公开(公告)号：US07881663B2

公开(公告)日：2011-02-01

申请号：US11721074

申请日：2005-12-08

申请人： Jin-Ho Jo ,  Seong-Pal Lee

发明人： Jin-Ho Jo ,  Seong-Pal Lee

IPC分类号： H04B7/19

CPC分类号： H04B7/2125 ,  H04B7/18589

摘要： Provided are a beacon signal generating apparatus and a phase synchronizing apparatus using the same for establishing a phase synchronization while tracking a phase variation of a Timing Source Oscillator (TSO) of a satellite using a simpler scheme at an earth station, in making a phase synchronization between a clock signal of an On board Switch (OBS) embedded in the satellite and that of the earth station in a Satellite Switched Time Division Multiple Access (SS-TDMA) satellite communication system. The inventive beacon signal generating apparatus embedded in a satellite comprises a frequency oscillator for creating a TSO frequency, a beacon signal generator for multiplying the TSO frequency to be matched with a beacon signal frequency to generate a beacon signal synchronized with the TSO frequency, and a transmitter for transmitting the beacon signal to each of earth stations to recovery a frequency synchronized with the TSO frequency.

摘要翻译： 提供了一种信标信号发生装置和相位同步装置，用于在地球站使用更简单的方案来跟踪卫星的定时源振荡器（TSO）的相位变化来建立相位同步，以进行相位同步 在卫星中嵌入的车载交换机（OBS）的时钟信号和卫星交换时分多址（SS-TDMA）卫星通信系统中的地球站的时钟信号之间。 嵌入在卫星中的本发明的信标信号发生装置包括用于产生TSO频率的频率振荡器，用于将待匹配的TSO频率与信标信号频率相乘以生成与TSO频率同步的信标信号的信标信号发生器，以及 发射机，用于将信标信号发射到每个地球站以恢复与TSO频率同步的频率。

公开(公告)号：US20060100846A1

公开(公告)日：2006-05-11

申请号：US11182133

申请日：2005-07-14

申请人： Sang-Uk Lee ,  Jae-Hoon Kim ,  Ho-Jin Lee ,  Seong-Pal Lee

发明人： Sang-Uk Lee ,  Jae-Hoon Kim ,  Ho-Jin Lee ,  Seong-Pal Lee

IPC分类号： G06F9/45

CPC分类号： B64G7/00 ,  B64G1/24 ,  H04L67/38

摘要： A hybrid-type satellite simulation system and a method thereof are disclosed. The system includes: a satellite modeling unit including a satellite model and a software model having flight dynamics and space environment data; a satellite operation unit for generating a telecommand, transmitting the telecommand to the satellite simulation system, receiving simulation result as a telemetry, analyzing the simulation result and displaying the analyzed result; a simulator kernel for managing and controlling the satellite simulation system; a TCP/IP interface processing unit for performing an interface function of TCP/IP level between the simulator kernel and a satellite onboard computer; an onboard computer interface processing unit for performing an interface function between the satellite onboard computer and the TCP/IP interface processing unit; and a satellite onboard computer including flight software for controlling a satellite.

摘要翻译： 公开了一种混合型卫星仿真系统及其方法。 该系统包括：包括卫星模型和具有飞行动力学和空间环境数据的软件模型的卫星建模单元; 用于产生遥控的卫星操作单元，向卫星仿真系统发送遥控信号，接收模拟结果作为遥测，分析仿真结果并显示分析结果; 用于管理和控制卫星仿真系统的模拟器内核; TCP / IP接口处理单元，用于在模拟器内核和机载计算机之间执行TCP / IP级别的接口功能; 车载计算机接口处理单元，用于在卫星机载计算机和TCP / IP接口处理单元之间执行接口功能; 以及包含用于控制卫星的飞行软件的卫星机载计算机。

公开(公告)号：US20050140438A1

公开(公告)日：2005-06-30

申请号：US10856240

申请日：2004-05-27

申请人： Ming-Lu Jin ,  Soo-Young Kim ,  Seong-Pal Lee ,  Do-Seob Ahn ,  Deock-Gil Oh ,  Jae-Moung Kim

