专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明授权

US07693428B2 Optical orthogonal frequency division multiplexed communications with nonlinearity compensation 有权
标题翻译：光学正交频分复用通信与非线性补偿
公开(公告)号：US07693428B2
公开(公告)日：2010-04-06
申请号：US12418060
申请日：2009-04-03
申请人： Jacob Khurgin , Isaac Shpantzer
发明人： Jacob Khurgin , Isaac Shpantzer
IPC分类号： H04B10/04 , H04B10/06
CPC分类号： H04J14/02 , H04B10/61 , H04B10/611 , H04B10/613 , H04B10/614 , H04B10/6163 , H04B10/6165 , H04B10/63 , H04J14/06 , H04L27/18 , H04L27/2096 , H04L27/2697 , H04L2027/0018
摘要： The present invention discloses a transmitter and receiver for optical communications system, which provide compensation of the optical link nonlinearity. M-PSK modulating is used for data embedding in an optical signal in each WDM channel using orthogonal frequency division multiplexing (OFDM) technique. At the receiver side electrical output signals from a coherent optical receiver are processed digitally with the link nonlinearity compensation. It is followed by the signal conversion into frequency domain and information recovery from each subcarrier of the OFDM signal. At the transmitter side an OFDM encoder provides a correction of I and Q components of a M-PSK modulator driving signal to compensate the link nonlinearity prior to sending the optical signal to the receiver.
摘要翻译：本发明公开了一种用于光通信系统的发射机和接收机，其提供了光链路非线性的补偿。使用正交频分复用（OFDM）技术，M-PSK调制用于每个WDM信道中的光信号中的数据嵌入。在接收机侧，来自相干光接收机的电输出信号用链路非线性补偿数字地处理。随后将信号转换成频域，并从OFDM信号的每个子载波进行信息恢复。在发射机侧，OFDM编码器提供M-PSK调制器驱动信号的I和Q分量的校正，以在将光信号发送到接收机之前补偿链路非线性。

62. 发明申请

US20090224157A1 SYSTEM AND METHOD FOR HIGH Z MATERIAL DETECTION 有权
标题翻译：用于高Z材料检测的系统和方法
公开(公告)号：US20090224157A1
公开(公告)日：2009-09-10
申请号：US12272780
申请日：2008-11-17
申请人： Jacques Goldberg , Isaac Shpantzer , Yaskov Achiam , Nadejda Reingand
发明人： Jacques Goldberg , Isaac Shpantzer , Yaskov Achiam , Nadejda Reingand
IPC分类号： G01F23/00
CPC分类号： G01T1/2935
摘要： A method and system for high Z material revealing using muon detection technique is presented. The system measures muons' coordinates, velocities, incidence angles and leaving angles. Two series of detectors: one above and one below the interrogated volume are used. A muon trajectory deviation from an expected trajectory is used for the decision making on the presence of high Z material inside the volume. The muon velocity is measured using either a ring Cerenkov counter, a transition radiation detector or/and a threshold Cerenkov counter. The expected trajectory is calculated basing on known particle velocity.
摘要翻译：提出了一种使用μon检测技术进行高Z材料显露的方法和系统。该系统测量μons的坐标，速度，入射角和离开角度。使用两个系列的探测器：一个高于和低于询问的体积。与预期轨迹的μ轨迹偏差用于在体积内存在高Z材料的决策上。使用环Cerenkov计数器，过渡辐射检测器或/和阈值Cerenkov计数器测量μ子速度。预期的轨迹是基于已知的粒子速度计算的。

63. 发明申请

US20090190929A1 OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED COMMUNICATIONS WITH NONLINEARITY COMPENSATION 有权
标题翻译：具有非线性补偿的光学正交频分多路通信
公开(公告)号：US20090190929A1
公开(公告)日：2009-07-30
申请号：US12418060
申请日：2009-04-03
申请人： Jacob Khurgin , Isaac Shpantzer
发明人： Jacob Khurgin , Isaac Shpantzer
IPC分类号： H04J14/02
CPC分类号： H04J14/02 , H04B10/61 , H04B10/611 , H04B10/613 , H04B10/614 , H04B10/6163 , H04B10/6165 , H04B10/63 , H04J14/06 , H04L27/18 , H04L27/2096 , H04L27/2697 , H04L2027/0018
摘要： The present invention discloses a transmitter and receiver for optical communications system, which provide compensation of the optical link nonlinearity. M-PSK modulating is used for data embedding in an optical signal in each WDM channel using orthogonal frequency division multiplexing (OFDM) technique. At the receiver side electrical output signals from a coherent optical receiver are processed digitally with the link nonlinearity compensation. It is followed by the signal conversion into frequency domain and information recovery from each subcarrier of the OFDM signal. At the transmitter side an OFDM encoder provides a correction of I and Q components of a M-PSK modulator driving signal to compensate the link nonlinearity prior to sending the optical signal to the receiver.
摘要翻译：本发明公开了一种用于光通信系统的发射机和接收机，其提供了光链路非线性的补偿。使用正交频分复用（OFDM）技术，M-PSK调制用于每个WDM信道中的光信号中的数据嵌入。在接收机侧，来自相干光接收机的电输出信号用链路非线性补偿数字地处理。随后将信号转换成频域，并从OFDM信号的每个子载波进行信息恢复。在发射机侧，OFDM编码器提供M-PSK调制器驱动信号的I和Q分量的校正，以在将光信号发送到接收机之前补偿链路非线性。

