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公开(公告)号：US20170307745A1
公开(公告)日：2017-10-26
申请号：US15473061
申请日：2017-03-29
Applicant: FUJITSU TEN LIMITED
Inventor： Isao MATSUI , Kenji OKA , Yasuhiro KURONO
IPC: G01S13/38
CPC classification number: G01S13/38 , G01S13/4454
Abstract: There is provided a radar device. A transmission unit includes a transmission antenna for transmitting a signal of a first frequency and a signal of a second frequency. A reception unit includes a first receiving antenna and a second receiving antenna for receiving a first signal obtained by bouncing the signal of the first frequency off a target, and a second signal obtained by bouncing the signal of the second frequency off the target. A control unit determines folding of a first phase difference, based on the first phase difference between the first signal received by the first receiving antenna and the first signal received by the second receiving antenna, a second phase difference between the second signal received by the first receiving antenna and the second signal received by the second receiving antenna, and a difference between the first phase difference and the second phase difference.
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公开(公告)号：US20130307718A1
公开(公告)日：2013-11-21
申请号：US13847620
申请日：2013-03-20
Applicant: FUJITSU TEN LIMITED
Inventor： Masatoshi AOKI , Hisateru ASANUMA , Yasuhiro KURONO
IPC: G01S13/50
CPC classification number: G01S13/50 , G01S7/354 , G01S7/4004 , G01S13/345 , G01S13/48 , G01S13/584 , G01S13/931 , G01S2013/9321 , G01S2013/9325 , G01S2013/9346 , G01S2013/935 , G01S2013/9375 , G01S2013/9378 , G01S2013/9385
Abstract: A radar device according to an embodiment includes a transmission unit, a reception unit, and a processing unit. The transmission unit emits a transmission wave relating to a frequency-modulated transmission signal. The reception unit receives a reflected wave acquired by reflecting the transmission wave on an object as a reception signal. The processing unit detects object data corresponding to the object from the reception signal, outputs the object data to the vehicle control device that controls the vehicle, and removes object data satisfying the removal condition that is a condition used for determining whether or not object data is to be removed from an output target for the vehicle control device and includes at least the distance and the relative speed of the object data with respect to the speed of the vehicle as conditions from output targets for the vehicle control device.
Abstract translation: 根据实施例的雷达装置包括发送单元，接收单元和处理单元。 发送单元发送与调频发送信号有关的发送波。 接收单元接收通过将对象的发送波反射而获得的反射波作为接收信号。 处理单元从接收信号检测与物体相对应的物体数据，将对象数据输出到控制车辆的车辆控制装置，并且除去作为用于确定对象数据是否为 从车辆控制装置的输出目标移除，并且至少包括相对于车辆速度的对象数据的距离和相对速度作为与车辆控制装置的输出目标的条件。
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公开(公告)号：US20180095173A1
公开(公告)日：2018-04-05
申请号：US15722422
申请日：2017-10-02
Applicant: FUJITSU TEN LIMITED
Inventor： Yasuhiro KURONO
CPC classification number: G01S13/931 , B60W30/08 , G01S7/352 , G01S13/343 , G01S13/42 , G01S13/584 , G01S17/42 , G01S2007/356 , G06K9/00805 , G08G1/16 , G08G1/165 , G08G1/166
Abstract: There is provided a radar device. A transmitting unit transmits chirp waves based on a transmission signal whose frequency continuously increases or decreases. A receiving unit outputs reception signals based on reflected waves of the chirp waves from a target. A transmission control unit controls the transmitting unit to transmit a predetermined number of the chirp waves in a first transmission period, and then transmit the chirp waves more than the predetermined number in a second transmission period. A generating unit generates beat signals from the transmission signal and the reception signals. A signal processing unit derives a distance to the target based on the beat signals generated in the first transmission period, determine a distance range limited based on the derived distance, and derive the distance and a relative velocity to the target based on the beat signals generated in the second transmission period within the distance range.
