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1. 发明授权

US07089000B1 Multi-node wireless communication system with multiple transponding platforms 有权
标题翻译：具有多个反应平台的多节点无线通信系统
公开(公告)号：US07089000B1
公开(公告)日：2006-08-08
申请号：US09584012
申请日：2000-05-30
申请人： Ming U. Chang , Kar W. Yung , Frank A. Hagen , Donald C. D. Chang
发明人： Ming U. Chang , Kar W. Yung , Frank A. Hagen , Donald C. D. Chang
IPC分类号： H04Q7/20
CPC分类号： H04B7/18534
摘要： A mobile wireless communications system including a plurality of individual transponding platforms all in communication with a central processing hub. A signal processed by the central processing hub is radiated simultaneously through multiple paths to a plurality of the individual transponding platforms. The signal transmitted to each transponding platform by the hub is appropriately delayed by the hub so as to equalize the differential delay of all such signals from a given receiver location. The radiated signal is then re-radiated by each of the plurality of individual transponding platforms to a mobile satellite terminal that receives the re-radiated signal from the plurality of individual transponding platforms. The signals from the plurality of transponding platforms are all received coherently by the intended user, and incoherently by all other users.
摘要翻译：一种移动无线通信系统，包括与中央处理集线器通信的多个单独的转发平台。由中央处理集线器处理的信号同时通过多个路径被辐射到多个单独的转发平台。由集线器传输到每个转发平台的信号由集线器适当地延迟，以便均衡来自给定接收机位置的所有这些信号的差分延迟。然后，辐射信号被多个单独的转发平台中的每一个重新辐射到从多个单独的转发平台接收再发射信号的移动卫星终端。来自多个转发平台的信号都被预期用户相干接收，并且被所有其他用户不连贯地接收。

2. 发明授权

US06606307B1 Techniques for utilization of bandwidth space assets 有权
标题翻译：利用带宽空间资产的技术
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。

3. 发明授权

US06388615B1 Micro cell architecture for mobile user tracking communication system 有权
公开(公告)号：US06388615B1
公开(公告)日：2002-05-14
申请号：US09587758
申请日：2000-06-06
申请人： Donald C. D. Chang , Ying Feria , Weizheng Wang , Alan Cha , Ming Chang , Frank A. Hagen , Kar W. Yung
发明人： Donald C. D. Chang , Ying Feria , Weizheng Wang , Alan Cha , Ming Chang , Frank A. Hagen , Kar W. Yung
IPC分类号： H01Q322
CPC分类号： H04B7/18504 , H04B7/0617 , H04B7/086
摘要： A system and method for tracking a user. The system is adapted for use in a wireless communication system and creates a plurality of beams within a coverage area. A first beam is directed at a user in a first microcell and a number of additional beams illuminate microcells immediately adjacent the first microcell. The system is equipped with a mechanism for detecting movement of the user from the first microcell to one of the immediately adjacent microcells. On the detection of movement of the user, the system redirects the first beam from the first microcell to a second microcell, the second microcell being one of the adjacent microcells. In the illustrative embodiment, the system is implemented in a stratospheric platform based communication system including a hub adapted to communicate with a stratospheric platform. A transceiver and a phased array antenna are disposed on the platform to communicate with the hub and with the user. A second antenna is provided on the platform to communicate with the hub. Beamforming and direction are implemented on the hub and communicated to the platform. The user's position is detected with a global positioning system receiver, by measuring the strength of a signal received from the user, or by other suitable means. On detection of user movement from the first microcell, the beamforming system redirects the beam to follow the user into a second microcell. Additional beams around the user's microcell are illuminated to facilitate detection of the users movement.

4. 发明授权

US07215954B1 Resource allocation method for multi-platform communication system 有权
标题翻译：多平台通信系统的资源分配方法
公开(公告)号：US07215954B1
公开(公告)日：2007-05-08
申请号：US09587960
申请日：2000-06-06
申请人： Kar W. Yung , Frank A. Hagen , Donald C. D. Chang
发明人： Kar W. Yung , Frank A. Hagen , Donald C. D. Chang
IPC分类号： H04Q7/20
CPC分类号： H04B7/18539
摘要： A mobile wireless communications system including a plurality of individual transponding nodes of various types, all in communication with a central processing hub. A local user signal is processed by the central processing hub and radiated through multiple paths to a plurality of the plurality of individual transponding platforms simultaneously. The signal is then re-radiated by each of the plurality of the plurality of individual transponding platforms to a mobile terminal that receives the re-radiated signal from the plurality of the plurality of individual transponding platforms coherently and in phase. The number of transponders and codes used to transmit each user signal can be readily adapted to user requirements. Additionally, each user is assigned a profit value by the central processing hub depending upon certain user characteristics. The assigned user profit value allows the total system utility/profitability to be maximized.
摘要翻译：一种移动无线通信系统，包括多个各种类型的单个转发节点，全部与中央处理集线器通信。本地用户信号由中央处理集线器处理，并通过多个路径同时辐射到多个单独的转发平台。然后，信号被多个多个单独的转发平台中的每一个重新辐射到移动终端，该移动终端相干地并且相位地从多个多个单独的转发平台接收再发射的信号。用于发送每个用户信号的转发器和代码的数量可以容易地适应用户需求。此外，根据某些用户特征，每个用户被中央处理集线器分配利润值。分配的用户利润值允许最大化整个系统效用/盈利能力。

