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    • 21. 发明授权
    • Radio positioning system and coordinate configuring method
    • 无线定位系统和坐标配置方法
    • US08195201B2
    • 2012-06-05
    • US12620975
    • 2009-11-18
    • Hirohito MukaiTakashi FukagawaYoichi NakagawaToshiki Kanehara
    • Hirohito MukaiTakashi FukagawaYoichi NakagawaToshiki Kanehara
    • H04W24/00
    • H04W64/00
    • A radio positioning system includes a plurality of base stations and a radio terminal. Each of the base stations includes a reference signal generating portion which generates a reference signal for positioning, a transmission portion which transmits the reference signal, a reception portion which receives a signal from its outside, a positioning portion which calculates a position relative to the radio terminal or base station as a signal sender based on the received signal, and a reference signal return portion which receives a reference signal transmitted from another base station and returns the reference signal to the another base station. The radio terminal includes a terminal reception portion which receives the reference signal, and a terminal transmission portion which returns the received reference signal. A reference signal transmitted by a first base station of the base stations is received and returned by the reference signal return portion in a second base station, the returned reference signal is received by the reception portion in the first base station, and the positioning portion in the first base station measures a position relative to the second base station based on the received reference signal.
    • 无线电定位系统包括多个基站和无线电终端。 每个基站包括产生用于定位的参考信号的参考信号产生部分,发送参考信号的发送部分,从外部接收信号的接收部分,计算相对于无线电的位置的定位部分 终端或基站作为基于接收信号的信号发送器,以及参考信号返回部分,其接收从另一基站发送的参考信号,并将参考信号返回给另一个基站。 无线电终端包括接收参考信号的终端接收部分和返回接收的参考信号的终端传输部分。 由基站的第一基站发送的参考信号由第二基站中的参考信号返回部分接收并返回,返回的参考信号由第一基站中的接收部分接收,并且定位部分 第一基站基于接收到的参考信号来测量相对于第二基站的位置。
    • 23. 发明申请
    • RADIO POSITIONING SYSTEM AND COORDINATE CONFIGURING METHOD
    • 无线定位系统和协调配置方法
    • US20100167758A1
    • 2010-07-01
    • US12620975
    • 2009-11-18
    • Hirohito MukaiTakashi FukagawaYoichi NakagawaToshiki Kanehara
    • Hirohito MukaiTakashi FukagawaYoichi NakagawaToshiki Kanehara
    • H04W24/00
    • H04W64/00
    • A radio positioning system includes a plurality of base stations and a radio terminal. Each of the base stations includes a reference signal generating portion which generates a reference signal for positioning, a transmission portion which transmits the reference signal, a reception portion which receives a signal from its outside, a positioning portion which calculates a position relative to the radio terminal or base station as a signal sender based on the received signal, and a reference signal return portion which receives a reference signal transmitted from another base station and returns the reference signal to the another base station. The radio terminal includes a terminal reception portion which receives the reference signal, and a terminal transmission portion which returns the received reference signal. A reference signal transmitted by a first base station of the base stations is received and returned by the reference signal return portion in a second base station, the returned reference signal is received by the reception portion in the first base station, and the positioning portion in the first base station measures a position relative to the second base station based on the received reference signal.
    • 无线电定位系统包括多个基站和无线电终端。 每个基站包括产生用于定位的参考信号的参考信号产生部分,发送参考信号的发送部分,从外部接收信号的接收部分,计算相对于无线电的位置的定位部分 终端或基站作为基于接收信号的信号发送器,以及参考信号返回部分,其接收从另一基站发送的参考信号,并将参考信号返回给另一个基站。 无线电终端包括接收参考信号的终端接收部分和返回接收的参考信号的终端传输部分。 由基站的第一基站发送的参考信号由第二基站中的参考信号返回部分接收并返回,返回的参考信号由第一基站中的接收部分接收,并且定位部分 第一基站基于接收到的参考信号来测量相对于第二基站的位置。
    • 27. 发明授权
    • Radar apparatus
    • 雷达装置
    • US09134405B2
    • 2015-09-15
    • US13811641
    • 2011-07-14
    • Takaaki KishigamiYoichi NakagawaHirohito Mukai
    • Takaaki KishigamiYoichi NakagawaHirohito Mukai
    • G01S13/28G01S7/28G01S7/285
    • G01S13/284G01S7/2813G01S7/285G01S13/288
    • A radar apparatus transmits a radio frequency transmission signal from a transmitter antenna in a given transmission period, and receives a signal of a reflected wave reflected by a target via a receiver antenna. The radar apparatus includes a transmission signal generator that generates a first transmission signal obtained by modifying a code having a third sub-code sequence and a fourth sub-code sequence coupled to each other in a first transmission period, and generates a second transmission period obtained by modifying a code having a fifth sub-code sequence and a sixth sub-code sequence coupled to each other in a second transmission period, and a transmitter RF unit that converts the first and second transmission signals into radio frequency transmission signals, and transmits the radio frequency transmission signals from the transmitter antenna.
