a time reversal combining process followed by a single-channel decision feedback equalization (DFE) process.

摘要翻译： 在水下环境下进行声学多输入/多输出（MIMO）通信的方法和系统。 该方法包括：a）在多个接收机处接收表示来自多个发射机的发射信号的信号，b）估计多个接收机与多个发射机之间的信道响应，c）使用所估计的信道响应来对接收到的信号执行初始解调处理以去除 符号间干扰（ISI），以及d）对所接收的信号执行至少一个后续解调处理。 随后的解调过程：i）使用估计的信道响应和来自紧接在前的解调过程的解调信号去除同信道干扰（CoI），以形成干扰消除信号，以及ii）从干扰消除信号中去除ISI。 在初始和随后的解调过程中，ISI去除包括后续单信道判决反馈均衡（DFE）过程的时间反转组合过程。

公开(公告)号：US20120195168A1

公开(公告)日：2012-08-02

申请号：US13273852

申请日：2011-10-14

申请人： Mohsen Badiey ,  Boris G. Katsnelson ,  James F. Lynch

发明人： Mohsen Badiey ,  Boris G. Katsnelson ,  James F. Lynch

IPC分类号： G01S15/04

CPC分类号： G01S15/003 ,  G01N29/032 ,  G01N2291/0222 ,  G01N2291/103 ,  G01S15/58

摘要： Methods and systems for detecting a plume of a first fluid in a second fluid using an acoustic wave are provided, where the first fluid has a different acoustic index of refraction than the second fluid. A horizontal array having a plurality of receiving elements receives an acoustic signal propagated through the second fluid and at least one refracted signal refracted by the first fluid. The acoustic signal and the at least one refracted signal form a received signal. An interference pattern is detected from the received signal over the plurality of receiving elements. The interference pattern is due to interference between the acoustic signal and the at least one refracted signal. A horizontal angle of refraction is determined between the acoustic signal and the at least one refracted signal from the interference pattern. The horizontal angle of refraction is indicative of a physical characteristic of the first fluid.

摘要翻译： 提供了使用声波来检测第二流体中的第一流体的羽流的方法和系统，其中第一流体具有与第二流体不同的声学折射率。 具有多个接收元件的水平阵列接收通过第二流体传播的声信号和由第一流体折射的至少一个折射信号。 声信号和至少一个折射信号形成接收信号。 从多个接收元件的接收信号中检测出干扰图案。 干涉图案是由于声信号和至少一个折射信号之间的干扰。 在声学信号和来自干涉图案的至少一个折射信号之间确定水平折射角。 水平折射角表示第一流体的物理特性。

公开(公告)号：US08760970B2

公开(公告)日：2014-06-24

申请号：US13273852

申请日：2011-10-14

申请人： Mohsen Badiey ,  Boris G. Katsnelson ,  James F. Lynch

发明人： Mohsen Badiey ,  Boris G. Katsnelson ,  James F. Lynch

IPC分类号： G01S15/06

CPC分类号： G01S15/003 ,  G01N29/032 ,  G01N2291/0222 ,  G01N2291/103 ,  G01S15/58

摘要： Methods and systems for detecting a plume of a first fluid in a second fluid using an acoustic wave are provided, where the first fluid has a different acoustic index of refraction than the second fluid. A horizontal array having a plurality of receiving elements receives an acoustic signal propagated through the second fluid and at least one refracted signal refracted by the first fluid. The acoustic signal and the at least one refracted signal form a received signal. An interference pattern is detected from the received signal over the plurality of receiving elements. The interference pattern is due to interference between the acoustic signal and the at least one refracted signal. A horizontal angle of refraction is determined between the acoustic signal and the at least one refracted signal from the interference pattern. The horizontal angle of refraction is indicative of a physical characteristic of the first fluid.