5. 发明授权

US06909875B1 Multi-platform wireless communication system for a variety of different user types 有权
标题翻译：多平台无线通信系统，适用于各种不同的用户类型
公开(公告)号：US06909875B1
公开(公告)日：2005-06-21
申请号：US09576648
申请日：2000-05-22
申请人： Kar W. Yung , Frank A. Hagen , Donald C. D. Chang
发明人： Kar W. Yung , Frank A. Hagen , Donald C. D. Chang
IPC分类号： H01Q3/26 , H04B7/185 , H04B7/212 , H04B7/26
CPC分类号： H04B7/18504 , H04B7/18506 , H04B7/18532 , H04B7/18534 , H04B7/212
摘要： A mobile wireless communications system including a plurality of individual transponding nodes of various types, all in communication with a central processing hub. A local user signal is processed by the central processing hub and radiated through multiple paths to a plurality of the plurality of individual transponding platforms simultaneously. The signal is then re-radiated by each of the plurality of the plurality of individual transponding platforms to a mobile terminal that receives the re-radiated signal from the plurality of the plurality of individual transponding platforms coherently and in phase. The number of transponders and codes used to transmit each user signal can be readily adapted to user requirements.
摘要翻译：一种移动无线通信系统，包括多个各种类型的单个转发节点，全部与中央处理集线器通信。本地用户信号由中央处理集线器处理，并通过多个路径同时辐射到多个单独的转发平台。然后，信号被多个多个单独的转发平台中的每一个重新辐射到移动终端，该移动终端相干地并且相位地从多个多个单独的转发平台接收再发射的信号。用于发送每个用户信号的转发器和代码的数量可以容易地适应用户需求。

6. 发明授权

US06807397B2 Method for identifying growth limits of handheld services for mobile satellite communications 有权
标题翻译：识别移动卫星通信手持服务增长限制的方法
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。

7. 发明授权

US06785553B2 Position location of multiple transponding platforms and users using two-way ranging as a calibration reference for GPS 有权
标题翻译：使用双向测距作为GPS的校准参考的多个反应平台和用户的位置
公开(公告)号：US06785553B2
公开(公告)日：2004-08-31
申请号：US09841110
申请日：2001-04-24
申请人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Ming U. Chang , Frank A. Hagen
发明人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Ming U. Chang , Frank A. Hagen
IPC分类号： H04Q720
CPC分类号： G01S19/40 , G01S5/14 , G01S19/07 , G01S19/15 , H04B7/18504 , H04B7/18532 , H04B7/18534
摘要： A method and system for using two-way ranging navigation to accurately determine the location of a transponder platform above-Earth or a fixed or mobile target on the ground or on water. The two-way ranging navigation measurements are used as calibration references, thereby improving the positioning accuracy of GPS. The system includes GPS and a two-way ranging navigation system for taking position measurements of a target. A correction factor is determined as a function of the measurements and the GPS position is adjusted by the correction factor. The method for calibrating GPS using two-way ranging navigation involves taking a two-way ranging navigation measurement and a GPS measurement of a target, determining a correction factor as a function of the measurements, and correcting the GPS position by taking a second GPS measurement and adjusting it by the correction factor.
摘要翻译：一种使用双向测距导航准确地确定地球上的应答器平台或地面或水上固定或移动目标的位置的方法和系统。双向测距导航测量用作校准参考，从而提高GPS的定位精度。该系统包括GPS和用于对目标进行位置测量的双向测距导航系统。作为测量的函数确定校正因子，并且通过校正因子来调整GPS位置。使用双向测距导航来校准GPS的方法包括进行目标的双向测距导航测量和GPS测量，确定作为测量的函数的校正因子，以及通过进行第二GPS测量来校正GPS位置并通过校正因子进行调整。

