公开(公告)号：US08102313B2

公开(公告)日：2012-01-24

申请号：US12401210

申请日：2009-03-10

申请人： Christoph Guenther ,  Hermann Bischl ,  Achim Dreher

发明人： Christoph Guenther ,  Hermann Bischl ,  Achim Dreher

IPC分类号： H01Q3/26 ,  H04B7/185

CPC分类号： H01Q1/288 ,  H01Q1/28 ,  H01Q3/2647 ,  H01Q3/2652

摘要： The Method for transmitting a signal from a transmitter in an area around the transmitter via a satellite comprising the steps of transmitting a first signal having a first frequency from the transmitter to a satellite having a retrodirective antenna array comprising receiving antennas and transmitting antennas, receiving the signal transmitted from the transmitter by the receiving antennas of the retrodirective antenna array as first signals wherein the first signals received by the receiving antennas have a phase relation among each other defined by the geometric arrangement of the receiving antennas, and retrodirectively re-transmitting second signals from the transmitting antennas of the antenna array of the satellite in the direction towards the transmitter in the form of a beam with the transmitter located substantially in the center of the beam wherein the second signal has a second frequency different from the first frequency and wherein the phase relations among the second signal transmitted from the transmitting antennas of the antenna array of the satellite are substantially the same as the phase relations among the first signals received by the receiving antennas of the antenna array of the satellite.

摘要翻译： 用于经由卫星在发射机周围的区域中从发射机发送信号的方法包括以下步骤：将具有第一频率的第一信号从发射机发送到具有包括接收天线和发射天线的逆向天线阵列的卫星，接收 信号由作为第一信号的逆导天线阵列的接收天线从发射机发送的信号，其中由接收天线接收的第一信号彼此之间具有由接收天线的几何布置定义的相位关系，以及逆向重新发送第二信号 从卫星的天线阵列的发射天线以波束形式的发射机的方式发射，发射机基本上位于波束的中心，其中第二信号具有不同于第一频率的第二频率，其中， 第二信号之间的相位关系 从卫星的天线阵列的发送天线发送的信号与由卫星的天线阵列的接收天线接收到的第一信号之间的相位关系基本相同。

公开(公告)号：US20110140958A1

公开(公告)日：2011-06-16

申请号：US12964559

申请日：2010-12-09

申请人： Patrick Henkel ,  Zhibo Wen ,  Christoph Guenther

发明人： Patrick Henkel ,  Zhibo Wen ,  Christoph Guenther

IPC分类号： G01S19/44

CPC分类号： G01S19/04 ,  G01S19/32 ,  G01S19/44

摘要： A new method for bias estimation on multiple frequencies with a Kalman filter is proposed. It consists of four steps: First, a least-squares estimation of ranges, ionospheric delays, ambiguities, receiver phase biases and satellite phase biases is performed. The code biases are absorbed in the ranges and ionospheric delays, and a subset of ambiguities is mapped to the phase biases to remove linear dependencies between the unknown parameters. In a second step, the accuracy of the bias estimates is efficiently improved by a Kalman filter. The real-valued a posteriori ambiguity estimates are decorrelated by an integer ambiguity transformation to reduce the time of ambiguity resolution. Once the float ambiguities have sufficiently converged, they are fixed sequentially in a third step. Finally, a second Kalman filter is used to separate the receiver and satellite code biases and the tropospheric delays from the ranges.

摘要翻译： 提出了一种利用卡尔曼滤波器对多个频率进行偏差估计的新方法。 它包括四个步骤：首先，进行范围的最小二乘估计，电离层延迟，模糊度，接收器相位偏差和卫星相位偏差。 代码偏差被吸收在范围和电离层延迟中，并且模糊的子集被映射到相位偏移以去除未知参数之间的线性依赖性。 在第二步中，通过卡尔曼滤波器有效地提高偏差估计的精度。 实值后验模糊度估计是通过整数模糊度变换去相关的，以减少模糊度解析的时间。 一旦浮动模糊度已经充分收敛，它们在第三步骤中依次固定。 最后，使用第二卡尔曼滤波器将接收机和卫星码偏差和对流层延迟从范围分离。