摘要翻译： 提供了使用声波来检测第二流体中的第一流体的羽流的方法和系统，其中第一流体具有与第二流体不同的声学折射率。 具有多个接收元件的水平阵列接收通过第二流体传播的声信号和由第一流体折射的至少一个折射信号。 声信号和至少一个折射信号形成接收信号。 从多个接收元件的接收信号中检测出干扰图案。 干涉图案是由于声信号和至少一个折射信号之间的干扰。 在声学信号和来自干涉图案的至少一个折射信号之间确定水平折射角。 水平折射角表示第一流体的物理特性。

公开(公告)号：US20140098841A2

公开(公告)日：2014-04-10

申请号：US13642704

申请日：2011-06-07

申请人： Aijun Song ,  Mohsen Badiey

发明人： Aijun Song ,  Mohsen Badiey

IPC分类号： H04B15/00 ,  H04B13/02

CPC分类号： H04B15/00 ,  H04B11/00 ,  H04B13/02

摘要： Methods and systems for acoustic multiple-input/multiple-output (MIMO) communication in an underwater environment. The method includes: a) receiving signals at multiple receivers representing transmitted signals from multiple transmitters, b) estimating channel responses between the multiple receivers and the multiple transmitters, c) performing an initial demodulation process on the received signals using the estimated channel responses to remove inter-symbol interference (ISI), and d) performing at least one subsequent demodulation process on the received signals. The subsequent demodulation process: i) removes co-channel interference (CoI) using the estimated channel responses and demodulated signals from an immediately preceding demodulation process to form interference cancelled signals and ii) removes ISI from the interference cancelled signals. In the initial and subsequent demodulation processes, ISI removal includes a time reversal combining process followed by a single-channel decision feedback equalization (DFE) process.

摘要翻译： 在水下环境下进行声学多输入/多输出（MIMO）通信的方法和系统。 该方法包括：a）在多个接收机处接收表示来自多个发射机的发射信号的信号，b）估计多个接收机与多个发射机之间的信道响应，c）使用所估计的信道响应来对接收到的信号执行初始解调处理以去除 符号间干扰（ISI），以及d）对所接收的信号执行至少一个后续解调处理。 随后的解调过程：i）使用估计的信道响应和来自紧接在前的解调过程的解调信号去除同信道干扰（CoI），以形成干扰消除信号，以及ii）从干扰消除信号中去除ISI。 在初始和随后的解调过程中，ISI去除包括后续单信道判决反馈均衡（DFE）过程的时间反转组合过程。

公开(公告)号：US09013959B2

公开(公告)日：2015-04-21

申请号：US13272639

申请日：2011-10-13

申请人： Mohsen Badiey ,  Boris Katsnelson

发明人： Mohsen Badiey ,  Boris Katsnelson

IPC分类号： G01S3/80 ,  G01S5/30

CPC分类号： G01S5/30

摘要： Methods and systems for determining a geophysical position of an object in an underwater channel are provided. Acoustic signals from at least two sources are received by a receiver of the object. The acoustic signals have a frequency corresponding to at least one waveguide mode associated with the underwater channel, where the acoustic signals are transmitted at predetermined transmission times. An arrival time for the at least one waveguide mode is determined from the received signals, based on the predetermined transmission times. The geophysical position is determined based on the arrival time and a modal group velocity for the at least one waveguide mode.

摘要翻译： 提供了用于确定水下通道中的物体的地球物理位置的方法和系统。 来自至少两个源的声音信号由对象的接收器接收。 声信号具有对应于与水下通道相关联的至少一个波导模式的频率，其中声信号以预定传输时间传输。 基于预定的传输时间，从接收到的信号确定至少一个波导模式的到达时间。 基于至少一个波导模式的到达时间和模态组速度来确定地球物理位置。

公开(公告)号：US08886498B2

公开(公告)日：2014-11-11

申请号：US13310095

申请日：2011-12-02

申请人： Mohsen Badiey ,  Boris G. Katsnelson

发明人： Mohsen Badiey ,  Boris G. Katsnelson

IPC分类号： G01V1/30 ,  G01N29/02 ,  G01N29/44 ,  G06F17/50 ,  G01V1/28 ,  G01S15/89 ,  G01N29/024

CPC分类号： G06F17/5009 ,  G01N29/02 ,  G01N29/024 ,  G01N29/4472 ,  G01S15/89 ,  G01V1/282 ,  G01V1/303 ,  G01V2210/671 ,  G01V2210/675 ,  G06F2217/16

