公开(公告)号：KR1020030055623A

公开(公告)日：2003-07-04

申请号：KR1020010085648

申请日：2001-12-27

Applicant: 한국전자통신연구원

Inventor： 정철오 ,  박대인 ,  박재우 ,  은종원 ,  이성팔

IPC: H04B1/76

CPC classification number: H04B1/7156

Abstract: PURPOSE: A method for searching initial synchronization using a dummy code is provided to locate a dummy code delivery region within a frame for searching the initial synchronization, and to deliver a dummy code if traffic does not exist, to adjust the initial synchronization, thereby quickly searching the initial synchronization with simple hardware structure. CONSTITUTION: If a network synchronization transmission terminal enters a dummy code delivery region, the terminal checks a mode(405) and confirms whether a busy mode is set(406). If so, the terminal cancels delivery of a dummy code. If the busy mode is not set, the terminal checks a timer(407), and decides whether one of data regions is a dummy code region(408). If so, the terminal delivers the dummy code(409). If the region is not the dummy code region, the terminal rechecks the timer(407). The terminal checks the timer(410), and confirms whether the region is a synchronous region(411). If so, the terminal delivers a synchronous code(412).

Abstract translation: 目的：提供一种使用虚拟代码搜索初始同步的方法，用于定位用于搜索初始同步的帧内的虚拟代码传递区域，并且如果流量不存在则传递虚拟代码，以调整初始同步，从而快速 用简单的硬件结构搜索初始同步。 构成：如果网络同步传输终端进入虚拟代码传送区域，则终端检查模式（405）并确认是否设置了忙模式（406）。 如果是这样，终端取消虚拟代码的传递。 如果未设置忙模式，则终端检查定时器（407），并判定数据区域中的一个是伪码区域（408）。 如果是，则终端传送伪代码（409）。 如果该区域不是虚拟代码区域，则终端重新检查定时器（407）。 终端检查定时器（410），并确认该区域是否是同步区域（411）。 如果是，则终端提供同步代码（412）。

公开(公告)号：KR1020030046757A

公开(公告)日：2003-06-18

申请号：KR1020010077006

申请日：2001-12-06

Applicant: 한국전자통신연구원

Inventor： 이병선 ,  이정숙 ,  모희숙 ,  김재훈 ,  이성팔

IPC: G01S3/00

Abstract: PURPOSE: An apparatus and a method for automatic photography plan using track prediction of a satellite are provided to perform easily a photographing work of the satellite by predicting a track and a stance of the satellite. CONSTITUTION: A control portion(31) generates a photographing plan control signal necessary for predicting a track of a satellite. A data input portion(32) receives photographing geography data and initial track data of the satellite according to the photographing plan control signal. A satellite track prediction portion(33) predicts the tack of the satellite by using the photographing geography data and the initial track data according to photographing plan control signal. A photographing plan portion(34) makes the photographing plan including a photographing time and a stance of the satellite corresponding to the photographing time according to the photographing plan control signal.

Abstract translation: 目的：提供一种使用卫星的轨迹预测的自动摄影计划的装置和方法，用于通过预测卫星的轨迹和姿态来轻松执行卫星的拍摄工作。 构成：控制部分（31）产生预测卫星的轨道所需的拍摄计划控制信号。 数据输入部分（32）根据拍摄计划控制信号接收卫星的拍摄地理数据和初始轨道数据。 卫星轨道预测部分（33）根据拍摄计划控制信号通过使用摄影地理数据和初始轨道数据来预测卫星的粘性。 拍摄计划部分（34）根据拍摄计划控制信号使摄影计划包括与拍摄时间对应的卫星的拍摄时间和姿态。

公开(公告)号：KR1020030041663A

公开(公告)日：2003-05-27

申请号：KR1020010072727

申请日：2001-11-21

Applicant: 한국전자통신연구원

Inventor： 장병준 ,  주인권 ,  염인복 ,  이성팔

IPC: H03G3/00

Abstract: PURPOSE: An apparatus and a method for controlling a gain of an RF amplifier of a voltage driving type are provided to simplify a structure of a gain controller of the RF amplifier by controlling an attenuation portion formed with a pin diode with an input voltage. CONSTITUTION: A D/A conversion portion(31) converts a control bit signal as a digital signal to an analog signal. An offset voltage generation portion(32) generates a proper offset voltage and amplifies the generated offset voltage. An adder portion(33) adds the offset voltage according to a variation of temperature to an output voltage of the D/A conversion portion in order to drive an attenuation portion(34). The attenuation portion receives the added voltage from the adder portion in order to change a resistant value and control a gain of an RF amplifier(20).

