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公开(公告)号：US09547077B2
公开(公告)日：2017-01-17
申请号：US14403926
申请日：2013-05-21
Applicant: DENSO CORPORATION
Inventor： Yuu Watanabe , Koichiro Suzuki
CPC classification number: G01S13/50 , G01S13/38 , G01S13/584 , G01S13/72 , G01S13/931
Abstract: In a dual-frequency CW radar apparatus, first/second beat signals that include reflection components of radar waves conforming to transmission signals of first/second frequencies are generated for each antenna element and the generated signals are Fourier transformed. A power spectrum average of the beat signals is used as a basis for the detection of a peak frequency fp corresponding to the frequency of the reflection components. A second eigenvalue λ2 of a correlation matrix: Ry=(½)·[y1,y2][y1,y2]H is calculated, the matrix being based on first received vector y1/second received vector y2 having elements that are Fourier transformed values of the peak frequency fp. Based on the magnitude of the eigenvalue λ2, whether or not the reflection components corresponding to the peak frequency fp are synthetic components of the reflected waves from a plurality of targets is decided.
Abstract translation: 在双频CW雷达装置中，对于每个天线元件生成包括符合第一/第二频率的传输信号的雷达波的反射分量的第一/第二拍频信号，并且所生成的信号被傅里叶变换。 使用拍频信号的功率谱平均值作为检测与反射分量的频率对应的峰值频率fp的基础。 计算相关矩阵的第二特征值λ2：Ry =（½）·[y1，y2] [y1，y2] H，基于具有作为傅里叶变换值的元素的第一接收矢量y1 /第二接收矢量y2 的峰值频率fp。 基于特征值λ2的大小，判定与峰值频率fp对应的反射分量是否是来自多个目标的反射波的合成分量。
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公开(公告)号：US10031223B2
公开(公告)日：2018-07-24
申请号：US14591246
申请日：2015-01-07
Applicant: DENSO CORPORATION
Inventor： Yuu Watanabe , Takashi Watanabe
Abstract: In a vehicle control apparatus, a rear side detecting unit, mounted to an own vehicle, detects another vehicle that is present in a first area behind and to a side of the own vehicle. A time acquiring unit, mounted to the own vehicle, acquires a first time that is an estimated time at which a front approaching vehicle will arrive at the first area. The front approaching vehicle is another vehicle that is relatively nearing the own vehicle from ahead of the own vehicle. A sensitivity setting unit, mounted to the own vehicle, sets a detection sensitivity of the rear side detecting unit to the other vehicle in at least a part of the first area in such a manner that the detection sensitivity during a predetermined period set based on the first time is higher than the detection sensitivity during a remaining period other than the predetermined period.
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公开(公告)号：US09998196B2
公开(公告)日：2018-06-12
申请号：US15538713
申请日：2015-12-22
Applicant: DENSO CORPORATION
Inventor： Koutarou Mizunuma , Yuu Watanabe , Yasushi Kouno , Eiichi Okuno , Takuya Fuse , Hirokazu Ohyabu
CPC classification number: H04B7/0682 , H01L43/08 , H01Q3/2682 , H01Q3/34 , H01Q13/00 , H01Q21/065 , H01Q21/22 , H01Q21/29 , H01Q23/00 , H03B15/006 , H04B1/04 , H04B2001/045
Abstract: An antenna device includes: antennas; magnetic oscillation element units converting electrical energy to high-frequency power; and a modulator outputting electrical energy input from outside to at least two magnetic oscillation element units, with a time difference to differentiate phases of high-frequency power converted from electrical energy by at least two magnetic oscillation element units. The magnetic oscillation element units respectively include a pair of electrodes, and further include, between the pair of electrodes, a PIN layer, a free layer, and an intermediate layer. A resistance value of an element configured by the PIN, free and intermediate layers changes according to the angle between the magnetization direction of the PIN layer and the magnetization direction of the free layer. The antennas transmit electromagnetic waves to open space outside the magnetic oscillation element units with the supply of high-frequency power.
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公开(公告)号：US20150145714A1
公开(公告)日：2015-05-28
申请号：US14403926
申请日：2013-05-21
Applicant: DENSO CORPORATION
Inventor： Yuu Watanabe , Koichiro Suzuki
CPC classification number: G01S13/50 , G01S13/38 , G01S13/584 , G01S13/72 , G01S13/931
Abstract: In a dual-frequency CW radar apparatus, first/second beat signals that include reflection components of radar waves conforming to transmission signals of first/second frequencies are generated for each antenna element and the generated signals are Fourier transformed. A power spectrum average of the beat signals is used as a basis for the detection of a peak frequency fp corresponding to the frequency of the reflection components. A second eigenvalue λ2 of a correlation matrix: Ry=(½)·[y1,y2][y1,y2]H is calculated, the matrix being based on first received vector y1/second received vector y2 having elements that are Fourier transformed values of the peak frequency fp. Based on the magnitude of the eigenvalue λ2, whether or not the reflection components corresponding to the peak frequency fp are synthetic components of the reflected waves from a plurality of targets is decided.
Abstract translation: 在双频CW雷达装置中，对于每个天线元件生成包括符合第一/第二频率的传输信号的雷达波的反射分量的第一/第二拍频信号，并且所生成的信号被傅里叶变换。 使用拍频信号的功率谱平均值作为检测与反射分量的频率对应的峰值频率fp的基础。 计算相关矩阵的第二特征值λ2：Ry =（½）·[y1，y2] [y1，y2] H，基于具有作为傅里叶变换值的元素的第一接收矢量y1 /第二接收矢量y2 的峰值频率fp。 基于特征值λ2的大小，判定与峰值频率fp对应的反射分量是否是来自多个目标的反射波的合成分量。
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