发明人： Ming-Lu Jin ,  Soo-Young Kim ,  Seong-Pal Lee ,  Do-Seob Ahn ,  Deock-Gil Oh ,  Jae-Moung Kim

IPC分类号： H03F1/26 ,  H03F1/32

CPC分类号： H03F1/3241

摘要： A fast LUT predistortion apparatus and method for compensating nonlinear distortion of the high power amplifier HPA is disclosed. The apparatus includes a predistortion unit for predistorting an input complex digital signal based on a look up table LUT implementation and outputting a predistorted complex signal; and a power amplifier for amplifying the predistorted signal and outputting an amplified complex signal.

摘要翻译： 公开了用于补偿高功率放大器HPA的非线性失真的快速LUT预失真装置和方法。 该装置包括：预失真单元，用于基于查找表LUT实现预失真输入复数数字信号并输出​​预失真的复信号; 以及用于放大预失真信号并输出​​放大的复合信号的功率放大器。

公开(公告)号：US06728650B2

公开(公告)日：2004-04-27

申请号：US09986150

申请日：2001-11-07

申请人： Jong Heung Park ,  Byoung Hyun Chung ,  Seung Woo Chung ,  Seong-Pal Lee

发明人： Jong Heung Park ,  Byoung Hyun Chung ,  Seung Woo Chung ,  Seong-Pal Lee

IPC分类号： G06F1900

CPC分类号： H03F3/602

摘要： A high power amplifier operating point determination apparatus and method determines an operating point of a high power amplifier for satellite communications system. For the purpose, the apparatus employs a DC voltage converting block in a channel amplifier located at a front-end of the high power amplifier, which couples an output power of the channel amplifier and converts the coupled output power to a DC voltage. Accordingly, in a ground monitoring center, before satellite launching, there are mapped the output power value of the high power amplifier and the DC voltage level of the channel amplifier per each command step assigned to an FGM or an ALC mode. After the satellite launching, it is possible to detect the operating point and the output power level of the high power amplifier based on mapped results by using the DC voltage level as telemetry information.

摘要翻译： 高功率放大器工作点确定装置和方法确定用于卫星通信系统的高功率放大器的工作点。 为此，该装置在位于高功率放大器前端的通道放大器中采用直流电压转换模块，其耦合通道放大器的输出功率并将耦合的输出功率转换为直流电压。 因此，在地面监控中心，在卫星发射之前，映射每个分配给FGM或ALC模式的每个命令步骤的高功率放大器的输出功率值和信道放大器的直流电压电平。 在卫星发射后，可以通过使用直流电压电平作为遥测信息，基于映射结果来检测大功率放大器的工作点和输出功率电平。

公开(公告)号：US06590476B2

公开(公告)日：2003-07-08

申请号：US10029941

申请日：2001-12-31

申请人： Moon Que Lee ,  Keun Kwan Ryu ,  In Bok Yom ,  Seong-Pal Lee

发明人： Moon Que Lee ,  Keun Kwan Ryu ,  In Bok Yom ,  Seong-Pal Lee

IPC分类号： H01P1203

CPC分类号： H01P1/2039

摘要： The present invention relates to a lowpass filter for effectively suppress a spurious in stop-band. The lowpass filter includes an input port microstrip element; an output port microstrip element; a first open-ended microstrip element; a second open-ended microstrip element; a first connector microstrip element; and, a second connector microstrip element. The each open-ended microstrips of the present invention is composed of distributed elements and distributed resistances connected each others in series and operated as a capacity, has a large impedance of the microstrip by low influence of a resistance in case of a low frequency, and has a small impedance of the microstrip by high influence of a resistance value in case of a high frequency. The present invention can effectively suppress the spurious characteristic, which is a disadvantage of the conventional lowpass filter composed of transmission lines at the RF band or the microwave band, by inserting resistance elements in open-ended microstrips.