Abstract translation: 目的：提供一种用于控制电压驱动型的RF放大器的增益的装置和方法，以通过控制由具有输入电压的pin二极管形成的衰减部分来简化RF放大器的增益控制器的结构。 构成：D / A转换部分（31）将作为数字信号的控制位信号转换为模拟信号。 偏移电压产生部分（32）产生适当的偏移电压并放大产生的偏移电压。 加法器部分（33）根据温度变化将偏移电压与D / A转换部分的输出电压相加以驱动衰减部分（34）。 衰减部分从加法器部分接收加法电压，以改变电阻值并控制RF放大器（20）的增益。

公开(公告)号：KR1020030024285A

公开(公告)日：2003-03-26

申请号：KR1020010057348

申请日：2001-09-17

Applicant: 한국전자통신연구원

Inventor： 정승우 ,  정병현 ,  박종흥 ,  이성팔

IPC: H04B7/185

CPC classification number: H03F3/602

Abstract: PURPOSE: An apparatus for judging an operating point of a high power amplifier in a satellite communication system and a method therefor are provided to judge the operating point of the high power amplifier using signal information through a DC voltage converting unit by adding the DC voltage converting unit in a channel amplifier located before the high power amplifier. CONSTITUTION: A DC voltage converting unit(360) added to a channel amplifier(25a) in a satellite repeater couples an output power of the channel amplifier(25a) and converts the output power into a DC voltage for judging an operating point and an output power level of a high power amplifier. A database in a ground control station correlates and stores a DC voltage level of the channel amplifier(25a) and an output power value of the high power amplifier according to a command step assigned in each an FGM(Fixed Gain Control) mode or an ALC(Automatic Level Control) mode as to the entire channel of the satellite repeater before launching a satellite. An RF(Radio Frequency) test device in the ground control station uses the DC voltage level measured in the DC voltage converting unit(360) as telemetry information, and judges the operating point and the output power level of the high power amplifier of a corresponding channel stored in the database after launching the satellite.

Abstract translation: 目的：提供一种用于判断卫星通信系统中的高功率放大器的工作点的装置及其方法，用于通过直流电压转换单元通过添加直流电压转换来判断高功率放大器的工作点，使用信号信息 位于高功率放大器之前的通道放大器中的单元。 构成：添加到卫星中继器中的通道放大器（25a）的直流电压转换单元（360）耦合通道放大器（25a）的输出功率，并将输出功率转换成用于判断工作点和输出的直流电压 功率级别大功率放大器。 地面控制站中的数据库根据在每个FGM（固定增益控制）模式或ALC中分配的命令步骤相关并存储通道放大器（25a）的直流电压电平和高功率放大器的输出功率值 （自动电平控制）模式，用于在发射卫星之前卫星中继器的整个通道。 地面控制站中的RF（射频）测试装置使用在直流电压转换单元（360）中测量的直流电压电平作为遥测信息，并且判断相应的高功率放大器的工作点和输出功率电平 频道在发射卫星后存储在数据库中。

公开(公告)号：KR100346784B1

公开(公告)日：2002-08-03

申请号：KR1019990035088

申请日：1999-08-24

Applicant: 한국전자통신연구원

Inventor： 권오형 ,  김명섭 ,  이성팔

IPC: H04L12/28

Abstract: 본발명은 155Mbps 급위성 ATM 송수신신호처리장치및 그방법에관한것으로서, 상기 ATM 스위치로부터입력된 ATM 신호를지상망신호처리를수행한후 위성으로전송하는지상망신호처리수단, 상기위성으로부터수신된 ATM 신호를처리하여지상망신호로 ATM 스위치에출력하는위성신호수신처리수단, 상기지상망신호처리수단및 위성신호수신처리수단의각 수단과버스로연결되어 ATM 셀의송수신을제어하고그 제어상태를표시하는송수신제어수단을구비함으로써, 위성을이용한 155Mbps급버스트모드(burst mode) 신호송수신이가능하게되어기존에지상망에서만가능했던초고속 ATM 위성통신이가능하게되었으며, 이는기술적, 산업적파급효과가매우클 것으로기대된다.