    • 雷达装置在给定的传输周期内从发射机天线发射射频信号,并通过接收机天线接收由目标反射的反射波的信号。 雷达装置包括:发送信号发生器,其生成通过在第一发送周期中修改具有彼此耦合的第三子码序列和第四子码序列的码而获得的第一发送信号,并且生成获得的第二发送周期 通过在第二发送周期中修改具有彼此耦合的第五子码序列和第六子码序列的码,以及将第一和第二发送信号转换为射频发送信号的发送器RF单元, 来自发射机天线的射频传输信号。
    • 28. 发明申请
    • RADAR DEVICE
    • 雷达设备
    • US20130113653A1
    • 2013-05-09
    • US13807189
    • 2011-07-01
    • Takaaki KishigamiHirohito MukaiYoichi Nakagawa
    • Takaaki KishigamiHirohito MukaiYoichi Nakagawa
    • G01S7/35
    • G01S7/35G01S7/285G01S7/4021G01S13/42G01S13/931
    • The disclosed technique includes transmitting a signal intermittently according to a transmission cycle having a predetermined transmission period and a non-transmission period; receiving the signal reflected from a target with reception antennas; and detecting the target from the reflected signal. A high-frequency transmission signal attenuated during the transmission period and a receipt signal received during the non-transmission period are combined together. A correlation value between a reference transmission signal and the receipt signal in the combined signal is calculated, and the amount of phase shift in an arbitrarily selected reception antenna is calculated from the correlation value of a reference reception antenna, and the correlation values of the other reception antennas. The phase component of the correlation value of the arbitrarily selected reception antenna is corrected on the basis of the amount of phase shift.
    • 所公开的技术包括根据具有预定发送周期和非发送周期的发送周期间歇地发送信号; 用接收天线接收从目标反射的信号; 并从反射信号中检测目标。 在发送期间衰减的高频发送信号和在非发送期间接收的接收信号组合在一起。 计算组合信号中的参考传输信号和接收信号之间的相关值,并根据参考接收天线的相关值计算任意选择的接收天线中的相移量,另一个的相关值 接收天线。 基于相移量来校正任意选择的接收天线的相关值的相位分量。
    • 29. 发明授权
    • MIMO communication device
    • MIMO通信设备
    • US08208981B2
    • 2012-06-26
    • US12593572
    • 2008-03-28
    • Takashi FukagawaYoichi NakagawaMasato Ukena
    • Takashi FukagawaYoichi NakagawaMasato Ukena
    • H04M1/00
    • H01Q1/2266
    • Provided is a MIMO communication device which can maintain the MIMO communication characteristic at a certain level regardless of the device installation position. The MIMO communication device (100) includes antenna elements (101-1, 101-2) as a first and a second antenna element which are arranged on a single straight line and an antenna element (102-1) or an antenna element (102-2) as a third antenna element which is arranged out of the straight line. A MIMO modulation unit (105) is connected to all the antenna elements. This assures that there exists a combination of antennas having other than 0 as a matrix expression of a channel estimation matrix in a propagation path between the MIMO communication device (100) and the communication partner regardless of the installation position of the MIMO communication device (100) with respect to a communication partner. As a result, it is possible to realize the MIMO communication device which can maintain the MIMO communication characteristic at a certain level or above regardless of the device installation position.
    • 提供了一种MIMO通信设备,其可以将MIMO通信特性保持在一定水平,而与设备安装位置无关。 MIMO通信设备(100)包括布置在单个直线上的天线元件(101-1,101-2)和第一天线元件和第二天线元件,天线元件(102-1)或天线元件(102) -2)作为布置在直线之外的第三天线元件。 MIMO调制单元(105)连接到所有天线元件。 这确保在MIMO通信设备(100)和通信对方之间的传播路径中存在除了0之外的天线的组合作为信道估计矩阵的矩阵表达式,而与MIMO通信设备(100)的安装位置无关 )相对于沟通伙伴。 结果,无论设备安装位置如何,都可以实现能够将MIMO通信特性保持在一定水平或更高水平的MIMO通信设备。
    • 30. 发明申请
    • ARRAY SIGNAL PROCESSING DEVICE
    • 阵列信号处理装置
    • US20120032850A1
    • 2012-02-09
    • US13263964
    • 2010-04-26
    • Yoichi NakagawaTakashi FukagawaHirohito Mukai
    • Yoichi NakagawaTakashi FukagawaHirohito Mukai
    • G01S3/14
    • G01S3/74H01Q1/246H01Q3/26H01Q21/08
    • Provided is an array signal processing device capable of, when a spatial averaging method is applied to array signal processing, reducing the number of antennas constituting an array antenna while making use of the spatial averaging method. In the array signal processing device (300), an array antenna (310) comprises four antennas (311-1 to 311-4) disposed at the four vertices of a parallelogram. Correlation calculation units (341-1, 2) calculate, based on a received signal, spatial correlation matrices for respective sub-array antenna (312-1) and sub-array antenna (312-2), the sub-array antenna (312-1) comprising the antennas (311-1, 3) disposed at the opposing two vertices and the antenna (311-2), the sub-array antenna (312-2) comprising the antennas (311-1, 3) and the antenna (311-4). An array rotation unit (342) converts a first spatial matrix of the calculated two spatial matrices to the complex conjugate thereof. A spatial averaging unit (343) averages the complex conjugate of the first spatial matrix and a second spatial matrix.
    • 提供了一种阵列信号处理装置,当空间平均方法应用于阵列信号处理时,能够在利用空间平均方法的同时减少构成阵列天线的天线的数量。 在阵列信号处理装置(300)中,阵列天线(310)包括设置在平行四边形的四个顶点的四个天线(311-1至311-4)。 相关计算单元(341-1,2)基于接收信号计算各子阵列天线(312-1)和子阵列天线(312-2)的空间相关矩阵,子阵列天线(312 -1)包括设置在相对的两个顶点处的天线(311-1,3)和天线(311-2),子阵列天线(312-2)包括天线(311-1,3)和 天线(311-4)。 阵列旋转单元(342)将所计算的两个空间矩阵的第一空间矩阵转换成其复共轭。 空间平均单元(343)对第一空间矩阵和第二空间矩阵的复共轭进行平均。