64. 发明申请

US20080025728A1 COHERENT OPTICAL TRANSCEIVER AND COHERENT COMMUNICATION SYSTEM AND METHOD FOR SATELLITE COMMUNICATIONS 有权
标题翻译：相干光收发器和卫星通信的相关通信系统及方法
公开(公告)号：US20080025728A1
公开(公告)日：2008-01-31
申请号：US11867351
申请日：2007-10-04
申请人： Isaac Shpantzer , Sabera Kazi
发明人： Isaac Shpantzer , Sabera Kazi
IPC分类号： H04B10/00
CPC分类号： H04B10/118 , H04B10/40 , H04B10/61
摘要： An optical transceiver is provided for optical communications with additive noise compensation. The system and method are disclosed for the additive noise cancellation, which is typically a vibration noise, caused by moving platform, where the transceiver is located. The transceiver comprises an additive noise sensor and a digital signal processing (DSP) unit which implements variable step size technique to adjust the filter weight in the least square estimate of the noise signal. In the preferred embodiment the digital signal processing is applied both at the transmission and the receiving side. The optical device is packed for ground-satellite and inter-satellite communications applications with resistance to high-energy X-rays, gamma rays and cosmic rays. The optical device sustains its operation characteristics under launch load.
摘要翻译：提供光收发器用于具有附加噪声补偿的光通信。公开了用于附加噪声消除的系统和方法，其通常是由收发器所在的移动平台引起的振动噪声。收发器包括一个附加噪声传感器和一个数字信号处理（DSP）单元，它实现可变步长技术，以调整噪声信号的最小二乘估计中的滤波器权重。在优选实施例中，在传输和接收侧都应用数字信号处理。该光学装置用于地面卫星和卫星间通信应用，具有耐高能X射线，γ射线和宇宙射线的能力。光学装置在发射载荷下维持其运行特性。

65. 发明申请

US20070115475A1 System and method for chemical sensing using trace gas detection 有权
标题翻译：使用痕量气体检测的化学感测系统和方法
公开(公告)号：US20070115475A1
公开(公告)日：2007-05-24
申请号：US11561966
申请日：2006-11-21
申请人： Isaac Shpantzer
发明人： Isaac Shpantzer
IPC分类号： G01J3/45 , G01B9/02
CPC分类号： G01N21/171 , G01N21/3504 , G01N21/359 , G01N21/39 , G01N2021/1793
摘要： A system and method is proposed for chemicals detection such as explosives and others, which are based on sensing of trace gases associated with the chemical. This sensing includes detection of spectrum and relative concentration of the trace gases followed by the chemical identification based on these data. The sensing is based on photothermal interferometry method modified by implementation of coherent optical detection. This modification essentially improves the device performance by increasing its sensitivity and selectivity. Improved characteristics of the device allow remote sensing of the interrogated chemicals at a distance up to 1000 meters, which is crucial for explosives detection. The coherent optical detection is performed by a coherent receiver based on 90-degrees optical hybrid.
摘要翻译：提出了一种用于化学物质检测的系统和方法，例如爆炸物等，其基于与化学品相关的痕量气体的检测。该检测包括基于这些数据检测光谱和痕量气体的相对浓度，然后进行化学鉴定。该感测是基于相干光学检测实现修改的光热干涉法。该修改通过增加其灵敏度和选择性来实质地改善器件性能。改进的设备特性允许远程检测被询问的化学品，距离高达1000米，这对于爆炸物检测至关重要。相干光学检测由基于90度光学混合的相干接收机执行。

