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    • 71. 发明申请
    • AUTHENTICATION OF SATELLITE NAVIGATION SIGNALS
    • 卫星导航信号的验证
    • WO2014001021A2
    • 2014-01-03
    • PCT/EP2013061297
    • 2013-05-31
    • ASTRIUM LTD
    • TURNER MICHAEL CHARLES
    • G01S19/21
    • H04B1/707G01S19/215H04B7/18523
    • A method and apparatus for providing information about an encrypted signal transmitted by a satellite in a satellite navigation system are disclosed. A data sequence of the encrypted signal as transmitted is obtained, a signal sample is extracted from the data sequence, the signal sample including a part of the data sequence having a length less than a total length of the data sequence, and the signal sample and information about when the data included in the signal sample was transmitted by the satellite are transmitted, as the encrypted signal information, to a receiver for use in the satellite navigation system. A method and apparatus for authenticating an unencrypted signal based on the encrypted signal information are also disclosed. In particular, a time offset between an internal clock of the receiver and an internal clock of the satellite is obtained based on the unencrypted signal, the encrypted signal information is received, a portion of the received encrypted signal is identified that is expected to correspond to the signal sample based on the obtained time offset, the identified portion is correlated with the signal sample, and it is determined that the received unencrypted signal is authentic if a predetermined threshold correlation is obtained.
    • 公开了一种用于提供卫星在卫星导航系统中发送的加密信号的信息的方法和装置。 获得发送的加密信号的数据序列,从数据序列中提取信号样本,信号样本包括长度小于数据序列的总长度的数据序列的一部分,信号样本和 将由卫星发送的信号样本中的数据何时作为加密信号信息发送到卫星导航系统中使用的接收机。 还公开了一种基于加密信号信息来认证未加密信号的方法和装置。 特别地,基于未加密的信号获得接收机的内部时钟和卫星的内部时钟之间的时间偏移,接收到加密的信号信息,识别出接收的加密信号的一部分,该部分预期对应于 基于获得的时间偏移的信号样本,所识别的部分与信号样本相关,并且如果获得预定的阈值相关性,则确定接收的未加密信号是可信的。
    • 73. 发明申请
    • 멀티 위성 수신용 자동 포지셔닝 안테나 시스템 및 위성 추적 방법
    • 用于多卫星接收的自动定位天线系统及跟踪卫星的方法
    • WO2013065890A1
    • 2013-05-10
    • PCT/KR2011/008441
    • 2011-11-08
    • 주식회사 위월드박찬구
    • 박찬구
    • G01S19/01
    • H04B7/18523H01Q1/288H01Q21/28H04B1/16
    • 본 발명은 방송용 LNB와 별도로 설치되는 위성 추적용 LNB를 통하여 위성의 위치를 추적하고 추적되는 위성 정보를 통하여 현재 위치를 파악하여 안테나를 타겟 위성 위치로 이동시켜 위성 방송을 신속하게 수신할 수 있도록 하는 멀티 위성 수신용 자동 포지셔닝 안테나 시스템 및 위성 추적 방법에 관한 것이다. 본 발명에 따른 멀티 위성 수신용 자동 포지셔닝 안테나 시스템은 위성 방송 신호를 수신하는 방송용 LNB(121)와, 위성 추적용 위성 신호를 수신하는 위성 추적용 LNB(122)가 안테나(110)에 결합된 안테나부(100)와; 상기 안테나부(100)의 방송용 LNB(121) 또는 위성 추적용 LNB(122)를 선택하는 스위칭부(200)와; 상기 위성 추적용 LNB(122)를 통하여 수신되는 위성 신호를 분석하여 위성을 추적하고, 추적되는 위성 정보를 이용하여 안테나부(100)가 위성 방향을 향하도록 제어하는 제어부(300)와; 상기 제어부(300)의 제어에 따라 안테나부(100)를 이동시키는 구동부(400);를 포함하여 이루어지는 것을 특징으로 한다.