8. 发明授权

US06246363B1 Method and system for incorporating two-way ranging navigation as a calibration reference for GPS 有权
标题翻译：用于将双向测距导航作为GPS的校准参考的方法和系统
公开(公告)号：US06246363B1
公开(公告)日：2001-06-12
申请号：US09209062
申请日：1998-12-10
申请人： Kar W. Yung , David C. Cheng , Donald C. D. Chang
发明人： Kar W. Yung , David C. Cheng , Donald C. D. Chang
IPC分类号： H04B7185
CPC分类号： G01S19/40 , G01S5/14 , G01S19/07 , G01S19/15
摘要： A method and system for using two-way ranging navigation to accurately determine the range along the path from source to destination by measuring the time delay during round-trip communication via satellite. The two-way ranging navigation measurements are used as calibration references, thereby improving the positioning accuracy of GPS. The system includes GPS and a two-way ranging navigation system for taking position measurements of a target. A correction factor is determined as a function of the measurements and the GPS position is adjusted by the correction factor. The method for calibrating GPS using two-way ranging navigation involves taking a two-way ranging navigation measurement and a GPS measurement of a target, determining a correction factor as a function of the measurements, and correcting the GPS position by taking a second GPS measurement and adjusting it by the correction factor.
摘要翻译：一种使用双向测距导航的方法和系统，通过测量通过卫星的往返通信中的时间延迟来准确地确定从源到目的地的路径。双向测距导航测量用作校准参考，从而提高GPS的定位精度。该系统包括GPS和用于对目标进行位置测量的双向测距导航系统。作为测量的函数确定校正因子，并且通过校正因子来调整GPS位置。使用双向测距导航来校准GPS的方法包括进行目标的双向测距导航测量和GPS测量，确定作为测量的函数的校正因子，以及通过进行第二GPS测量来校正GPS位置并通过校正因子进行调整。

9. 发明授权

US07198230B2 Method and system for maximizing satellite constellation coverage 失效
标题翻译：卫星星座覆盖最大化的方法和系统
公开(公告)号：US07198230B2
公开(公告)日：2007-04-03
申请号：US08949988
申请日：1997-10-14
申请人： Kar W. Yung , Donald C. D. Chang
发明人： Kar W. Yung , Donald C. D. Chang
IPC分类号： B64G1/00
CPC分类号： H04B7/195
摘要： A method and system for maximizing satellite coverage at predetermined local times for a set of predetermined geographic location includes a processor operative to determine a period of rotation for each of the desired satellites in the satellite constellation. The processor also determines a time dependent coverage of the satellite constellation based on the period of rotation and the trajectory of each of the desired satellites. The trajectories of the desired satellites are tilted until the satellite constellation provides maximum coverage at the predetermined local times for the set of predetermined geographic locations. If a new satellite constellation is being designed, command signals are programmed into a computer of a launch vehicle containing the modified trajectory. If an existing satellite constellation is being modified, the ground station transmits command signals to the satellites for modifying the trajectory of the satellites in accordance with the tilted trajectory.
摘要翻译：一种用于在预定地理位置的一组预定的本地时间内最大化卫星覆盖的方法和系统包括可操作地确定卫星星座中每个所需卫星的旋转周期的处理器。处理器还基于旋转周期和每个所需卫星的轨迹来确定卫星星座的时间相关覆盖。期望的卫星的轨迹倾斜，直到卫星星座为预定的地理位置集合在预定的本地时间提供最大的覆盖。如果正在设计新的卫星星座，则将命令信号编程到包含修改的轨迹的运载火箭的计算机中。如果现有的卫星星座正在被修改，则地面站根据倾斜的轨迹向卫星发送命令信号以修改卫星的轨迹。

10. 发明授权

US06460808B2 Satellite system and method of deploying same 有权
公开(公告)号：US06460808B2
公开(公告)日：2002-10-08
申请号：US10008675
申请日：2001-10-23
申请人： Frank Taormina , Donald C. D. Chang , Kar W. Yung , David C. Cheng , William W. Mayfield , John Novak, III , Arthur W. Wang
发明人： Frank Taormina , Donald C. D. Chang , Kar W. Yung , David C. Cheng , William W. Mayfield , John Novak, III , Arthur W. Wang
IPC分类号： B64G100
CPC分类号： H04B7/195
摘要： A satellite communication system has a first deployment of a plurality of satellites deployed in a medium earth orbit and two later deployments of a plurality of satellites deployed in the medium earth orbit. The first deployment is spaced so that the second deployment may be easily deployed and interleaved into the first deployment. A ground terminal is used for communicating with the satellites in the first and second deployments.

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