66. 发明授权

US08041224B2 Optical frequency division multiplexed communications over the horizon 有权
标题翻译：光学频分复用通信在地平线上
公开(公告)号：US08041224B2
公开(公告)日：2011-10-18
申请号：US12137352
申请日：2008-06-11
申请人： Isaac Shpantzer , Jacob Khurgin
发明人： Isaac Shpantzer , Jacob Khurgin
IPC分类号： H04B10/00
CPC分类号： H01L27/1446 , H01L31/0232 , H01L31/0304 , H04B10/1121 , H04B10/118
摘要： A non-line of sight (NLOS) communications system and method are provided that implement orthogonal frequency, division multiplexing. A data generator produces a digital data stream, which is converted into M parallel frequency sub-carrier digital data streams (where M is an integer), each sub-carrier is encoded with data and an Inverse Fast Fourier Transform operation is applied, and an output signal is converted to an analog signal, which is imposed onto an optical beam generated by a light source. The beam is transmitted skywards at an elevation angle above the horizon in at least one direction. The beam is scattered due to Mie and Raleigh effects, forming a scattered waveform. At least a part of the scattered waveform is received by a receiver outputting an electrical signal, which enters a DSP unit. The DSP unit digitizes the electrical signal, performs Fourier transformation and recovers data from M sub-carrier signals.
摘要翻译：提供了一种实现正交频分复用的非视线（NLOS）通信系统和方法。数据生成器生成数字数据流，将其转换为M个并行频率副载波数字数据流（其中M为整数），每个子载波用数据编码，并应用快速傅里叶变换操作，输出信号被转换成模拟信号，该模拟信号被施加到由光源产生的光束上。光束在至少一个方向上以水平线上方的仰角向天空传播。由于米和罗利效应，光束散射，形成散射波形。散射波形的至少一部分由输入进入DSP单元的电信号的接收器接收。 DSP单元对电信号进行数字化，执行傅立叶变换，并从M个副载波信号中恢复数据。

67. 发明授权

US07502118B2 High sensitivity coherent photothermal interferometric system and method for chemical detection 有权
标题翻译：高灵敏度相干光热干涉系统及化学检测方法
公开(公告)号：US07502118B2
公开(公告)日：2009-03-10
申请号：US11677185
申请日：2007-02-21
申请人： Isaac Shpantzer
发明人： Isaac Shpantzer
IPC分类号： G01B9/02 , G01J3/45
CPC分类号： G01N21/171 , G01J3/02 , G01J3/0205 , G01J3/0224 , G01J3/45 , G01J9/04 , G01N2021/1793 , G02B26/06
摘要： A photo-thermal interferometric spectroscopy system is disclosed that provides information about a chemical at a remote location. A first light source assembly is included that emits a first beam. The first beam has one or more wavelengths that interact with the chemical and change a refractive index of the chemical. A second laser produces a second beam. The second beam interacts with the chemical resulting in a third beam with a phase change that corresponds with the change of the refractive index of the chemical. A detector system is positioned remote from the chemical to receive at least a portion of the third beam. An adaptive optics system at least partially compensates the light beam degradation caused by atmospheric turbulence. A focusing system is used to bring together the light passed through the chemical; the focusing system includes a multimode fiber for the light collection, The detector system provides information on a phase change in the third beam relative to the second beam that is indicative of at least one of, absorption spectrum and concentration of the chemical.
摘要翻译：公开了一种在远程位置提供关于化学品的信息的光热干涉光谱系统。包括发射第一光束的第一光源组件。第一光束具有与化学物质相互作用并改变化学物质折射率的一种或多种波长。第二激光器产生第二光束。第二束与化学物质相互作用，导致具有与化学物质的折射率变化相对应的相变的第三光束。检测器系统定位成远离化学品以接收第三束的至少一部分。自适应光学系统至少部分补偿由大气湍流引起的光束退化。聚焦系统用于将通过化学品的光汇集在一起; 聚焦系统包括用于光收集的多模光纤。检测器系统提供关于相对于第二光束的第三光束相变的信息，其指示化学品的吸收光谱和浓度中的至少一个。