公开(公告)号：KR100309682B1

公开(公告)日：2001-09-26

申请号：KR1019990009168

申请日：1999-03-18

Applicant: 한국전자통신연구원

Inventor： 박찬구 ,  전순익 ,  이성팔

IPC: H01Q3/34 ,  H01Q3/32 ,  H01Q23/00

CPC classification number: H01Q3/06 ,  H01Q1/3275 ,  H01Q3/26

Abstract: 본발명은차량에탑재되는위성방송(또는위성통신수신신호)을수신하기위한안테나의위성추적장치및 이를운용하기위한알고리즘에관한것으로, 특히, 이동체의이동방향에따라상대적으로변동하는위성방향을추적하여위성전파를수신하는기능을보유한안테나의위성추적시스템및 그제어방법에관한것이다. 본발명은앙각방향으로는전자적인빔을이용하여위성방향을추적하고방위각방향으로는안테나를기계적으로운동시켜위성방향을추적하는혼합추적방법으로서특히방위각방향의기계적인추적오차를보상하고기계적인추적방법의성능을개선하기위하여전자적인빔을이용한추적기능을앙각방향뿐만아니라다소의방위각방향에서도가능하게제어하는위성추적장치및 그제어방법을제시한다. 본발명에서는추적성능에서전자적인추적방법의고속추적성능의이점과위성추적장치의구조적효율에서기계적인추적방법의간단한구조의효율을갖는안테나의위성추적장치및 그제어방법을제안한다.

公开(公告)号：KR1020010026643A

公开(公告)日：2001-04-06

申请号：KR1019990038044

申请日：1999-09-08

Applicant: 한국전자통신연구원

Inventor： 표철식 ,  전순익 ,  이성팔

IPC: H01Q13/08

Abstract: PURPOSE: A broadband aperture coupling microstrip patch antenna is provided to improve a band width of the antenna and to easily provide power. CONSTITUTION: A microstrip patch(1) is formed on a lower surface within the first dielectric(2). A conductor(4) is formed to separate from the microstrip patch(1) at a predetermined distance. The conductor(4) also has an aperture(5) made to supply power to the patch. A low dielectric(3) is located between the microstrip patch(1) and the conductor(4). A ground surface(4) is formed to separate from the conductor(4) at a predetermined distance. A line for supplying electric power(6) is formed between the conductor(4) and the ground surface(4). Additionally, the line for supplying electric power(6) is connected with a transmitting/receiving device so as to provide a signal to the aperture(5). Second dielectrics(7,8) are formed between the conductor(4) and the ground surface(4) to cover the line for supplying electric power(6).

Abstract translation: 目的：提供宽带光圈耦合微带贴片天线，以改善天线的带宽并轻松提供功率。 构成：在第一电介质（2）内的下表面上形成微带贴片（1）。 导体（4）形成为以预定距离与微带贴片（1）分离。 导体（4）还具有用于向贴片供电的孔（5）。 低电介质（3）位于微带贴片（1）和导体（4）之间。 地面（4）形成为以预定距离与导体（4）分离。 在导体（4）和接地面（4）之间形成用于供电的线（6）。 此外，用于供电的线路（6）与发射/接收装置连接，以向孔（5）提供信号。 第二电介质（7,8）形成在导体（4）和接地表面（4）之间以覆盖用于供电的线（6）。

公开(公告)号：KR100277827B1

公开(公告)日：2001-01-15

申请号：KR1019980048434

申请日：1998-11-12

Applicant: 한국전자통신연구원

Inventor： 박찬구 ,  이장원 ,  전순익 ,  이성팔

IPC: G01S5/02

Abstract: 본 발명은 이동체에 탑재되는 능동 안테나에 있어서, 이동체가 정지 또는 이동중에 위성으로부터 오는 신호를 수신할 수 있도록 이동체의 능동 안테나를 제어하는 방법을 제공하는 데 그 목적이 있다.
본 발명에 따르면, 이동체의 능동 안테나를 제어하기 위하여, 위성 초기 서치 방법, 안테나 측정에 의한 자동 추적 방법, 위성 반복 서치 방법 및 상기 3 가지 방법이 결합된 능동 안테나 시스템의 위성 자동 추적 방법이 제공된다.