公开(公告)号：US06191734B1

公开(公告)日：2001-02-20

申请号：US09432767

申请日：1999-11-03

申请人： Chan Goo Park ,  Soon Ik Jeon ,  Seong Pal Lee

发明人： Chan Goo Park ,  Soon Ik Jeon ,  Seong Pal Lee

IPC分类号： H01Q300

CPC分类号： H01Q3/06 ,  H01Q1/3275 ,  H01Q3/26

摘要： The present invention relates to a satellite tracking apparatus and control method for performing attitude control of a vehicle-mounted antenna for receiving a satellite broadcasting and operating the antenna. The present invention employs a hybrid tracking method that performs tracking using an electronic beam in an elevation direction while performing mechanical tracking in an azimuth direction. The electronic tracking is employed in controlling the azimuth direction to compensate for a tracking error in the azimuth direction. While the tracking performance of the present invention is similar to that of the full-electronic antenna, the present invention achieves better beam efficiency by arranging radiating elements to be effective in front of the antenna, thereby realizing a high gain antenna.

摘要翻译： 卫星跟踪装置和控制方法技术领域本发明涉及一种卫星跟踪装置和控制方法，用于执行用于接收卫星广播和操作天线的车载天线的姿态控制。 本发明采用混合跟踪方法，其在沿方位方向执行机械跟踪的同时，使用电子束在高度方向进行跟踪。 电子跟踪用于控制方位角方向以补偿方位角方向上的跟踪误差。 虽然本发明的跟踪性能类似于全电子天线的跟踪性能，但是本发明通过将辐射元件布置成在天线前方有效，从而实现更高的波束效率，从而实现高增益天线。

公开(公告)号：US20100034137A1

公开(公告)日：2010-02-11

申请号：US11721074

申请日：2005-12-08

申请人： Jin-Ho Jo ,  Seong-Pal Lee

发明人： Jin-Ho Jo ,  Seong-Pal Lee

IPC分类号： H04B7/212

CPC分类号： H04B7/2125 ,  H04B7/18589

摘要： Provided are a beacon signal generating apparatus and a phase synchronizing apparatus using the same for establishing a phase synchronization while tracking a phase variation of a Timing Source Oscillator (TSO) of a satellite using a simpler scheme at an earth station, in making a phase synchronization between a clock signal of an On board Switch (OBS) embedded in the satellite and that of the earth station in a Satellite Switched Time Division Multiple Access (SS-TDMA) satellite communication system. The inventive beacon signal generating apparatus embedded in a satellite comprises a frequency oscillator for creating a TSO frequency, a beacon signal generator for multiplying the TSO frequency to be matched with a beacon signal frequency to generate a beacon signal synchronized with the TSO frequency, and a transmitter for transmitting the beacon signal to each of earth stations to recovery a frequency synchronized with the TSO frequency.

摘要翻译： 提供了一种信标信号发生装置和相位同步装置，用于在地球站使用更简单的方案来跟踪卫星的定时源振荡器（TSO）的相位变化来建立相位同步，以进行相位同步 在卫星上嵌入的车载交换机（OBS）的时钟信号和卫星交换时分多址（SS-TDMA）卫星通信系统中的地球站的时钟信号之间。 嵌入在卫星中的本发明的信标信号发生装置包括用于产生TSO频率的频率振荡器，用于将待匹配的TSO频率与信标信号频率相乘以生成与TSO频率同步的信标信号的信标信号发生器，以及 发射机，用于将信标信号发射到每个地球站以恢复与TSO频率同步的频率。

公开(公告)号：US07603232B2

公开(公告)日：2009-10-13

申请号：US11636320

申请日：2006-12-08

申请人： Cheon-Sik Sin ,  Seong-Pal Lee

发明人： Cheon-Sik Sin ,  Seong-Pal Lee

IPC分类号： G01C21/00

CPC分类号： G01C21/00

摘要： A vehicle position information transmitter via satellite, a method thereof, a vehicle position tracking system using the same and a method thereof are provided. The transmitter transmits vehicle position information and vehicle ID to the vehicle position information management center through the vehicle position information relay satellite if a satellite network communication state is good as the result of comparing a satellite signal intensity with a mobile communication signal intensity, or transmits vehicle position information and vehicle ID to the vehicle position information management center through the terrestrial network if a terrestrial network communication state is good as the result of comparing a satellite signal intensity with a mobile communication signal intensity.

