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公开(公告)号：US08368582B2
公开(公告)日：2013-02-05
申请号：US12821614
申请日：2010-06-23
摘要： According to one embodiment, a Doppler radar apparatus includes a quadrature detection unit configured to quadrature-detect a received signal of a reflected pulse from an observation target, and generate time-series data including an in-phase component and a quadrature component, an interference judgment unit configured to judge whether an interference signal is mixed into the received signal based on the time-series data, a correction unit configured to correct a vector expressed by the in-phase component and the quadrature component such that variation with respect to time of a deviation angle of the vector continues when the interference judgment unit has judged that an interference signal is mixed into the received signal, and a calculation unit configured to calculate a Doppler velocity of the observation target based on an amount of variation with respect to time of the deviation angle of corrected vector.
摘要翻译： 根据一个实施例，多普勒雷达装置包括：正交检测单元，被配置为对来自观察目标的反射脉冲的接收信号进行正交检测，并且生成包括同相分量和正交分量的时间序列数据，干扰 判断单元，被配置为基于所述时间序列数据来判断干扰信号是否被混合到所述接收信号中;校正单元，被配置为校正由所述同相分量表示的矢量和所述正交分量，使得相对于所述时间序列数据的时间变化 当干扰判断单元已经判断出干扰信号被混合到接收信号中时，向量的偏离角度继续，以及计算单元，被配置为基于相对于时间的变化量来计算观察对象的多普勒速度 校正矢量的偏差角。
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公开(公告)号：US08704706B2
公开(公告)日：2014-04-22
申请号：US13036608
申请日：2011-02-28
申请人： Hideki Marui , Toshihisa Tanaka , Satoshi Kon , Fumihiko Mizutani , Masakazu Wada , Hiroshi Ishizawa
发明人： Hideki Marui , Toshihisa Tanaka , Satoshi Kon , Fumihiko Mizutani , Masakazu Wada , Hiroshi Ishizawa
IPC分类号： G01S13/00
CPC分类号： G01S13/958 , G01S7/414 , Y02A90/18
摘要： According to one embodiment, a radar return signal processing apparatus includes a detector, an estimation unit and an extraction unit. The detector detects an average Doppler frequency, a spectrum width, and a received power of each of echoes, from a radar return signal obtained repeatedly at regular intervals. The estimation unit estimates an optimum mixed density function by learning modeling a shaped of the frequency spectrum by calculating repeatedly a sum of density functions of each of the echoes. The extraction unit extracts information on any one of the echoes included in the radar return signal, from a parameter of the estimated mixed density function.
摘要翻译： 根据一个实施例，雷达返回信号处理装置包括检测器，估计单元和提取单元。 检测器从规则间隔重复获得的雷达返回信号中检测每个回波的平均多普勒频率，频谱宽度和接收功率。 估计单元通过重复计算每个回波的密度函数的和来学习对频谱的形状进行建模来估计最佳混合密度函数。 提取单元从估计的混合密度函数的参数中提取关于包括在雷达返回信号中的任何一个回波的信息。
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公开(公告)号：US08207889B2
公开(公告)日：2012-06-26
申请号：US12825697
申请日：2010-06-29
IPC分类号： G01S13/00
摘要： According to one embodiment, a dual polarization radar apparatus includes a received power calculation unit configured to calculate a horizontal polarization received power and a vertical polarization received power, the horizontal polarization received power indicating a power value of a horizontal polarization received signal reflected from an observation target, the vertical polarization received power indicating a power value of a vertical polarization received signal reflected from the observation target, a power ratio calculation unit configured to calculate a power ratio between the horizontal polarization received power and the vertical polarization received power, and an interference judgment unit configured to judge that an interference signal is mixed to the horizontal polarization received signal or the vertical polarization received signal when the power ratio is greater than a predetermined threshold value.