公开(公告)号：KR1020000032461A

公开(公告)日：2000-06-15

申请号：KR1019980048915

申请日：1998-11-14

Applicant: 한국전자통신연구원

Inventor： 김명섭 ,  성진숙 ,  이성팔

IPC: H04L27/227

CPC classification number: H04L27/06 ,  H04L27/38

Abstract: PURPOSE: An AGC(Automatic Gain Control) circuit and method in satellite burst modem for high speed data transmission is provided to decrease a complexity in an embodiment by alternating a detecting characteristic in a receiving signal detector into a simple algorithm. CONSTITUTION: A multiplier(102) multiplies a controller gain to a received input signal(101). A gain detector(103) alternates a size of a received signal as a real value of the received signal in a complex number to detect a gain. A comparator(104) compares a gain value outputted from the gain detector(103) with an object output value. An adjusting device(105) adjusts an acquisition performance. An integrator(106) stores a value in a normal state. An initial value storing device(107) stores an initial value.

Abstract translation: 目的：提供用于高速数据传输的卫星突发调制解调器中的AGC（自动增益控制）电路和方法，以通过将接收信号检测器中的检测特性交替为简单算法来降低实施例中的复杂性。 构成：乘法器（102）将控制器增益与接收到的输入信号（101）相乘。 增益检测器（103）将接收信号的大小作为接收信号的实数值以复数进行交替以检测增益。 比较器（104）将从增益检测器（103）输出的增益值与对象输出值进行比较。 调整装置（105）调整采集性能。 积分器（106）将值存储在正常状态。 初始值存储装置（107）存储初始值。

公开(公告)号：KR100791410B1

公开(公告)日：2008-01-07

申请号：KR1020060124006

申请日：2006-12-07

Applicant: 한국전자통신연구원

Inventor： 신천식 ,  최경수 ,  이성팔

IPC: H04W16/02 ,  H04B1/48

CPC classification number: H04W16/02 ,  H04B1/48

Abstract: A satellite control apparatus for improving signal degradation on a satellite link, a frequency path conversion system using the same, and a method thereof are provided to enhance the link availability of a satellite communication system and increase the revitalization and utilization of the satellite communication system through different frequencies according to weather conditions on a satellite link and solving a problem of signal degradation due to a frequency in use. A satellite control apparatus(100) for improving signal degradation on a satellite link comprises a carrier level monitoring part(130) and a frequency switch control management part(120). The carrier level monitoring part(130) receives a signal transmitted through satellite communication and calculates how much the signal has been attenuated due to signal degradation. The frequency switch control management part(120) judges the changeover of a frequency in use according to the signal attenuation extent outputted from the carrier level monitoring part(130). If frequency switching is required, the frequency switch control management part(120) creates and transmits a frequency changeover command.

Abstract translation: 提供了一种用于改善卫星链路信号衰减的卫星控制装置，使用该卫星链路的频道转换系统及其方法，以增强卫星通信系统的链路可用性，并通过以下方式增加卫星通信系统的振兴和利用 根据天气条件在卫星链路上的不同频率，并解决由于使用频率引起的信号劣化的问题。 用于改善卫星链路信号劣化的卫星控制装置（100）包括载波电平监视部分（130）和频率切换控制管理部分（120）。 载波电平监视部分（130）接收通过卫星通信发送的信号，并且计算由于信号劣化而使信号衰减了多少。 频率切换控制管理部（120）根据从载波电平监视部（130）输出的信号衰减程度来判断使用频率的切换。 如果需要频率切换，则频率切换控制管理部（120）创建并发送频率切换命令。