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公开(公告)号：US08195201B2
公开(公告)日：2012-06-05
申请号：US12620975
申请日：2009-11-18
IPC分类号： H04W24/00
CPC分类号： H04W64/00
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20100167758A1
公开(公告)日：2010-07-01
申请号：US12620975
申请日：2009-11-18
IPC分类号： H04W24/00
CPC分类号： H04W64/00
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20120032850A1
公开(公告)日：2012-02-09
申请号：US13263964
申请日：2010-04-26
IPC分类号： G01S3/14
摘要： 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.
摘要翻译： 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。
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4.发明申请RADIO ARRIVAL DIRECTION ESTIMATION DEVICE AND RADIO ARRIVAL DIRECTION ESTIMATION METHOD 有权无线电到达方向估计装置和无线电方向估计方法公开(公告)号：US20110133988A1
公开(公告)日：2011-06-09
申请号：US13056825
申请日：2009-09-04
IPC分类号： G01S3/12
摘要： A radio arrival direction estimation device that accurately estimates the arrival direction of radio waves from a desired tag, even when there are multiple antennas disposed at short intervals. When ID detection timing is provided from a timing detector (114) to a switch (201), relative amplitude/phase data related to the tag ID digital value “1” or “0” is obtained by an arrival direction estimation unit (125). One relative amplitude/phase datum is formed for each unit cycle in a first adder (202), which adds the relative amplitude/phase datum related to the tag ID digital value “1” to each element in a matrix, and a second adder (203), which adds the relative amplitude/phase datum related to the tag ID digital value “0” to each element in a matrix. An OOK signal causes an arithmetic unit (204) to subtract the relative amplitude/phase data produced by the second adder (203) from the relative amplitude/phase data produced by the first adder (202), and extract the phase of a signal corresponding to the phase of the digital value “1.”
摘要翻译： 无线电到达方向估计装置，即使当以短间隔布置多个天线时，也能够从期望的标签精确地估计无线电波的到达方向。 当从定时检测器（114）向开关（201）提供ID检测定时时，通过到达方向估计单元（125）获得与标签ID数字值“1”或“0”有关的相对幅度/相位数据， 。 在第一加法器（202）中为每个单位周期形成一个相对幅度/相位数据，其将与标签ID数字值“1”相关的相对幅度/相位数据与矩阵中的每个元素相加，以及第二加法器 203），其将与标签ID数字值“0”相关的相对幅度/相位数据添加到矩阵中的每个元素。 OOK信号使算术单元（204）从由第一加法器（202）产生的相对幅度/相位数据中减去由第二加法器（203）产生的相对幅度/相位数据，并且提取相应的信号的相位 到数字值“1”的阶段。
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公开(公告)号：US08659477B2
公开(公告)日：2014-02-25
申请号：US13059363
申请日：2009-10-09
CPC分类号： H04W64/006 , G01S13/765 , G01S2013/466 , H04L27/02 , H04W24/00 , H04W88/08
摘要： Provided are a distance measuring device and a distance measuring method which can easily distinguish a reflected signal from a desired tag from an unnecessary wave so as to improve the distance measuring accuracy even when IR-UWB is used for measuring a distance. The method uses a reader ID indicated by a code string formed by P bits (P is a natural number) for identifying a base station and a tag ID indicated by a code string formed by Q bits (Q is a natural number) for identifying a radio terminal. The method generates a unique word containing P pulses, each of which is ON/OFF-modulated depending on whether each of P bits indicating the reader ID is 1 or 0. The method generates a frame containing 2 M unique words and a burst containing Q frames. The method further outputs a transmission signal containing a plurality of bursts. A radio terminal Amplitude Shift Keying (ASK)—modulates the transmission signal depending on whether each of the Q bits indicating the tag ID is 1 or 0. The ASK-modulated signal is sampling-received at timings of different phases by 1/M (M is an integer not smaller than 1) of the transmission clock cycle.
