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公开(公告)号：US06563457B2
公开(公告)日：2003-05-13
申请号：US10001501
申请日：2001-11-14
IPC分类号： G01S124
CPC分类号： G01S19/46 , G01S5/0054 , G01S5/14 , G01S13/003 , G01S13/878 , G01S19/03 , G01S19/09 , G01S19/15 , G01S19/49
摘要： A method and system for determining a position of an object utilizes two-way ranging and polystatic techniques. A first communication transceiver at a first known location provides a bidirectional communication path between the first communication transceiver and the object wherein the first communication transceiver transmits a first ranging signal to the object and the object transmits a second ranging signal to the first communication transceiver in response to the first ranging signal. The first communication transceiver further provides a first unidirectional communication path between the first communication transceiver and the object wherein the first communication transceiver performs one of transmitting a third ranging signal to the object and receiving a fourth ranging signal from the object. A second communication transceiver at a second known location provides a second unidirectional communication path between the second communication transceiver and the object wherein the second communication transceiver performs one of transmitting a third ranging signal to the object and receiving a fourth ranging signal from the object. A signal processor determines a first path length corresponding to a first time length of the bidirectional communication path, a second path length corresponding to a second time length of the first and second unidirectional communication paths, and the position of the object based on the first and second known locations and the first and second path lengths.
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2.发明授权Method and system for determining a position of a transceiver unit utilizing two-way ranging in a polystatic satellite configuration 失效用于使用多声道卫星配置中的双向测距来确定收发器单元的位置的方法和系统公开(公告)号：US06377208B2
公开(公告)日：2002-04-23
申请号：US08803937
申请日：1997-02-21
IPC分类号： G01S504
CPC分类号： G01S19/46 , G01S5/0054 , G01S5/14 , G01S13/003 , G01S13/878 , G01S19/03 , G01S19/09 , G01S19/15 , G01S19/49
摘要： A method and system for determining a position of an object utilizes two-way ranging and polystatic techniques. A first communication transceiver at a first known location provides a bidirectional communication path between the first communication transceiver and the object wherein the first communication transceiver transmits a first ranging signal to the object and the object transmits a second ranging signal to the first communication transceiver in response to the first ranging signal. The first communication transceiver further provides a first unidirectional communication path between the first communication transceiver and the object wherein the first communication transceiver performs one of transmitting a third ranging signal to the object and receiving a fourth ranging signal from the object. A second communication transceiver at a second known location provides a second unidirectional communication path between the second communication transceiver and the object wherein the second communication transceiver performs one of transmitting a third ranging signal to the object and receiving a fourth ranging signal from the object. A signal processor determines a first path length corresponding to a first time length of the bidirectional communication path, a second path length corresponding to a second time length of the first and second unidirectional communication paths, and the position of the object based on the first and second known locations and the first and second path lengths.
摘要翻译： 用于确定物体位置的方法和系统利用双向测距和聚偏振技术。 在第一已知位置处的第一通信收发器提供第一通信收发器和对象之间的双向通信路径，其中第一通信收发器向对象发送第一测距信号，并且对象将响应中的第二测距信号发送到第一通信收发信机 到第一个测距信号。 第一通信收发器还提供第一通信收发器和对象之间的第一单向通信路径，其中第一通信收发器执行向对象发送第三测距信号并从对象接收第四测距信号。 在第二已知位置处的第二通信收发器在第二通信收发器和对象之间提供第二单向通信路径，其中第二通信收发器执行向对象发送第三测距信号并从对象接收第四测距信号之一。 信号处理器确定对应于双向通信路径的第一时间长度的第一路径长度，对应于第一和第二单向通信路径的第二时间长度的第二路径长度，以及基于第一和第二单向通信路径的对象的位置 第二已知位置和第一和第二路径长度。
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3.发明授权公开(公告)号：US06807397B2
公开(公告)日：2004-10-19
申请号：US10264197
申请日：2002-10-03
申请人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Urban A. Von Der Embse , John I. Novak, III , Frank A. Taormina , Ming U. Chang
发明人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Urban A. Von Der Embse , John I. Novak, III , Frank A. Taormina , Ming U. Chang
IPC分类号： H04B7185
CPC分类号： H04B7/18519 , B64G1/1007 , B64G1/242
摘要： Methods for increasing the efficiency of satellite constellation operations are disclosed. The steps of the present invention comprise calculating the maximum number of communications signals that each satellite in the satellite constellation can generate, determining an operational constraint on each satellite, the operational constraint limiting the number of communications signals that each satellite can radiate substantially simultaneously, determining an operational space for each satellite wherein the operational space is defined using the operational constraint and the calculated number of signals, and using the operational space for each satellite in the constellation to determine the operational point for the constellation.