摘要翻译： 根据一个实施例，双极化雷达装置包括被配置为计算水平极化接收功率和垂直极化接收功率的接收功率计算单元，所述水平极化接收功率指示从观测反射的水平极化接收信号的功率值 目标，垂直极化接收功率，指示从观测对象反射的垂直极化接收信号的功率值;功率比计算单元，被配置为计算水平极化接收功率与垂直极化接收功率之间的功率比，以及干扰 判断单元，其被配置为当所述功率比大于预定阈值时，判定干扰信号与所述水平极化接收信号或所述垂直极化接收信号混合。
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公开(公告)号：US08416119B2
公开(公告)日：2013-04-09
申请号：US12825740
申请日：2010-06-29
IPC分类号： G01S13/95
摘要： According to one embodiment, a weather radar apparatus includes a transmitting/receiving unit configured to transmit a radar wave to an observation target and receive a reflected wave, a distribution unit configured to distribute a received signal of the reflected wave to a main path and at least another path, an extraction unit configured to extract, from a signal of the other path, an interference wave signal extracted from another radio station, and a removing unit configured to remove the interference wave signal extracted from a signal of the main path.
摘要翻译： 根据一个实施例，气象雷达装置包括：发射/接收单元，被配置为将雷达波发射到观测目标并接收反射波;分配单元，被配置为将反射波的接收信号分布到主路径 至少另一路径，提取单元，被配置为从另一路径的信号中提取从另一无线站提取的干扰波信号;以及去除单元，被配置为去除从主路径的信号提取的干扰波信号。
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公开(公告)号：US20110304501A1
公开(公告)日：2011-12-15
申请号：US13036608
申请日：2011-02-28
申请人： Hideki MARUI , Toshihisa Tanaka , Satoshi Kon , Fumihiko Mizutani , Masakazu Wada , Hiroshi Ishizawa
发明人： Hideki MARUI , Toshihisa Tanaka , Satoshi Kon , Fumihiko Mizutani , Masakazu Wada , Hiroshi Ishizawa
CPC分类号： G01S13/958 , G01S7/414 , Y02A90/18
摘要： According to one embodiment, a radar return signal processing apparatus includes a detector, an estimation unit and an extraction unit. The detector detects an average Doppler frequency, a spectrum width, and a received power of each of echoes, from a radar return signal obtained repeatedly at regular intervals. The estimation unit estimates an optimum mixed density function by learning modeling a shaped of the frequency spectrum by calculating repeatedly a sum of density functions of each of the echoes. The extraction unit extracts information on any one of the echoes included in the radar return signal, from a parameter of the estimated mixed density function.
摘要翻译： 根据一个实施例，雷达返回信号处理装置包括检测器，估计单元和提取单元。 检测器从规则间隔重复获得的雷达返回信号中检测每个回波的平均多普勒频率，频谱宽度和接收功率。 估计单元通过重复计算每个回波的密度函数的和来学习对频谱的形状进行建模来估计最佳混合密度函数。 提取单元从估计的混合密度函数的参数中提取关于包括在雷达返回信号中的任何一个回波的信息。
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公开(公告)号：US08259001B2
公开(公告)日：2012-09-04
申请号：US12700209
申请日：2010-02-04
申请人： Fumihiko Mizutani , Masakazu Wada
发明人： Fumihiko Mizutani , Masakazu Wada
IPC分类号： G01S13/00
CPC分类号： G01S13/951 , G01S13/426 , H01Q3/10 , H01Q3/30 , H01Q21/08 , Y02A90/18
摘要： A weather radar includes an antenna unit configured to transmit a radio wave from a plurality of antenna elements, and receive a reflected wave from a weather target by carrying out beam scanning in an elevation angle direction by phase control, a drive unit configured to control an elevation angle of an aperture of the antenna unit, and a controller configured to cause the antenna unit to carry out the beam scanning in a state where the aperture is faced to a point which presents a maximum range in the observational range by the drive unit, and direct, at a time point when the weather target is detected based on a received signal of the reflected wave, the aperture toward the weather target by the drive unit.
摘要翻译： 天气雷达包括：天线单元，被配置为从多个天线元件发送无线电波，并且通过相位控制执行仰角方向的波束扫描，从天气目标接收反射波;驱动单元，被配置为控制 天线单元的孔径的仰角，以及控制器，被配置为使得天线单元在孔径面对由驱动单元在观测范围内呈现最大范围的点的状态下执行光束扫描， 并且在基于反射波的接收信号检测到天气目标的时间点指示由驱动单元朝向天气目标的光圈。
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公开(公告)号：US08188906B2
公开(公告)日：2012-05-29
申请号：US12825819
申请日：2010-06-29
申请人： Fumihiko Mizutani , Masakazu Wada
发明人： Fumihiko Mizutani , Masakazu Wada
IPC分类号： G01S13/00
CPC分类号： G01S13/951 , G01S7/003 , G01S7/025 , Y02A90/18
摘要： According to one embodiment, a weather radar apparatus includes a transmitting/receiving unit configured to simultaneously transmit radar waves of a horizontally polarized wave and a vertically polarized wave and receive reflected waves, a signal processing unit configured to perform dual polarization observation based on a reception output from the transmitting/receiving unit and calculate a received power of each polarized wave, an observation parameter calculation unit configured to calculate, based on the received powers, a first observation parameter having a first spatial resolution, and a second observation parameter having higher correlation with a rainfall rate than that of the first observation parameter and a second spatial resolution lower than the first spatial resolution, and a rainfall rate calculation unit configured to synthetically determine the rainfall rate based on the first observation parameter and the second observation parameter.