摘要： Simulators and methods for simulating an acoustic field of an acoustic waveguide are provided. A sound speed profile of the acoustic waveguide is generated, where the acoustic waveguide has a region of a first fluid within a second fluid, and the first fluid has a different acoustic index of refraction than the second fluid. The sound speed profile and predetermined parameters of a sound source and a receiver are applied to a parabolic equation (PE) model of sound propagation in the acoustic waveguide. The acoustic field of the acoustic waveguide is determined from the PE model. The acoustic field includes an interference pattern from interference between an acoustic signal of the acoustic source and at least one signal refracted by the region of the second fluid.

摘要翻译： 提供了用于模拟声波导的声场的模拟器和方法。 产生声波导的声速曲线，其中声波导具有第二流体内的第一流体的区域，并且第一流体具有与第二流体不同的声学折射率。 音源和接收机的声速曲线和预定参数被应用于声波导中的声音传播的抛物线方程（PE）模型。 从PE模型确定声波导的声场。 声场包括来自声源的声学信号与由第二流体的区域折射的至少一个信号之间的干扰的干涉图案。

公开(公告)号：US20120197604A1

公开(公告)日：2012-08-02

申请号：US13310095

申请日：2011-12-02

申请人： Mohsen Badiey ,  Boris G. Katsnelson

发明人： Mohsen Badiey ,  Boris G. Katsnelson

IPC分类号： G06F17/10 ,  G06G7/48

CPC分类号： G06F17/5009 ,  G01N29/02 ,  G01N29/024 ,  G01N29/4472 ,  G01S15/89 ,  G01V1/282 ,  G01V1/303 ,  G01V2210/671 ,  G01V2210/675 ,  G06F2217/16

摘要： Simulators and methods for simulating an acoustic field of an acoustic waveguide are provided. A sound speed profile of the acoustic waveguide is generated, where the acoustic waveguide has a region of a first fluid within a second fluid, and the first fluid has a different acoustic index of refraction than the second fluid. The sound speed profile and predetermined parameters of a sound source and a receiver are applied to a parabolic equation (PE) model of sound propagation in the acoustic waveguide. The acoustic field of the acoustic waveguide is determined from the PE model. The acoustic field includes an interference pattern from interference between an acoustic signal of the acoustic source and at least one signal refracted by the region of the second fluid.

摘要翻译： 提供了用于模拟声波导的声场的模拟器和方法。 产生声波导的声速曲线，其中声波导具有第二流体内的第一流体的区域，并且第一流体具有与第二流体不同的声学折射率。 音源和接收机的声速曲线和预定参数被应用于声波导中的声音传播的抛物线方程（PE）模型。 从PE模型确定声波导的声场。 声场包括来自声源的声学信号与由第二流体的区域折射的至少一个信号之间的干扰的干涉图案。

公开(公告)号：US20120092964A1

公开(公告)日：2012-04-19

申请号：US13272639

申请日：2011-10-13

申请人： Mohsen Badiey ,  Boris Katsnelson

发明人： Mohsen Badiey ,  Boris Katsnelson

IPC分类号： G01S3/80

CPC分类号： G01S5/30

摘要： Methods and systems for determining a geophysical position of an object in an underwater channel are provided. Acoustic signals from at least two sources are received by a receiver of the object. The acoustic signals have a frequency corresponding to at least one waveguide mode associated with the underwater channel, where the acoustic signals are transmitted at predetermined transmission times. An arrival time for the at least one waveguide mode is determined from the received signals, based on the predetermined transmission times. The geophysical position is determined based on the arrival time and a modal group velocity for the at least one waveguide mode.

摘要翻译： 提供了用于确定水下通道中的物体的地球物理位置的方法和系统。 来自至少两个源的声音信号由对象的接收器接收。 声信号具有对应于与水下通道相关联的至少一个波导模式的频率，其中声信号以预定传输时间传输。 基于预定的传输时间，从接收到的信号确定至少一个波导模式的到达时间。 基于至少一个波导模式的到达时间和模态组速度来确定地球物理位置。