    • 本发明涉及一种用于多卫星接收的自动定位天线系统以及跟踪卫星的方法,该方法可以通过与广播LNB分开安装的卫​​星跟踪LNB跟踪卫星的位置,识别当前位置 通过跟踪的卫星信息,并将天线移动到目标卫星的位置,以快速接收卫星广播。 用于多卫星接收的自动定位天线系统的特征在于包括:接收卫星广播信号的广播LNB(121)和接收用于跟踪卫星的卫星信号的卫星跟踪LNB(122)的天线部分(100) 耦合到天线(110); 选择天线部分(100)的广播LNB(121)或卫星跟踪LNB(122)的切换部分(200); 分析通过卫星跟踪LNB(122)接收的卫星轨道跟踪卫星并通过使用跟踪的卫星信息使天线部分(100)面对卫星的控制部分(300); 以及响应于控制部分(300)的控制而使天线部分(100)移动的驱动部分(400)。
    • 77. 发明申请
    • DEVICE, METHOD AND COMPUTER PROGRAM FOR TRANSMITTING AN INFORMATION SIGNAL COMPRISING SEVERAL TRANSMIT SIGNALS
    • 用于发送包含几个发送信号的信息信号的设备,方法和计算机程序
    • WO2007048597A1
    • 2007-05-03
    • PCT/EP2006/010298
    • 2006-10-25
    • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.EBERLEIN, ErnstHEUBERGER, Albert
    • EBERLEIN, ErnstHEUBERGER, Albert
    • H04B7/26H04B7/185
    • H04B7/2621H04B7/06H04B7/18523H04B7/208H04L27/2602H04L27/2633
    • The present invention provides a device for transmitting an information signal comprising several transmit signals with a modulator for generating a first transmit signal and a second transmit signal. The first transmit signal is transmittable via a first spatial emitter, and the second transmit signal is transmittable via a second spatial emitter. The modulator comprises an OFDM control stage designed to load a first group of OFDM carriers with first information to generate the first transmit signal, and to load a second group of OFDM carriers with second information to generate the second transmit signal. The first group of OFDM carriers differs from the second group of OFDM carriers, and the first information differs from the second information. The present invention further provides a corresponding method and a computer program for transmitting an information signal. The present invention thus allows particularly resource-efficient frequency planning and is very well suited for the use as part of a broadcast emission via a satellite.
    • 本发明提供了一种用于利用用于产生第一发射信号和第二发射信号的调制器发射包括若干发射信号的信息信号的装置。 第一发射信号可经由第一空间发射器传输,并且第二发射信号可经由第二空间发射器传输。 调制器包括OFDM控制级,被设计为用第一信息加载第一组OFDM载波以产生第一发射信号,并且用第二信息加载第二组OFDM载波以产生第二发射信号。 第一组OFDM载波与第二组OFDM载波不同,第一信息与第二信息不同。 本发明还提供了一种用于发送信息信号的相应方法和计算机程序。 因此,本发明允许特别资源有效的频率规划,并且非常适合于作为通过卫星的广播发射的一部分的使用。
    • 78. 发明申请
    • MULTIPLEXED AUDIO AND DATA TRANSMISSION OVER DIGITAL CONTENT DELIVERY CHANNELS
    • 通过数字内容传输通道进行多路复用的音频和数据传输
    • WO2005043881A3
    • 2006-07-06
    • PCT/US2004033549
    • 2004-10-12
    • SIRIUS SATELLITE RADIO INC
    • AKTURAN RIZA DR
    • H04J3/08H04B3/02H04B3/04H04B7/185H04B7/212H04H1/00H04H20/30H04H20/74H04J3/00H04N20060101
    • H04B7/18523H04H20/30H04H20/74
    • Systems and methods for multiplexing content from variable-rate audio channels with content from one or more data channels uses an audio/data multiplexing module. This module time-multiplexes multiple audio and data channels into a single data channel output, and send it to a logical channel. The audio and data packets in the multiplexed signal are tagged on packets of audio or data information within the multiplexed signal. Receive modules receive and select a single logical channel for output. These modules include audio/data de-multiplexing modules that receive and de-multiplex the multiplexed audio and data content from a logical channel into separate paths, where the users of such systems can listen to audio content while at the same time receiving data content; such as artist pictures or weather information.