公开(公告)号：US06906518B2

公开(公告)日：2005-06-14

申请号：US10301259

申请日：2002-11-21

申请人： Christoph Guenther Leussler

发明人： Christoph Guenther Leussler

IPC分类号： G01R33/3415 ,  A61B5/055 ,  G01R33/341 ,  G01R33/36 ,  G01V3/00

CPC分类号： G01R33/341 ,  G01R33/3628

摘要： An RF coil system for a magnetic resonance imaging apparatus whereby a substantially computer-aided and hence automatically optimized image quality in respect of signal-to-noise ratio and resolution can be achieved in dependence on the type and size of the object to be imaged, without time-consuming replacement or manual positioning of the RF coil system being necessary. To this end, the coil system (A) includes a plurality of single RF coils (Sx) which are essentially decoupled from one another and have a different size and/or different position, as well as a control device with a plurality of transmission units which are associated with a respective RF coil and whereby one or more RF coils can be selected and supplied with an RF pulse having an independently adjustable amplitude and/or phase and/or pulse shape. The invention also relates to a magnetic resonance imaging apparatus provided with such an RF coil system.

摘要翻译： 用于磁共振成像装置的RF线圈系统，其可以根据待成像对象的类型和尺寸来实现关于信噪比和分辨率的基本计算机辅助且因此自动优化的图像质量， 无需耗费时间的RF线圈系统的更换或手动定位。 为此，线圈系统（A）包括多个基本上彼此分离并具有不同尺寸和/或不同位置的单个RF线圈（Sx），以及具有多个传输单元的控制装置 其与相应的RF线圈相关联，并且由此可以选择一个或多个RF线圈并提供具有独立可调幅度和/或相位和/或脉冲形状的RF脉冲。 本发明还涉及具有这种RF线圈系统的磁共振成像装置。

公开(公告)号：US06356762B1

公开(公告)日：2002-03-12

申请号：US09154455

申请日：1998-09-16

申请人： Christoph Guenther

发明人： Christoph Guenther

IPC分类号： H04G720

CPC分类号： H04W16/16 ,  H04W88/08

摘要： A method for the operation of a radio system (28) includes muting, the fixed station (25) of the radio system (28) when no operable mobile telecommunication terminal (30) is located in its coverage area (20). A system to execute the procedure comprises a fixed station (25) for the radio system (28) and a mobile telecommunication terminal (30) suited to communicate with the radio system (28). The fixed station (25) has a circuit to detect an operable mobile telecommunication terminal (30) in its coverage area (20) and a circuit to mute the transmitter of the fixed station (25), depending on the state of the detection circuit. The mobile telecommunication terminal (30) has a circuit to determine its position—preferably based on signals of another radio system (18)—and to check whether that position is basically located within the coverage area (20) of a fixed station (25) of the radio system (28) with which it is entitled to communicate, as well as a circuit to execute a registration procedure which can trigger the activation of the radio system (28).

摘要翻译： 当无可操作的移动电信终端（30）位于其覆盖区域（20）中时，用于无线电系统（28）的操作的方法包括静音无线电系统（28）的固定站（25）。 执行该过程的系统包括用于无线电系统（28）的固定站（25）和适于与无线电系统（28）通信的移动通信终端（30）。 固定站（25）具有检测其覆盖区域（20）中的可操作移动电信终端（30）的电路和根据检测电路的状态使固定站（25）的发射机静音的电路。 移动通信终端（30）具有确定其位置的电路​​，优选地基于另一个无线电系统（18）的信号，并且检查该位置是否基本上位于固定站（25）的覆盖区域（20）内， （28），以及用于执行可触发无线电系统（28）的激活的注册过程的电路。

公开(公告)号：US08624777B2

公开(公告)日：2014-01-07

申请号：US12675828

申请日：2008-09-29

申请人： Christoph Guenther

发明人： Christoph Guenther

IPC分类号： G01S19/43 ,  G01S19/44

CPC分类号： G01S19/15 ,  G01S19/32 ,  G01S19/44

摘要： The present invention relates to a multiple carrier smoothing method for navigation satellite signals, in particular a three carrier smoothing method for Galileo signals. It provides a smoothed code solution, which is ionosphere-free to the first order and whose noise is reduced to sub-decimeter level. The method involves integer ambiguities, which can be resolved reliably. The sensitivity of the new method to receiver biases and ionospheric delays of the second order is small. The performance of the three carrier smoothing method allows to reduce the averaging interval to ⅕-th of its current standard value. The results refer to pseudo ranges and are geometry independent.