摘要翻译： 提供了一种通过卫星的车辆位置信息发送器，其方法，使用其的车辆位置跟踪系统及其方法。 作为卫星信号强度与移动通信信号强度进行比较的结果，如果卫星网络通信状态良好，则发射机通过车辆位置信息中继卫星将车辆位置信息和车辆ID发送到车辆位置信息管理中心，或者发送车辆 作为将卫星信号强度与移动通信信号强度进行比较的结果，如果地面网络通信状态良好，则通过地面网络向车辆位置信息管理中心发送位置信息和车辆ID。

公开(公告)号：US20070149119A1

公开(公告)日：2007-06-28

申请号：US10579893

申请日：2004-11-18

申请人： Jin-Ho Jo ,  Kyung-Soo Choi ,  Jong-Won Eun ,  Seong-Pal Lee

发明人： Jin-Ho Jo ,  Kyung-Soo Choi ,  Jong-Won Eun ,  Seong-Pal Lee

IPC分类号： H04B7/185

CPC分类号： H04B7/18515

摘要： Provided are an apparatus for controlling a switch of a satellite transponder for multibeam communication, and a method thereof. The apparatus and method can increase output efficiency of communicated satellite electric wave signals and reuse frequencies in one-to-one earth station communication or a one-to-multi earth station communication. The apparatus includes: an earth control station interfacing block for receiving and processing commands from an earth control station, collecting operation states of the switch controlling apparatus and reporting them to the earth control station; a reference frequency generating block for generating a reference clock needed to operate the switch controlling apparatus and generating a reference frequency based on the reference clock; and a switch controlling block for reading contents of a memory storing a switching sequence periodically, detecting and correcting errors of the contents to generate a switch control signal, and transmitting the signal to a radio frequency switch.

摘要翻译： 提供一种用于控制用于多波束通信的卫星转发器的开关的装置及其方法。 该装置和方法可以提高一对一地球站通信或一对多地球站通信中传送的卫星电波信号和重用频率的输出效率。 该装置包括：地面控制站接口块，用于接收和处理来自地球控制站的命令，收集开关控制装置的操作状态并将其报告给地面控制站; 用于产生操作开关控制装置所需的参考时钟并基于参考时钟产生参考频率的参考频率产生模块; 以及用于周期性地读取存储切换序列的存储器的内容的开关控制块，检测和校正内容的错误以产生开关控制信号，并将该信号发送到射频开关。

公开(公告)号：US20050128137A1

公开(公告)日：2005-06-16

申请号：US11008910

申请日：2004-12-10

申请人： Jeom-Hun Lee ,  Jong-Won Eun ,  Seong-Pal Lee

发明人： Jeom-Hun Lee ,  Jong-Won Eun ,  Seong-Pal Lee

IPC分类号： H01Q3/00 ,  H01Q1/12 ,  H01Q25/02 ,  G01S7/40

CPC分类号： H01Q25/02 ,  H01Q1/125 ,  H01Q1/1257

摘要： Provided is an antenna aligning apparatus for near-field measurement, which can perform alignment between a measurement target antenna and a probe antenna precisely by using an antenna pattern and detecting coordinates of the least error. The antenna aligning apparatus includes: a receiving antenna, a signal dividing means, a vertical polarization port, a horizontal polarization port, a first amplitude/phase detector, a second amplitude/phase detector, a coordinate determining means for, and a position adjuster.

摘要翻译： 提供一种用于近场测量的天线对​​准装置，其可以通过使用天线方向图和检测最小误差的坐标来精确地执行测量目标天线和探测天线之间的对准。 天线对准装置包括：接收天线，信号分割装置，垂直偏振端口，水平极化端口，第一幅度/相位检测器，第二幅度/相位检测器，坐标确定装置和位置调节器。