摘要翻译： 公开了提高卫星星座操作效率的方法。 本发明的步骤包括计算卫星星座中每个卫星可以产生的通信信号的最大数量，确定每个卫星的操作约束，限制每个卫星可基本上同时辐射的通信信号的数量的操作约束，确定 每个卫星的操作空间，其中使用操作约束和所计算的信号数定义操作空间，并且使用星座中的每个卫星的操作空间来确定星座的操作点。
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公开(公告)号：US06606307B1
公开(公告)日：2003-08-12
申请号：US09432439
申请日：1999-11-02
申请人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Urban A. Von Der Embse , John I. Novak, III , Frank A. Taormina , Ming U. Chang
发明人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Urban A. Von Der Embse , John I. Novak, III , Frank A. Taormina , Ming U. Chang
IPC分类号： H04B7185
CPC分类号： H04B7/18521
摘要： Methods for operating a satellite constellation are disclosed that utilize spatial diversity and directional gain antennas at ground terminal locations to provide multiple data rate services on a single frequency channel. One method comprises receiving a signal at a first and second satellite in the satellite constellation from a first communications device. A communications channel at a first frequency from the first satellite is used to communicate with the first communications device. A signal from a second communications device is received only at the second satellite at the first frequency, and the second satellite is used to communicate with the second communications device at the first frequency without substantially interfering with the communications with the first communications device.
摘要翻译： 公开了用于操作卫星星座的方法，其利用地面终端位置处的空间分集和方向增益天线在单个频率信道上提供多个数据速率业务。 一种方法包括从第一通信设备在卫星星座中的第一和第二卫星处接收信号。 来自第一卫星的第一频率的通信信道被用于与第一通信设备进行通信。 来自第二通信设备的信号仅在第一频率处在第二卫星处被接收，并且第二卫星被用于以第一频率与第二通信设备通信，而基本上不干扰与第一通信设备的通信。
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5.发明授权Signal processing circuit for communicating with a modular mobile terminal and method therefor 有权用于与模块化移动终端通信的信号处理电路及其方法公开(公告)号：US06888499B2
公开(公告)日：2005-05-03
申请号：US10694957
申请日：2003-10-27
CPC分类号： H01Q21/062 , H01Q1/288 , H04B7/18571
摘要： A signal processing circuit for satellite communications signal includes a first one dimensional digital beam forming circuit for forming a beam signal in a first direction and a second one dimensional digital beam forming circuit for forming a beam in a second direction. A direction filtering circuit is coupled between the first one dimensional digital beam forming circuit and the second one dimensional digital beam forming circuit. The filtering circuit determining a communications signal direction of the satellite communications signal and tunes the filter to reduce a filter bandwidth and a frequency range of said beam signal prior to processing through the second one dimensional digital beam forming circuit.