摘要翻译： 本发明涉及用于导航卫星信号的多载波平滑方法，特别是涉及伽利略信号的三载波平滑方法。 它提供了一个平滑的代码解决方案，这是一个无电离层的第一阶，其噪声降低到分秒级。 该方法涉及整数模糊度，可以可靠地解决。 新方法对二次接收偏差和电离层延迟的敏感性很小。 三载波平滑方法的性能允许将平均间隔减小到其当前标准值的1/5。 结果指的是伪距离，几何无关。

公开(公告)号：US07852263B2

公开(公告)日：2010-12-14

申请号：US12349241

申请日：2009-01-06

申请人： Patrick Henkel ,  Christoph Guenther

发明人： Patrick Henkel ,  Christoph Guenther

IPC分类号： G01S19/02 ,  G01S19/05

CPC分类号： G01S19/02

摘要： In a method for transmitting satellite data of a global navigation satellite system each satellite transmit position data of neighboring satellites to a navigation device on the earth. The subset of neighboring satellites with respect to a specific satellite is determined by averaging over a period of the inter-satellite distance. The subsets are further restricted to the condition that all visible satellites are referenced by the position data of at least one other satellite. This requirement can be met by choosing appropriate permutations among the satellites with shortest distance.

摘要翻译： 在用于发送全球导航卫星系统的卫星数据的方法中，每个卫星将相邻卫星的位置数据发射到地球上的导航装置。 相对于特定卫星的相邻卫星的子集通过在卫星间距离的周期上的平均来确定。 子集进一步限于所有可见卫星由至少一个其他卫星的位置数据引用的条件。 通过在距离最短的卫星之间选择适当的排列来满足这一要求。

公开(公告)号：US06870453B2

公开(公告)日：2005-03-22

申请号：US10135820

申请日：2002-04-30

申请人： Volkmar Schulz ,  Christian Findeklee ,  Christoph Guenther Leussler

发明人： Volkmar Schulz ,  Christian Findeklee ,  Christoph Guenther Leussler

IPC分类号： A61B5/055 ,  G01R33/34 ,  G01R33/422 ,  H01F1/00

CPC分类号： G01R33/34046 ,  G01R33/34061

摘要： The invention relates to an MR apparatus that is provided with an open magnet system and a quadrature coil system that includes a resonator that is tuned by tuning capacitors on at least one of the two sides of the steady magnetic field, said resonator including two large-area electrical conductors that are situated at a distance from one another and are connected to one another in a number of connection points that are distributed along the circumference, and are also provided with at least two terminals that are distributed along the circumference in order to receive or generate RF magnetic fields that are mutually offset in phase. The invention also relates to a corresponding quadrature coil system.

摘要翻译： 本发明涉及一种具有开放磁体系统和正交线圈系统的MR装置，该系统包括通过在稳定磁场的两侧中的至少一个上的调谐电容器进行调谐的谐振器，所述谐振器包括两个大电流， 区域电导体彼此间隔一定距离并且沿着圆周分布的多个连接点彼此连接，并且还设置有至少两个沿着圆周分布的端子，以便接收 或产生相位相互偏移的RF磁场。 本发明还涉及相应的正交线圈系统。

公开(公告)号：US06650118B2

公开(公告)日：2003-11-18

申请号：US10194108

申请日：2002-07-12

申请人： Christoph Guenther Leussler

发明人： Christoph Guenther Leussler

IPC分类号： G01V300

CPC分类号： G01R33/3415

摘要： The invention relates to an RF coil system for an open MR apparatus. The system includes a plurality of resonator elements which are arranged at the area of a patient (102) positioned in the examination volume of an MR apparatus. The resonator elements are constructed at least partly as solenoid elements (104) whose conductor elements form open turns which are arranged around the patient (102). It is thus achieved that the RF field generated in the transmission mode and the sensitivity profile in the detection mode are limited as strictly as possible to the examination volume of interest. At the same time RF field strengths that are adequate for medical imaging can be generated without exposing the patient to an unacceptable load.

