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公开(公告)号：EP2717067A1
公开(公告)日：2014-04-09
申请号：EP12793629.2
申请日：2012-05-25
CPC分类号： G01S13/06 , G01S7/023 , G01S7/28 , G01S7/42 , G01S13/003 , G01S13/02 , G01S13/284 , G01S13/288 , G01S13/42 , G01S13/878 , G01S2007/2886
摘要： A first radar transmitter and a second radar transmitter transmit a first modulation signal and a second modulation signal which are generated by repeating a predetermined time of code sequences, each of which has a predetermined code length, using a first code width and a second code width, respectively. An A/D converter converts the modulation signal into a discrete signal in a sampling cycle shorter than a difference between the first code width and the second code width. A positioning section separates a plurality of reception signals using a first correlation value based on outputs from the A/D converter and a first delay section corresponding to the first code width and a second correlation value based on outputs from the A/D converter and a second delay section corresponding to the second code width.
摘要翻译： 第一雷达发射机和第二雷达发射机发送第一调制信号和第二调制信号，所述第一调制信号和第二调制信号是通过使用第一码宽和第二码宽重复预定时间的码序列而生成的，所述码序列中的每一个具有预定的码长 ， 分别。 A / D转换器以比第一代码宽度和第二代码宽度之间的差更短的采样周期将调制信号转换为离散信号。 定位部分基于来自A / D转换器和对应于第一代码宽度的第一延迟部分的输出以及基于来自A / D转换器的输出的第二相关值，使用第一相关值分离多个接收信号， 第二延迟部分对应于第二代码宽度。
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公开(公告)号：EP2600167A1
公开(公告)日：2013-06-05
申请号：EP11811966.8
申请日：2011-06-03
CPC分类号： G01S7/34 , G01S7/28 , G01S7/2922 , G01S13/0209 , G01S13/42
摘要： An influence of signal distortion which occurs during adjustment of the gain of a receiving unit of a radar apparatus is reduced, and degradation of a reception signal is improved. A pulse signal is produced as a transmission signal in a pulse generating section 101, and repetitively transmitted from an antenna 104 at constant time intervals. A reception signal which is received through an antenna 106, and which includes a reflective wave from an object is amplified in an amplifier 107, and gain-adjusted in a variable attenuator 108. Thereafter, a distance detecting section 111 detects a reception pulse of the reflected wave, and calculates the distance to the object. The variable attenuator 108 attenuates the reception signal by a gain which is adjusted in accordance with a gain control signal supplied from a gain adjusting section 113. The gain (attenuation amount) of the variable attenuator 108 is controlled so as to be maximum immediately after the pulse signal is transmitted, and to be reduced with elapse of time. Based on a gain adjustment timing signal supplied from a timing adjusting section 112, a gain adjustment timing when the attenuation amount is changed is made different for each transmission of the pulse signal.
摘要翻译： 在调整雷达装置的接收单元的增益期间出现的信号失真的影响被减小，并且接收信号的劣化得到改善。 脉冲信号作为发送信号在脉冲发生部分101中产生，并以恒定的时间间隔从天线104重复发送。 通过天线106接收到的包括来自物体的反射波的接收信号在放大器107中被放大，并在可变衰减器108中进行增益调整。此后，距离检测部分111检测到 反射波，并计算到物体的距离。 可变衰减器108通过根据从增益调整部分113提供的增益控制信号调整的增益来衰减接收信号。可变衰减器108的增益（衰减量）被控制为在紧接着 脉冲信号被发送，随着时间的经过而减少。 基于从定时调整部112提供的增益调整定时信号，对于脉冲信号的每次发送，使衰减量变化时的增益调整定时不同。
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3.发明公开
公开(公告)号：EP3819669A1
公开(公告)日：2021-05-12
申请号：EP19839834.9
申请日：2019-07-12
发明人： LIU, Weijie , YASUGI, Makoto , NAKAGAWA, Yoichi
摘要： In order to enable accurate object determination based on radar data by using a machine learning model, an object determination method involves acquiring radar data including information records of a radar reflection intensity and a velocity for each orientation and each distance; generating a radar detection image in which each pixel has a plurality of channels for containing data records of a radar reflection intensity, a velocity, and a distance, respectively, the data records corresponding to the position of the pixel; and by using a machine learning model for image recognition trained for object determination, acquiring an object determination result determined based on the radar detection image. In particular, the method includes, based on position data of an object area detected from the radar data of an entire observation area, extracting radar data of the object area from the radar data of the entire observation area; and generating the radar detection image of the object area based on the radar data of the object area.
