公开(公告)号：WO2010103092A3

公开(公告)日：2011-02-17

申请号：PCT/EP2010053143

申请日：2010-03-11

Applicant: ASTRIUM LTD ,  LEONG CHIOK KENG ,  BROWN STEPHEN PHILLIP ,  HUGHES ROBERT JULIAN FRANCIS ,  CRAIG ANTHONY DUNCAN

Inventor： LEONG CHIOK KENG ,  BROWN STEPHEN PHILLIP ,  HUGHES ROBERT JULIAN FRANCIS ,  CRAIG ANTHONY DUNCAN

IPC: H04B7/185

CPC classification number: H04B7/185 ,  H04B7/18515 ,  H04B7/1858

Abstract: An apparatus for a satellite communication system is provided, the apparatus comprises: means for monitoring a plurality of frequency channels demultiplexed from a signal comprising one or more carriers; means for identifying at least one frequency channel of the plurality of frequency channels comprising interference; and means for removing the identified at least one frequency channel before the one or more carriers are reformed. By removing the frequency channels comprising interference, the signal-to-noise ratio of a carrier can be improved. Also, if the interference occurs within a carrier, the carrier is usable as long as the removed frequency channels are considerably narrower than the carrier.

Abstract translation: 提供了一种用于卫星通信系统的装置，该装置包括：用于监视从包括一个或多个载波的信号中解复用的多个频率信道的装置; 用于识别包括干扰的所述多个频道中的至少一个频道的装置; 以及用于在所述一个或多个载波被重组之前去除所识别的至少一个频率信道的装置。 通过去除包含干扰的频道，能够提高载波的信噪比。 此外，如果在载波内发生干扰，则载波可用，只要移除的频道相对于载波相当窄。

公开(公告)号：WO2008139219A3

公开(公告)日：2009-01-08

申请号：PCT/GB2008050329

申请日：2008-05-06

Applicant: ASTRIUM LTD ,  BISHOP ANDREW MARK ,  LEONG CHIOK KENG

Inventor： BISHOP ANDREW MARK ,  LEONG CHIOK KENG

IPC: H04B7/08

CPC classification number: H04B7/086 ,  H04B7/0617 ,  H04B7/18515

Abstract: The invention relates to the implementation of a digital signal processor that is required to process a large number of narrowband analogue input or output signals. Analogue processing is performed to combine multiple analogue signals together (with non-overlapping frequency bands) into a composite signal which is fed to a single analogue to digital converter. These signals come from different sources and would in a conventional implementation use individual converters. Analogue signal processing is used outside of the digital signal processor and digital processing is used inside to enable the original analogue signals to be reconstructed in the digital domain in the same format as if individual converters have been used. A similar technique can be applied to digital to analogue conversion interfaceswhere a digital combining operation is performed to combine digital sub-band signals into a single composite signal, prior to input to a single digital-to-analogue(DAC) converter for conversion to the analogue domain and subsequently to an analogue splitter device for separation into a plurality of analogue signals.Hence, the technique can be implemented in both transmitter and receiver systems.

Abstract translation: 本发明涉及处理大量窄带模拟输入或输出信号所需的数字信号处理器的实现。 执行模拟处理以将多个模拟信号（非重叠频带）组合成复合信号，该复合信号被馈送到单个模数转换器。 这些信号来自不同的来源，并且在常规实施中将使用单独的转换器。 在数字信号处理器之外使用模拟信号处理，并且在内部使用数字处理，以使原始模拟信号能够以与使用各个转换器相同的格式在数字域中重构。 类似的技术可以应用于数模转换接口，其中执行数字组合操作以将数字子带信号组合成单个复合信号，然后输入到单个数模转换器（DAC）转换为 模拟域，随后到用于分离成多个模拟信号的模拟分路器装置。因此，该技术可以在发射机和接收机系统中实现。

公开(公告)号：WO03014762A2

公开(公告)日：2003-02-20

申请号：PCT/GB0203503

申请日：2002-07-30

Applicant: ASTRIUM LTD ,  NENDICK VICTOR

Inventor： NENDICK VICTOR

IPC: G01S7/02 ,  G01S7/03 ,  G01S7/292 ,  G01S7/36

CPC classification number: G01S7/021 ,  G01S7/032 ,  G01S7/292 ,  G01S7/36

Abstract: A signal separating system (1) comprises a frequency conversion element (3), a dynamic filter component (4) with associated coherent stop slot and non-coherent passband, optionally a signal wave enhancer (7) with bypass, and a frequency reconversion element (8). In operation of the system, mixed incoming signals (12) (cw or pulse signals) having known interference and unknown emission components can be effectively separated, permitting a virtually instantaneous separation of the known interference from the unknown emissions and permitting an unobscured monitoring and/or characterisation of the extracted unknown emissions (21), if desired. The arrangement bears definite advantage over known arrangements and retains utility for various frequency/agile or multiple or non-agile unknown signal applications.