    • 用于将来自可变速率音频信道的内容与来自一个或多个数据信道的内容复用的系统和方法使用音频/数据复用模块。 该模块将多个音频和数据通道时分复用为单个数据通道输出,并将其发送到逻辑通道。 复用信号中的音频和数据分组被标记在多路复用信号内的音频或数据信息分组上。 接收模块接收并选择单个逻辑通道进行输出。 这些模块包括音频/数据解复用模块,其将多路复用的音频和数据内容从逻辑信道接收和解复用为单独的路径,其中这些系统的用户可以在同时接收数据内容的同时收听音频内容; 如艺术家图片或天气信息。
    • 79. 发明申请
    • MULTIPLEXED AUDIO AND DATA TRANSMISSION OVER DIGITAL CONTENT DELIVERY CHANNELS
    • 通过数字内容传送通道进行多路复用的音频和数据传输
    • WO2005043881A2
    • 2005-05-12
    • PCT/US2004/033549
    • 2004-10-12
    • SIRIUS SATELLITE RADIO INC.
    • AKTURAN, Riza, Dr.
    • H04N
    • H04B7/18523H04H20/30H04H20/74
    • Systems and methods for multiplexing content from variable-rate audio channels with content from one or more data channels uses an audio/data multiplexing module. This module time-multiplexes multiple audio and data channels into a single data channel output, and send it to a logical channel. The audio and data packets in the multiplexed signal are tagged on packets of audio or data information within the multiplexed signal. Receive modules receive and select a single logical channel for output. These modules include audio/data de-multiplexing modules that receive and de-multiplex the multiplexed audio and data content from a logical channel into separate paths, where the users of such systems can listen to audio content while at the same time receiving data content; such as artist pictures or weather information.
    • 用于将来自可变速率音频信道的内容与来自一个或多个数据信道的内容复用的系统和方法使用音频/数据复用模块。 该模块将多个音频和数据通道时分复用为单个数据通道输出,并将其发送到逻辑通道。 复用信号中的音频和数据分组被标记在多路复用信号内的音频或数据信息分组上。 接收模块接收并选择单个逻辑通道进行输出。 这些模块包括音频/数据解复用模块,其将多路复用的音频和数据内容从逻辑信道接收和解复用为单独的路径,其中这些系统的用户可以在同时接收数据内容的同时收听音频内容; 例如艺术家图片或天气信息。
    • 80. 发明申请
    • APPARATUS AND METHOD FOR ENABLING USE OF LOW POWER SATELLITES, SUCH AS C-BAND, TO BROADCAST TO MOBILE AND NON-DIRECTIONAL RECEIVERS, AND SIGNAL DESIGN THEREFOR
    • 使用低功耗卫星,如C带,广播到移动和非方向接收机的装置和方法及其信令设计
    • WO2004045104A1
    • 2004-05-27
    • PCT/US2003/032742
    • 2003-11-06
    • FORCE, Charles, T.HORAN, Stephen, J.HEROLD, Fred, W.
    • FORCE, Charles, T.HORAN, Stephen, J.HEROLD, Fred, W.
    • H04B7/14
    • H04B7/18523Y02D70/164Y02D70/168Y02D70/446
    • In a low power satellite broadcasting system, recovery of weak received signals is facilitated by combining a highly efficient compression technique such as Advance Audio Coding (AAC) with relatively low rate coding and error correction (8) techniques such as Recursive Systematic Convolutional Turbo Coding with Forward Error Correction (FEC). These techniques are further combined with signal spreading techniques such as DSSS CDMA or COFDM to spread the signal over a large frequency range for uplink, there permitting multiple users to share the same spectrum while avoiding interference with others, and also mitigating frequency selective fading and multi-path. Recovery of the relatively weak signals may be further facilitated by the use of low noise amplifiers (2) and conformal retro directive phased array antennas (1), and by broadcasting the same information over two time-delayed channels adding further redundancy in order to eliminate dropouts.
    • 在低功率卫星广播系统中,通过将诸如高级音频编码(AAC)的高效压缩技术与相对较低的速率编码和纠错(8)技术相结合来实现弱接收信号的恢复(8)技术,例如递归系统卷积涡轮编码, 前向纠错(FEC)。 这些技术进一步与诸如DSSS CDMA或COFDM的信号扩展技术相结合,以在上行链路的大频率范围上扩展信号,允许多个用户共享相同的频谱,同时避免与他人的干扰,并且还减轻频率选择性衰落和多 -路径。 可以通过使用低噪声放大器(2)和适形复古指令相控阵列天线(1)来进一步促进相对较弱的信号的恢复,并且通过在两个时间延迟的信道上广播相同的信息来增加进一步的冗余以消除 辍学。