68. 发明授权

US07426035B2 System and method for chemical sensing using trace gas detection 有权
标题翻译：使用痕量气体检测的化学感测系统和方法
公开(公告)号：US07426035B2
公开(公告)日：2008-09-16
申请号：US11561966
申请日：2006-11-21
申请人： Isaac Shpantzer
发明人： Isaac Shpantzer
IPC分类号： G01B9/02 , G01J3/45
CPC分类号： G01N21/171 , G01N21/3504 , G01N21/359 , G01N21/39 , G01N2021/1793
摘要： A system and method is proposed for chemicals detection such as explosives and others, which are based on sensing of trace gases associated with the chemical. This sensing includes detection of spectrum and relative concentration of the trace gases followed by the chemical identification based on these data. The sensing is based on photothermal interferometry method modified by implementation of coherent optical detection. This modification essentially improves the device performance by increasing its sensitivity and selectivity. Improved characteristics of the device allow remote sensing of the interrogated chemicals at a distance up to 1000 meters, which is crucial for explosives detection. The coherent optical detection is performed by a coherent receiver based on 90-degrees optical hybrid.
摘要翻译：提出了一种用于化学物质检测的系统和方法，例如爆炸物等，其基于与化学品相关的痕量气体的检测。该检测包括基于这些数据检测光谱和痕量气体的相对浓度，然后进行化学鉴定。该感测是基于相干光学检测实现修改的光热干涉法。该修改通过增加其灵敏度和选择性来实质地改善器件性能。改进的设备特性允许远程检测被询问的化学品，距离高达1000米，这对于爆炸物检测至关重要。相干光学检测由基于90度光学混合的相干接收机执行。

69. 发明授权

US07076169B2 System and method for orthogonal frequency division multiplexed optical communication 有权
公开(公告)号：US07076169B2
公开(公告)日：2006-07-11
申请号：US10087022
申请日：2002-02-28
申请人： Isaac Shpantzer , Yehouda Meiman , Michael Tseytlin , Olga Ritterbush , Aviv Salamon , Peter Feldman , Alper Demir , Peter Kinget , Nagendra Krishnapura , Jaijeet Roychowdhury
发明人： Isaac Shpantzer , Yehouda Meiman , Michael Tseytlin , Olga Ritterbush , Aviv Salamon , Peter Feldman , Alper Demir , Peter Kinget , Nagendra Krishnapura , Jaijeet Roychowdhury
IPC分类号： H04J14/06 , H04J4/00 , H04B10/00 , H04B10/04 , H04B10/06
CPC分类号： H04J14/005 , H04B10/2543 , H04B10/2563 , H04B10/2572 , H04B10/505 , H04B10/506 , H04B10/508 , H04J14/02
摘要： A system for optical communication send optical signals over a plurality of wavelength channels. Each wavelength channel comprises a number of orthogonal subchannel frequencies which are spaced apart from one another by a predetermined amount. Each of the subchannel frequencies is modulated with data from a data stream. The data modulation scheme splits a subchannel frequency code into H and V components, and further processes the components prior to modulation with data. The various data-modulated subchannels are then combined into a single channel for transmission. The received signals are detected and demodulated with the help of a symbol timing recovery module which establishes the beginning and end of each symbol. A polarization mode distortion compensation module at the receiver is used to mitigate the effects to polarization more distortion in the fiber.

70. 发明申请

US20050185191A1 Laser vibrometry with coherent detection 有权
标题翻译：激光振动测量与相干检测
公开(公告)号：US20050185191A1
公开(公告)日：2005-08-25
申请号：US11055547
申请日：2005-02-09
申请人： Isaac Shpantzer , Aviv Salamon , Pak Cho
发明人： Isaac Shpantzer , Aviv Salamon , Pak Cho
IPC分类号： G01B9/02
CPC分类号： G01H9/00 , G01H9/004
摘要： An optical system provides information about tangential vibration components of a surface at remote location. The optical system includes a light source assembly that emits first and second beams, each having one or more wavelengths and one or two polarizations. The first and second beams are directed to the interrogated surface. A detector system is positioned to detect a third beam formed by at least a portion of the first and second beams being reflected from the interrogated surface. The first, second and third beams having incident and reflection angles relative to the interrogated surface that do not lay in a same plane. The detector system positioned remotely from the interrogated surface, and providing information on a phase change in the third beam relative to the first and second beam. The phase change is indicative of at least one surface vibration vector component of the interrogated surface. The detector system is a 90 degree optical hybrid balanced detector with four photodiodes.
摘要翻译：光学系统提供关于远程位置处的表面的切向振动分量的信息。光学系统包括发射第一和第二光束的光源组件，每个光束具有一个或多个波长和一个或两个偏振。第一和第二光束被引导到被询问的表面。检测器系统被定位成检测由被询问的表面反射的第一和第二光束的至少一部分形成的第三光束。第一，第二和第三光束具有相对于被询问的表面的入射角和反射角度，其不处于同一平面内。检测器系统远离询问的表面定位，并且提供关于第三束相对于第一和第二光束的相位变化的信息。相变表示询问表面的至少一个表面振动矢量分量。检测器系统是具有四个光电二极管的90度光学混合平衡检测器。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式