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公开(公告)号：US20170131385A1
公开(公告)日：2017-05-11
申请号：US15271783
申请日：2016-09-21
Applicant: FUJITSU TEN LIMITED
Inventor： Yasuhiro KURONO
CPC classification number: G01S7/352 , G01S13/343 , G01S13/42 , G01S13/584
Abstract: There is provided a radar device. A transmitting unit transmits a transmission signal in which an up period and a down period are repeated. A receiving unit receives reception signals from a target. A distance measuring unit computes the distance between the target and the radar device based on a reception signal corresponding to the up period, as an up-side distance, and computes the distance between the target and the radar device based on a reception signal corresponding to the down period, as a down-side distance. An aliasing determining unit determines whether velocity aliasing has occurred, based on the up-side distance and the down-side distance. A velocity measuring unit computes the relative velocity between the target and the radar device, based on the result of determination on velocity aliasing, and one of the reception signal of the up period and the reception signal of the down period.
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Patent Agency Ranking
公开(公告)号：US20160103207A1
公开(公告)日：2016-04-14
申请号：US14878846
申请日：2015-10-08
Applicant: FUJITSU LIMITED , FUJITSU TEN LIMITED
Inventor： Kazuo SHIRAKAWA , Yasuhiro KURONO
CPC classification number: G01S13/42 , G01S3/74 , G01S7/4021 , G01S13/931
Abstract: A receiving circuit uses a weight set by calibration to weight signals incident to receiving elements. A storing unit stores a measured value of a mode vector reflecting characteristics of the receiving circuit in an error-free state of the weight for the receiving circuit characteristics and further correlates and stores an incident signal angle estimated by an estimating unit, and for the error-free state, a calculation result of an evaluation value by an evaluation function capable of calculating the evaluation value, which varies according to the incident signal angle and error. A detecting unit calculates the evaluation value based on the stored measured value of the mode vector and the evaluation function and detects an occurrence of the error based on comparison of the calculated evaluation value and the stored evaluation value, when the estimated incident signal angle corresponds to a value close to the stored incident signal angle.
Abstract translation: 接收电路使用通过校准设置的权重来加权入射到接收元件的信号。 存储单元将反映接收电路的特性的模式矢量的测量值存储在用于接收电路特性的权重的无差错状态，并进一步关联并存储由估计单元估计的入射信号角度，并且对于误差 - 自由状态，通过能够计算评估值的评估函数的评估值的计算结果，其根据入射信号角度和误差而变化。 检测单元基于存储的模式矢量测量值和评估函数来计算评估值，并且当所估计的入射信号角对应于所述估计值时，基于所计算的评估值与所存储的评估值的比较来检测所述误差的发生 接近存储的入射信号角的值。
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公开(公告)号：US20150234041A1
公开(公告)日：2015-08-20
申请号：US14597815
申请日：2015-01-15
Applicant: FUJITSU TEN LIMITED
Inventor： Masatoshi AOKI , Yasuhiro KURONO
CPC classification number: G01S13/42 , B60W30/08 , B60W30/16 , G01S7/4004 , G01S13/345 , G01S13/726 , G01S13/931 , G01S2013/9375
Abstract: A radar apparatus pairs an angle peak of an up section in which a frequency of a transmission signal increases and an angle peak of a down section in which the frequency of the transmission signal decreases based on a reliability of a pair. The radar apparatus derives a first index that shows a highest level of the reliability of a pair in a plurality of pairs of the angle peaks and a second index that shows another level of the reliability of another pair, the second index being lower than the first index in the reliability but being higher than other indexes excluding the first index, and also determines a validity of the pair having the highest level of the reliability based on a comparison result between the first index and the second index.
Abstract translation: 雷达装置将发送信号的频率上升的上升部分的角度峰值与发送信号的频率基于一对的可靠性降低的下降部分的角度峰值进行配对。 所述雷达装置得到第一指标，其显示多对角度峰值中的一对的可靠性的最高水平，以及另一个指示另一对的可靠性水平的第二指标，所述第二指数低于所述第一指数 可靠性指数高于除第一指标之外的其他指标，并且还基于第一指数和第二指数之间的比较结果来确定具有最高可靠性水平的对的有效性。
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公开(公告)号：US20140062762A1
公开(公告)日：2014-03-06
申请号：US14016730
申请日：2013-09-03
Applicant: FUJITSU LIMITED , FUJITSU TEN LIMITED
Inventor： Yasuhiro KURONO , Kazuo SHIRAKAWA , Yoji OHASHI
IPC: G01S13/88
CPC classification number: G01S13/88 , G01S7/354 , G01S7/4026 , G01S13/42 , G01S13/584 , G01S13/931 , G01S2007/4034 , G01S2007/4091 , G01S2013/462 , G01S2013/9364 , G01S2013/9367 , G01S2013/9375 , G01S2013/9378
Abstract: In an in-vehicle radar device, as a vertical azimuth which is an azimuth of a target in a direction perpendicular to a ground surface, a real image vertical azimuth which is an azimuth of a real image existing above ground is calculated from a reflected wave generated when a transmission signal transmitted from a transmission antenna reflected from the target, and a virtual image vertical azimuth which is an azimuth of a virtual image existing underground is calculated from a reflected wave generated when the transmission signal transmitted from the transmission antenna is reflected from the target and reflected again from the ground surface. Next, in the in-vehicle radar device, an angle difference between the real image vertical azimuth and the virtual image vertical azimuth which are calculated is calculated, and a height of the target from the ground surface is calculated using the calculated angle difference.