摘要翻译： 提供了一种距离测量装置和距离测量方法，其可以容易地将来自所需标签的反射信号与不需要的波分离，以便即使当使用IR-UWB来测量距离时也能够提高距离测量精度。 该方法使用由用于识别基站的P位（P是自然数）形成的代码串所指示的读取器ID以及由用于识别基站的Q位（Q是自然数）形成的代码串所指示的标签ID 无线电终端。 该方法生成包含P个脉冲的唯一字，每个脉冲根据指示读取器ID的P位中的每一个是1还是0来进行ON / OFF调制。该方法生成包含2M个唯一字和包含Q的突发的帧 框架。 该方法还输出包含多个突发的发送信号。 无线电终端振幅键控（ASK） - 根据指示标签ID的每个Q位是否为1或0来调制发送信号。ASK调制信号在不同相位的定时采样1 / M（ M是不小于1）的传输时钟周期的整数。
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6.发明授权Radio arrival direction estimation device and radio arrival direction estimation method 有权无线电到达方向估计装置和无线电到达方向估计方法公开(公告)号：US08400357B2
公开(公告)日：2013-03-19
申请号：US13056825
申请日：2009-09-04
IPC分类号： G01S5/02
摘要： A radio arrival direction estimation device that accurately estimates the arrival direction of radio waves from a desired tag, even when there are multiple antennas disposed at short intervals. When ID detection timing is provided from a timing detector (114) to a switch (201), relative amplitude/phase data related to the tag ID digital value “1” or “0” is obtained by an arrival direction estimation unit (125). One relative amplitude/phase datum is formed for each unit cycle in a first adder (202), which adds the relative amplitude/phase datum related to the tag ID digital value “1” to each element in a matrix, and a second adder (203), which adds the relative amplitude/phase datum related to the tag ID digital value “0” to each element in a matrix. An OOK signal causes an arithmetic unit (204) to subtract the relative amplitude/phase data produced by the second adder (203) from the relative amplitude/phase data produced by the first adder (202), and extract the phase of a signal corresponding to the phase of the digital value “1.”
摘要翻译： 无线电到达方向估计装置，即使当以短间隔布置多个天线时，也能够从期望的标签精确地估计无线电波的到达方向。 当从定时检测器（114）向开关（201）提供ID检测定时时，通过到达方向估计单元（125）获得与标签ID数字值1或0相关的相对幅度/相位数据。 在第一加法器（202）中为每个单位周期形成一个相对幅度/相位数据，其将与标签ID数字值1相关的相对幅度/相位数据与矩阵中的每个元素相加，并且第二加法器（203） ，其将与标签ID数字值0相关的相对幅度/相位数据添加到矩阵中的每个元素。 OOK信号使算术单元（204）从由第一加法器（202）产生的相对幅度/相位数据中减去由第二加法器（203）产生的相对幅度/相位数据，并且提取相应的信号的相位 到数字值1的相位。
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7.发明申请RADIO TERMINAL DEVICE, RADIO BASE STATION DEVICE, RADIO RANGING SYSTEM, AND RADIO RANGING METHOD 有权无线终端设备，无线基站设备，无线范围系统和无线范围方法公开(公告)号：US20120044974A1
公开(公告)日：2012-02-23
申请号：US13266749
申请日：2010-04-20
CPC分类号： G01S13/767
摘要： Disclosed are a radio terminal device and the like, which achieve an improvement in the accuracy of ranging between a UWB reader and a UWB tag regardless of whether an active method or a semi-passive method. In a terminal (300), a timing control unit (340) outputs, to a transmission amplifier (350), a control signal for performing on-off control such that on the basis of the reception timing of a pulse signal transmitted from a base station (200) and a representative value of a circuit delay time required from when a reception pulse signal is received until a transmission pulse signal generated in response to a detection signal of the reception pulse signal is transmitted, the transmission amplifier (350) amplifies a reradiation pulse generated in response to a detection signal of the pulse signal transmitted from the base station (200); and a re-reradiation pulse generated in response to a detection signal of the reradiation pulse.