摘要翻译： 用于卫星通信信号的信号处理电路包括用于在第一方向上形成波束信号的第一一维数字波束形成电路和用于在第二方向上形成波束的第二一维数字波束形成电路。 方向滤波电路耦合在第一一维数字波束形成电路和第二一维数字波束形成电路之间。 所述滤波电路确定所述卫星通信信号的通信信号方向，并调谐所述滤波器以在通过所述第二一维数字波束形成电路进行处理之前降低所述波束信号的滤波器带宽和频率范围。
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公开(公告)号：US06496146B1
公开(公告)日：2002-12-17
申请号：US09376942
申请日：1999-08-18
IPC分类号： H01Q124
CPC分类号： H01Q1/38 , H01Q1/242 , H01Q1/246 , H01Q1/3275 , H01Q1/42 , H01Q9/0407 , H01Q21/065 , H01Q23/00
摘要： A modular mobile terminal for a satellite system is disclosed in which the satellite system has a ground station and a network such as a telephone network coupled to the ground station. Each of the mobile terminals has a radome layer and a support layer having a plurality of circuit traces formed thereon. An element module is coupled between the support layer and the radome layer. Each element module comprises a housing and a radiating patch having a feed therethrough. A dielectric layer is coupled adjacent to the radiating patch. A ground plane is disposed adjacent to the dielectric layer on the opposite side of the dielectric layer as the radiating patch. A plurality of circuit chips is coupled to the ground plane. The support layer of the array has a plurality of circuit traces formed thereon. A plurality of interconnections between the circuit chips and the plurality of traces connect the traces and the circuit chips.
摘要翻译： 公开了一种用于卫星系统的模块化移动终端，其中卫星系统具有地面站和诸如耦合到地面站的电话网络的网络。 每个移动终端具有天线罩层和在其上形成有多个电路迹线的支撑层。 元件模块耦合在支撑层和天线罩层之间。 每个元件模块包括外壳和具有穿过其中的馈电的辐射贴片。 电介质层与辐射贴片相邻耦合。 接地平面设置在与作为辐射贴片的电介质层相反侧的电介质层附近。 多个电路芯片耦合到接地层。 阵列的支撑层具有形成在其上的多个电路迹线。 电路芯片和多个迹线之间的多个互连连接迹线和电路芯片。
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公开(公告)号：US06963548B1
公开(公告)日：2005-11-08
申请号：US09550505
申请日：2000-04-17
申请人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Frank A. Hagen , Ming U. Chang , John I. Novak, III
发明人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Frank A. Hagen , Ming U. Chang , John I. Novak, III
IPC分类号： H04B1/7097 , H04B7/185 , H04B7/26 , H04B1/707
CPC分类号： H04B7/18534 , H04B1/7097 , H04B2201/709709
摘要： A novel method and apparatus is described for reducing the number of CDMA codes for a constellation of multiple trasponder platforms serving a number of subscribers in the same service area. A coherent processing technique synchronizes the phase of CDMA signals arriving at a subscriber from multiple trasponder platforms to increase the code capacity and thus the number of possible subscribers for most of the multiple transponder platform systems in current use.
摘要翻译： 描述了一种新颖的方法和装置，用于减少为同一服务区域中的多个订户服务的多个应答器平台的星座的CDMA码的数量。 相干处理技术使来自多个应答器平台的到达用户的CDMA信号的相位同步，以增加当前使用中的多个应答器平台系统中的大多数应答器平台系统的代码容量和可能的订户数量。
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公开(公告)号：US06791495B2
公开(公告)日：2004-09-14
申请号：US10272633
申请日：2002-10-17
IPC分类号： H01Q124
CPC分类号： H01Q1/38 , H01Q1/242 , H01Q1/246 , H01Q1/3275 , H01Q1/42 , H01Q9/0407 , H01Q21/065 , H01Q23/00
摘要： A modular mobile terminal for a satellite system is disclosed in which the satellite system has a ground station and a network such as a telephone network coupled to the ground station. Each of the mobile terminals has a radome layer and a support layer having a plurality of circuit traces formed thereon. An element module is coupled between the support layer and the radome layer. Each element module comprises a housing and a radiating patch having a feed therethrough. A dielectric layer is coupled adjacent to the radiating patch. A ground plane is disposed adjacent to the dielectric layer on the opposite side of the dielectric layer as the radiating patch. A plurality of circuit chips is coupled to the ground plane. The support layer of the array has a plurality of circuit traces formed thereon. A plurality of interconnections between the circuit chips and the plurality of traces connect the traces and the circuit chips.