摘要翻译： 本发明涉及一种用于开放MR设备的RF线圈系统。 该系统包括多个谐振器元件，其布置在位于MR装置的检查体积中的患者（102）的区域。 谐振器元件至少部分地被构造为螺线管元件（104），螺线管元件（104）的导体元件形成围绕患者（102）布置的匝。 因此，实现了在传输模式中产生的RF场和检测模式中的灵敏度分布被严格限制到感兴趣的检查体积。 同时，可以产生足够用于医学成像的RF场强，而不会使患者暴露于不可接受的负荷。

公开(公告)号：US08451168B2

公开(公告)日：2013-05-28

申请号：US12964559

申请日：2010-12-09

申请人： Patrick Henkel ,  Zhibo Wen ,  Christoph Guenther

发明人： Patrick Henkel ,  Zhibo Wen ,  Christoph Guenther

IPC分类号： G01S19/07

CPC分类号： G01S19/04 ,  G01S19/32 ,  G01S19/44

摘要： A new method for bias estimation on multiple frequencies with a Kalman filter is proposed. It consists of four steps: First, a least-squares estimation of ranges, ionospheric delays, ambiguities, receiver phase biases and satellite phase biases is performed. The code biases are absorbed in the ranges and ionospheric delays, and a subset of ambiguities is mapped to the phase biases to remove linear dependencies between the unknown parameters. In a second step, the accuracy of the bias estimates is efficiently improved by a Kalman filter. The real-valued a posteriori ambiguity estimates are decorrelated by an integer ambiguity transformation to reduce the time of ambiguity resolution. Once the float ambiguities have sufficiently converged, they are fixed sequentially in a third step. Finally, a second Kalman filter is used to separate the receiver and satellite code biases and the tropospheric delays from the ranges.

摘要翻译： 提出了一种利用卡尔曼滤波器对多个频率进行偏差估计的新方法。 它包括四个步骤：首先，进行范围的最小二乘估计，电离层延迟，模糊度，接收器相位偏差和卫星相位偏差。 代码偏差被吸收在范围和电离层延迟中，并且模糊的子集被映射到相位偏移以去除未知参数之间的线性依赖性。 在第二步中，通过卡尔曼滤波器有效地提高偏差估计的精度。 实值后验模糊度估计是通过整数模糊度变换去相关的，以减少模糊度解析的时间。 一旦浮动模糊度已经充分收敛，它们在第三步骤中依次固定。 最后，使用第二卡尔曼滤波器将接收机和卫星码偏差和对流层延迟从范围分离。

公开(公告)号：US20090195451A1

公开(公告)日：2009-08-06

申请号：US12349241

申请日：2009-01-06

申请人： Patrick Henkel ,  Christoph Guenther

发明人： Patrick Henkel ,  Christoph Guenther

IPC分类号： G01S1/00

CPC分类号： G01S19/02

摘要： In a method for transmitting satellite data of a global navigation satellite system each satellite transmit position data of neighboring satellites to a navigation device on the earth. The subset of neighboring satellites with respect to a specific satellite is determined by averaging over a period of the inter-satellite distance. The subsets are further restricted to the condition that all visible satellites are referenced by the position data of at least one other satellite. This requirement can be met by choosing appropriate permutations among the satellites with shortest distance.

摘要翻译： 在用于发送全球导航卫星系统的卫星数据的方法中，每个卫星将相邻卫星的位置数据发射到地球上的导航装置。 相对于特定卫星的相邻卫星的子集通过在卫星间距离的周期上的平均来确定。 子集进一步限于所有可见卫星由至少一个其他卫星的位置数据引用的条件。 通过在距离最短的卫星之间选择适当的排列来满足这一要求。