摘要翻译： 公开了无线终端装置等，无论是主动方式还是半被动方式，均能够实现UWB读取器与UWB标签之间的测距精度的提高。 在终端（300）中，定时控制单元（340）向发送放大器（350）输出用于执行开 - 关控制的控制信号，以便基于从基站发送的脉冲信号的接收定时 站（200）和从接收脉冲信号接收直到响应于接收脉冲信号的检测信号产生的发送脉冲信号所需的电路延迟时间的代表值，发送放大器（350）放大一个 响应于从基站（200）发送的脉冲信号的检测信号产生的再放射脉冲; 以及响应于所述再辐射脉冲的检测信号而产生的再放射脉冲。
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8.发明申请公开(公告)号：US20100159842A1
公开(公告)日：2010-06-24
申请号：US12486707
申请日：2009-06-17
申请人： Takashi FUKAGAWA , Hirohito Mukai , Yoichi Nakagawa , Tadao Inoue
发明人： Takashi FUKAGAWA , Hirohito Mukai , Yoichi Nakagawa , Tadao Inoue
IPC分类号： H04B17/00
CPC分类号： G01S5/0226 , G01S11/02 , G01S13/76
摘要： A wireless distance measurement system and a wireless distance measurement method that measure the distance between a base station and a terminal without clock synchronization between a plurality of base stations, and without requiring input of the position relationships between a plurality of base stations. Clock phase shift section (210) shifts a clock that is used to generate transmission pulses is phase-shifted by a specific amount every 100 nanoseconds, and A/D conversion section (211) converts a signal re-radiated from terminal (103) to a digital signal using the shifted clock. Correlation calculation section (212) performs correlation calculation between the digital signal and the transmission pulse and creates a delay profile by adding digital signals in the shifted phases between same phases, and incoming wave detection section (213) detects peaks of the pulses in the delay profile. Distance calculation section (214) calculates the distance to terminal (103) based on the timings to transmit the pulses and the timings to detect peaks of the pulses.
摘要翻译： 无线距离测量系统和无线距离测量方法，其测量基站和终端之间的距离，而不需要在多个基站之间的位置关系的输入，而不需要在多个基站之间进行时钟同步。 时钟相移部（210）移位用于产生发送脉冲的时钟每100纳秒相移特定量，A / D转换部（211）将从终端（103）重新发射的信号转换为 使用移位时钟的数字信号。 相关计算部（212）进行数字信号与发送脉冲之间的相关运算，并通过在相位相位之间移位移相的数字信号相加产生延迟分布，入射波检测部（213）检测出延迟中的脉冲的峰值 个人资料 距离计算部（214）基于发送脉冲的定时和检测脉冲峰值的定时，计算与终端（103）的距离。
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公开(公告)号：US08665153B2
公开(公告)日：2014-03-04
申请号：US13263964
申请日：2010-04-26
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US08165248B2
公开(公告)日：2012-04-24
申请号：US12639754
申请日：2009-12-16
IPC分类号： H04L27/06
CPC分类号： H04B17/318 , H04B17/27
摘要： A wireless distance measurement system and wireless terminal improve the accuracy of distance measurement when the UWB communication scheme is used. In wireless terminal 200, a route of signals varies between a distance measuring operation and a synchronization establishing operation, and, when the distance measuring operation is performed, a detection result is inputted to comparator 208 without passing through integrator 204. By this means, the distance measuring operation of wireless terminal 200 does not involve integration processing, so that delay time due to integration processing is not produced and, consequently, it is possible to improve the accuracy of distance measurement. Further, the distance measuring operation uses the integration result acquired integrator 204 for a comparison reference voltage used in comparator 208. By this means, the integration result removing noise signal components from a detection signal is used for the comparison reference voltage, so that the comparison reference voltage is optimized. Consequently, it is possible to further improve the accuracy of distance measurement.
摘要翻译： 当使用UWB通信方案时，无线距离测量系统和无线终端提高距离测量的准确性。 在无线终端200中，信号路径在距离测量操作和同步建立操作之间变化，并且当执行距离测量操作时，检测结果被输入到比较器208而不经过积分器204.通过这种方式， 无线终端200的距离测量操作不涉及积分处理，因此不会产生由于积分处理而引起的延迟时间，因此能够提高距离测量的精度。 此外，距离测量操作使用积分结果获取积分器204用于比较器208中使用的比较参考电压。通过这种方式，从检测信号中去除噪声信号分量的积分结果用于比较参考电压，使得比较 参考电压被优化。 因此，可以进一步提高距离测量的精度。
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