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公开(公告)号：EP2977784B1
公开(公告)日：2018-08-01
申请号：EP14770032.2
申请日：2014-03-03
CPC分类号： G01S13/0209 , G01S7/2813 , G01S7/282 , G01S7/42 , G01S13/24 , G01S13/87 , G01S13/931 , G01S2013/9375
摘要： First and second radar modules include channel controllers which set different frequency bands for first and second carrier waves, respectively, and first radar transmitter and receiver which transmit radio-frequency first and second radar transmission signals generated using prescribed first and second transmission code sequences and the first and second carrier waves, which receive first and second radar reflection signals produced as a result of reflection of the first and second radar transmission signals by a target, and which convert them into baseband first and second reception signals. A signal processor performs prescribed combining processing on outputs of the first and second radar modules. The first and second radar transmission signals partially overlap with each other in main beam directivity.
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公开(公告)号：EP2626720A1
公开(公告)日：2013-08-14
申请号：EP11830353.6
申请日：2011-09-29
IPC分类号： G01S13/28
CPC分类号： G01S13/284 , G01S7/023 , G01S13/222 , G01S13/288 , G01S13/91
摘要： In order to maintain low range sidelobe characteristics in signals of a reflected wave from a target even when the target moves, and to reduce interference among a plurality of sector radars, a first sector radar generates signals which are obtained by modulating a first code sequence at a first transmission cycle, obtained by modulating a second code sequence at a second transmission cycle, obtained by modulating the first code sequence at a third transmission cycle, and obtained by modulating the second code sequence at a fourth transmission cycle respectively. A second sector radar generates signals which are obtained by modulating the second code sequence at the first transmission cycle, obtained by modulating, at the second transmission cycle, a third code sequence having the opposite polarity to the first code sequence, obtained by modulating, at the third transmission cycle, a fourth code sequence having the opposite polarity to the second code sequence, and obtained by modulating the first code sequence at the fourth transmission cycle respectively. The first and second sector radars respectively transmit the generated signals from first and second transmission antennae.
摘要翻译： 为了即使在目标移动时也维持来自目标的反射波的信号的低范围旁瓣特性，并且为了减少多个扇区雷达之间的干扰，第一扇区雷达生成通过将第一码序列调制到 通过以第三传输周期对第一码序列进行调制而获得的第二传输周期对第二码序列进行调制而获得的第一传输周期，以及通过在第四传输周期对第二码序列进行调制而获得的第一传输周期。 第二扇区雷达产生通过在第一发送周期调制第二码序列而获得的信号，该第二发送周期是通过在第二发送周期调制具有与第一码序列相反极性的第三码序列而获得的， 第三传输周期，第四码序列，其具有与第二码序列相反的极性，并且通过分别在第四传输周期对第一码序列进行调制而获得。 第一和第二扇区雷达分别从第一和第二发射天线发射产生的信号。
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公开(公告)号：EP2613174A1
公开(公告)日：2013-07-10
申请号：EP11821267.9
申请日：2011-08-16
IPC分类号： G01S13/28
CPC分类号： G01S13/284 , G01S7/282 , G01S13/288 , G01S13/582 , G01S13/931 , G01S2007/2886
摘要： A radar device is provided in which, even when a measurement target moves, the low range side lobe characteristics is maintained, and impairment of the separation performance in detection of a plurality of targets is suppressed. A high-frequency transmission signal is transmitted from a transmission antenna with a predetermined transmission period, and a signal of a reflected wave reflected from a target is received by a reception antenna. A code generator generates a first code sequence and second code sequence that constitute a pair of complementary codes. A first modulator modulates the first code sequence to generate a first transmission signal. A second modulator modulates the second code sequence to generate a second transmission signal. A quadrature modulator performs quadrature modulation by using the generated first and second transmission signals. The high-frequency transmission signal is generated from a signal that is quadrature modulated, and transmitted from the transmission antenna.
摘要翻译： 提供一种雷达装置，其中，即使当测量目标移动时，也维持低范围旁瓣特性，并且抑制了检测多个目标时的分离性能的损害。 高频发送信号以规定的发送期间从发送天线发送，接收天线接收从目标反射的反射波的信号。 码发生器产生构成一对互补码的第一码序列和第二码序列。 第一调制器调制第一码序列以产生第一传输信号。 第二调制器调制第二码序列以产生第二传输信号。 正交调制器通过使用生成的第一和第二传输信号来执行正交调制。 高频发送信号由正交调制后的信号生成，从发送天线发送。
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公开(公告)号：EP2613173A1
公开(公告)日：2013-07-10
申请号：EP11821266.1
申请日：2011-08-16
CPC分类号： G01S13/284 , G01S13/288 , G01S13/931
摘要： Provided is a radar apparatus wherein measurement distance ranges are extended and the measurement time required for the measurement of all the measurement distance ranges is shortened compared to a conventional apparatus. The radar apparatus transmits a high-frequency transmission signal from a transmitting antenna in a predetermined transmission period, and receives, with a receiving antenna, a signal of a reflective wave reflected by a target. Given a first code sequence of a first code length, a second code sequence of a second code length which is longer than the first code sequence, and a third code sequence obtained by inverting each code of the first code sequence, a first transmission signal obtained by modulating the first code sequence, a second transmission signal obtained by modulating the second code sequence, a third transmission signal obtained by modulating the third code sequence and a fourth transmission signal obtained by modulating the second code sequence are generated in a first transmission period, a second transmission period, a third transmission period and a fourth transmission period, respectively. The first and third transmission periods are shorter than the second and fourth transmission periods. Each transmission signal thus generated is converted to the high-frequency transmission signal and transmitted from the transmitting antenna.