Abstract translation: 在车载雷达装置中，作为垂直于地面的方向的目标方位角的垂直方位角，从反射波算出作为地面上存在的实像的方位角的实像垂直方位角 当从发射天线发射的发射信号反射时产生的反射波计算从从目标反射的发射天线发射的发射信号和作为地下虚拟图像的方位角的虚像垂直方位角产生的反射波， 目标并再次从地面反射出来。 接下来，在车载雷达装置中，计算计算出的实际图像垂直方位角与虚拟图像垂直方位角之间的角度差，并且使用计算出的角度差来计算目标与地面的高度。
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公开(公告)号：US20130249731A1
公开(公告)日：2013-09-26
申请号：US13793225
申请日：2013-03-11
Applicant: FUJITSU TEN LIMITED
Inventor： Yasuhiro KURONO , Hisateru ASANUMA , Shinichi SHIBATA
IPC: G01S13/42
CPC classification number: G01S13/42 , G01S7/412 , G01S13/345 , G01S13/931 , G01S2007/403 , G01S2013/0263 , G01S2013/9375
Abstract: A radar apparatus includes a retrieval unit, an estimation unit, a calculation unit, and a determination unit. The retrieval unit retrieves a strong reflection object based on a signal strength which a frequency spectrum of a beat signal generated by mixing a transmission signal which is frequency-modulated and emitted and a reception signal which is formed in the transmission signal is reflected on a target indicates. The estimation unit estimates an estimation orientation which is an orientation of a target assumed to be present around the strong reflection object, based on a relative distance to the strong reflection object. The calculation unit calculates power which is the signal strength for the estimation orientation by generating an orientation spectrum in the estimation orientation based on a frequency component corresponding to the relative distance. The determination unit determines whether there is the target in the estimation orientation based on the power.
Abstract translation: 雷达装置包括检索单元，估计单元，计算单元和确定单元。 检索单元基于信号强度检索强反射对象，该信号强度通过混合被调频发送的发送信号和在发送信号中形成的接收信号而产生的差频信号的频谱被反映在目标 表示。 估计单元基于与强反射物体的相对距离来估计假定存在于强反射物体周围的目标的取向的估计方向。 计算单元基于与相对距离相对应的频率分量，通过在估计取向中生成取向谱来计算作为估计取向的信号强度的功率。 确定单元基于功率来确定估计方向上是否存在目标。
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公开(公告)号：US20160154103A1
公开(公告)日：2016-06-02
申请号：US14934751
申请日：2015-11-06
Applicant: FUJITSU TEN LIMITED
Inventor： Takumi MORIUCHI , Yasuhiro KURONO , Hiroki ISHIKAWA
CPC classification number: G01S13/931 , G01S13/345 , G01S13/726 , G01S2007/356 , G01S2013/9353
Abstract: A radar device generates pair data items by associating angle peaks of an up section and angle peaks of a down section. Thereafter, on the basis of a plurality of specific pair data items whose positions are close to each other in an angle direction and which are substantially the same in the position in a distance direction intersecting with the angle direction and are substantially the same in relative speed, the radar device derives one representative pair data item. The derivation of one representative pair data item is performed before continuity determination of a continuity determining unit at the same process timing is performed.
Abstract translation: 雷达装置通过将上部的角度峰值和下降部分的角度峰值相关联来产生对数据项目。 此后，基于在角度方向上位置彼此接近并且在与角度方向相交的距离方向上的位置基本相同的多个特定对数据项，并且在相对速度上基本相同 雷达装置产生一个代表性的对数据项。 在执行相同处理定时的连续性确定单元的连续性确定之前执行一个代表性对数据项的推导。
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