摘要翻译： 公开了一种用于卫星系统的模块化移动终端，其中卫星系统具有地面站和诸如耦合到地面站的电话网络的网络。 每个移动终端具有天线罩层和在其上形成有多个电路迹线的支撑层。 元件模块耦合在支撑层和天线罩层之间。 每个元件模块包括壳体和具有穿过其中的馈电的辐射贴片。 电介质层与辐射贴片相邻耦合。 接地平面设置在与作为辐射贴片的电介质层相反侧的电介质层附近。 多个电路芯片耦合到接地层。 阵列的支撑层具有形成在其上的多个电路迹线。 电路芯片和多个迹线之间的多个互连连接迹线和电路芯片。
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9.发明授权Signal processing circuit for communicating with a modular mobile satellite terminal and method therefor 有权用于与模块化移动卫星终端通信的信号处理电路及其方法公开(公告)号：US06667715B1
公开(公告)日：2003-12-23
申请号：US09376941
申请日：1999-08-18
IPC分类号： H01Q322
CPC分类号： H01Q21/062 , H01Q1/288 , H04B7/18571
摘要： A signal processing circuit for satellite communications signal includes a first one dimensional digital beam forming circuit for forming a beam signal in a first direction and a second one dimensional digital beam forming circuit for forming a beam in a second direction. A direction filtering circuit is coupled between the first one dimensional digital beam forming circuit and the second one dimensional digital beam forming circuit. The filtering circuit determining a communications signal direction of the satellite communications signal and tunes the filter to reduce a filter bandwidth and a frequency range of said beam signal prior to processing through the second one dimensional digital beam forming circuit.
摘要翻译： 用于卫星通信信号的信号处理电路包括用于在第一方向上形成波束信号的第一一维数字波束形成电路和用于在第二方向上形成波束的第二一维数字波束形成电路。 方向滤波电路耦合在第一一维数字波束形成电路和第二一维数字波束形成电路之间。 所述滤波电路确定所述卫星通信信号的通信信号方向，并调谐所述滤波器以在通过所述第二一维数字波束形成电路进行处理之前降低所述波束信号的滤波器带宽和频率范围。
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10.发明授权公开(公告)号：US06501941B1
公开(公告)日：2002-12-31
申请号：US09432440
申请日：1999-11-02
申请人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Urban A. Von Der Embse , John I. Novak, III , Frank A. Taormina , Ming U. Chang
发明人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Urban A. Von Der Embse , John I. Novak, III , Frank A. Taormina , Ming U. Chang
IPC分类号： H04B7185
CPC分类号： H04B7/18519 , B64G1/1007 , B64G1/242
摘要： Methods for increasing the efficiency of satellite constellation operations are disclosed. The steps of the present invention comprise calculating the maximum number of communications signals that each satellite in the satellite constellation can generate, determining an operational constraint on each satellite, the operational constraint limiting the number of communications signals that each satellite can radiate substantially simultaneously, determining an operational space for each satellite wherein the operational space is defined using the operational constraint and the calculated number of signals, and using the operational space for each satellite in the constellation to determine the operational point for the constellation.
摘要翻译： 公开了提高卫星星座操作效率的方法。 本发明的步骤包括计算卫星星座中每个卫星可以产生的通信信号的最大数量，确定每个卫星的操作约束，限制每个卫星可基本上同时辐射的通信信号的数量的操作约束，确定 每个卫星的操作空间，其中使用操作约束和所计算的信号数定义操作空间，并且使用星座中的每个卫星的操作空间来确定星座的操作点。
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