摘要翻译： 根据一个实施例，气象雷达装置包括：发送/接收单元，被配置为同时发送水平偏振波和垂直极化波的雷达波并接收反射波;信号处理单元，被配置为基于接收执行双偏振观察 从发送/接收单元输出并计算每个极化波的接收功率;观测参数计算单元，被配置为基于接收到的功率计算具有第一空间分辨率的第一观测参数和具有较高相关性的第二观测参数 降雨率比第一观测参数降低，第二空间分辨率低于第一空间分辨率，降雨率计算单元，被配置为基于第一观测参数和第二观测参数综合确定降雨率。
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公开(公告)号：US08009080B2
公开(公告)日：2011-08-30
申请号：US12700228
申请日：2010-02-04
申请人： Fumihiko Mizutani , Masakazu Wada
发明人： Fumihiko Mizutani , Masakazu Wada
IPC分类号： G01S13/00
CPC分类号： G01S13/424 , G01S13/48 , G01S13/951 , H01Q3/2605 , H01Q25/00 , Y02A90/18
摘要： A weather radar includes an antenna unit of an active phased array system in which a plurality of antenna elements configured to transmit a radar pulse and receive a reflected pulse are arranged in a vertical direction, a transmission beam formation unit configured to divide an observation range in the elevation angle direction into a plurality of observation elevation angles, subdivide each observation elevation angle into a plurality of regions, assign a set of a plurality of regions not adjacent to each other to a pulse repetition interval (PRI), and form a fan-shaped transmission beam in the elevation angle direction for each of the regions in the set, and a reception beam formation unit configured to form a plurality pencil-shaped reception beams for each of the plurality of regions.
摘要翻译： 天气雷达包括有源相控阵系统的天线单元，其中配置成发送雷达脉冲并接收反射脉冲的多个天线元件被布置在垂直方向上，发射波束形成单元被配置为将观测范围 将仰角方向分割为多个观察仰角，将各观测仰角细分为多个区域，将不相邻的多个区域的集合分配给脉冲重复间隔（PRI），并形成扇区 - 以及接收波束形成单元，被配置为为多个区域中的每个区域形成多个笔形接收波束。
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公开(公告)号：US08451163B2
公开(公告)日：2013-05-28
申请号：US13013189
申请日：2011-01-25
申请人： Fumihiko Mizutani , Masakazu Wada
发明人： Fumihiko Mizutani , Masakazu Wada
IPC分类号： G01S13/95
CPC分类号： G01S13/95 , G01S13/426 , G01S2013/0245 , Y02A90/18
摘要： According to one embodiment, a weather radar apparatus includes an antenna unit, a drive unit, an adjustment unit, and a control unit. The antenna unit is configured to transmit radio waves from a plurality of antenna elements, perform beam scan in a direction of elevation angle by phase control, and receive waves reflected by a weather target. The drive unit is configured to drive an elevation angle and an azimuth angle of an aperture plane of the antenna unit. The adjustment unit is configured to adjust an observation range and an observation elevation angle by the antenna unit and the drive unit in accordance with a plurality of observation modes. The control unit is configured to set the observation mode based on a received signal of the reflected waves.
摘要翻译： 根据一个实施例，天气雷达装置包括天线单元，驱动单元，调整单元和控制单元。 天线单元被配置为从多个天线元件发送无线电波，通过相位控制在仰角的方向上执行波束扫描，并且接收由天气目标反射的波。 驱动单元被配置为驱动天线单元的孔径平面的仰角和方位角。 调整单元被配置为根据多个观察模式通过天线单元和驱动单元来调整观察范围和观察仰角。 控制单元被配置为基于反射波的接收信号设置观察模式。
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