摘要翻译： 本发明提供一种雷达装置，与现有装置相比，测量距离范围扩大，测量全部测量距离范围所需的测量时间缩短。 雷达装置在规定的发送期间内从发送天线发送高频发送信号，并利用接收天线接收由目标反射的反射波的信号。 给定第一代码长度的第一代码序列，比第一代码序列长的第二代码长度的第二代码序列和通过反转第一代码序列的每个代码而获得的第三代码序列，获得第一发送信号 通过对第一码序列进行调制，在第一传输周期内生成通过对第二码序列进行调制而获得的第二传输信号，通过对第三码序列进行调制而获得的第三传输信号以及通过对第二码序列进行调制而获得的第四传输信号， 第二传输时段，第三传输时段和第四传输时段。 第一和第三发送周期比第二和第四发送周期短。 这样产生的每个发送信号被转换成高频发送信号并从发送天线发送。
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公开(公告)号：EP1548968B1
公开(公告)日：2013-04-03
申请号：EP04710503.6
申请日：2004-02-12
CPC分类号： H04L27/20 , H04L25/0248 , H04L25/03343
摘要： A radio station (101) equipped with an array antenna, when transmitting an information symbol sequence to a particular radio station (102), uses a plurality of vectors, which are produced based on a propagation channel characteristic (103) established between these radio stations, to simultaneously transmit a plurality of symbol sequences, which include the information symbol sequence, by means of vector multiplexing, thereby causing the particular radio station (102) to receive the information symbol sequence, while causing other radio stations (200) of different propagation channels to simultaneously receive a part or all the plurality of symbol sequences. Thus, when data is transmitted to a particular radio station via a radio communication channel, the concealment of information can be secured with a high level of security.
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公开(公告)号：EP3779507A1
公开(公告)日：2021-02-17
申请号：EP19784717.1
申请日：2019-03-28
发明人： LIU, Weijie , YASUGI, Makoto , NAKAGAWA, Yoichi
摘要： In order to ensure that a proper clustering operation is performed on measurement records of one or more radars, a processor 23 in an object detection device 3 is configured to acquire settings data for one or more radar grids 41 for measurement, each radar grid 41 being set for a measurement area 18 of a corresponding one of the radars and consisting of a plurality of radar cells R; acquiring settings data for a processing grid 45 for clustering operations, the processing grid 45 being set for the one or more measurement areas 18 and consisting of a plurality of processing cells F; calculate, for each processing cell, one or more likelihoods associated with measurements of one or more related radar cells R based on distances between the processing cell F and the one or more related radar cells R; calculate a grid value of each of the processing cells F in the processing grid 45 based on the one or more likelihoods; and perform a clustering operation on each processing cell based on (i) distances between the processing cell F and one or more different processing cells (F), and/or (ii) the grid values of the processing cell and the one or more different processing cells.
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公开(公告)号：EP3220159A1
公开(公告)日：2017-09-20
申请号：EP17158270.3
申请日：2017-02-28
发明人： LIU, Weijie , NAKAGAWA, Yoichi
CPC分类号： G01S13/28 , G01S7/2921 , G01S13/282 , G01S13/288 , G01S13/34 , G01S13/345 , G01S13/931 , G01S2007/2886
摘要： Frequency analysis of each of a plurality of reception antennas and each of reception signals received by the plurality of reception antennas is performed, a power spectrum is calculated for each of the reception antennas, a standard deviation indicating a degree of conformity in a peak of the power spectrum among the plurality of reception antennas is calculated, the power spectra are corrected with use of the standard deviation, a peak is detected based on the corrected power spectra, and a target object is detected based on the detected peak.
摘要翻译： 对由多个接收天线接收到的多个接收天线和接收信号中的每一个进行频率分析，计算每个接收天线的功率谱，指示该接收天线的峰值中的一致程度的标准偏差 计算多个接收天线中的功率谱，使用标准偏差校正功率谱，基于校正的功率谱检测峰值，并且基于检测到的峰值检测目标物体。
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