Abstract translation: 信号分离系统（1）包括频率转换元件（3），具有相关联的相干停止时隙和非相干通带的动态滤波器元件（4），可选地具有旁路的信号波增强器（7）和频率再转换元件 （8）。 在系统的操作中，可以有效地分离具有已知干扰和未知发射分量的混合输入信号（12）（cw或脉冲信号），从而允许将已知干扰与未知排放物实际上瞬时分离并允许视觉上的监视和/ 或所提取的未知排放物的特征（21）。 该装置比已知布置具有明确的优点，并且保持用于各种频率/敏捷或多个或非敏捷未知信号应用的效用。

公开(公告)号：WO2014001021A2

公开(公告)日：2014-01-03

申请号：PCT/EP2013061297

申请日：2013-05-31

Applicant: ASTRIUM LTD

Inventor： TURNER MICHAEL CHARLES

IPC: G01S19/21

CPC classification number: H04B1/707 ,  G01S19/215 ,  H04B7/18523

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2013000851A2

公开(公告)日：2013-01-03

申请号：PCT/EP2012062198

申请日：2012-06-25

Applicant: ASTRIUM LTD ,  NORRIDGE PAUL STEPHEN ,  SULLIVAN WAYNE ,  COLLIN MIKAEL STIG

Inventor： NORRIDGE PAUL STEPHEN ,  SULLIVAN WAYNE ,  COLLIN MIKAEL STIG

CPC classification number: H04L49/9042 ,  H04L45/34 ,  H04L45/74 ,  H04L67/12

Abstract: An apparatus for use in a SpaceWire-based network is configured to send and receive data packets, and process data included in a received data packet. A header of the received data packet is stored in a buffer whilst the data is being processed, a processed data packet including the stored header and the processed data is generated, and the processed data packet is transmitted. The header of the received data packet may be modified, and the modified header attached to the processed data to generate the processed data packet. A boundary between header and data fields of the received data packet may be identified based on a predefined marker. When the data packet is received via a first port, the processed data packet may be transmitted via the first port, or may be transmitted via a second port. The second port may be selected from a plurality of available ports based on address information in the header of the received data packet.

Abstract translation: 用于基于SpaceWire的网络中的设备被配置为发送和接收数据分组，并且处理包括在接收到的数据分组中的数据。 在处理数据的同时，接收到的数据分组的头部被存储在缓冲器中，生成包括存储的头部和处理后的数据的处理后的数据分组，并且处理后的数据分组被发送。 接收到的数据分组的头部可以被修改，并且修改的头部被附加到处理的数据以生成处理的数据分组。 接收到的数据分组的报头和数据字段之间的边界可以基于预定标记来识别。 当经由第一端口接收到数据分组时，经处理的数据分组可以经由第一端口被发送，或者可以经由第二端口被发送。 基于接收到的数据分组的报头中的地址信息，可以从多个可用端口中选择第二端口。

公开(公告)号：WO2010055090A3

公开(公告)日：2010-09-30

申请号：PCT/EP2009065046

申请日：2009-11-12

Applicant: ASTRIUM LTD ,  NORRIDGE PAUL STEPHEN ,  HOWE DAVID MICHAEL ,  CRAIG ANTONY DUNCAN

Inventor： NORRIDGE PAUL STEPHEN ,  HOWE DAVID MICHAEL ,  CRAIG ANTONY DUNCAN

IPC: H04B7/204 ,  H04B7/185

CPC classification number: H01Q3/30 ,  H01Q3/2605 ,  H01Q3/2611 ,  H04B7/0408 ,  H04B7/18515 ,  H04B7/2041 ,  H04L27/2601

Abstract: The invention relates to active interference suppression in a satellite communication system, particularly but not exclusively to an apparatus and method for using active interference suppression in order to suppress co-channel interference between user signals in the communication system. The communication system includes a receive or transmit antenna having a plurality of antenna elements, each antenna element associated with a respective antenna element signal. The method includes the steps of calculating complex weighting values for one or more of a plurality of beam signals, adjusting the beam signals in accordance with the calculated complex weighting values and cancelling co-channel interference in at least one of the beam signals using the one or more adjusted derived beam signals to provide an interference suppressed output signal. The complex weighting values can be calculated based on a constant modulus algorithm.

Abstract translation: 本发明涉及卫星通信系统中的主动干扰抑制，特别地但不排他地涉及用于使用主动干扰抑制以抑制通信系统中的用户信号之间的同频干扰的装置和方法。 通信系统包括具有多个天线元件的接收或发射天线，每个天线元件与相应的天线元件信号相关联。 该方法包括以下步骤：计算多个波束信号中的一个或多个波束信号的复加权值，根据所计算的复加权值调整波束信号，并使用该一个波束信号在至少一个波束信号中消除同信道干扰 或更多调整的导出波束信号以提供干扰抑制的输出信号。 可以基于恒模算法计算复加权值。

公开(公告)号：WO2004051805A3

公开(公告)日：2004-08-05

申请号：PCT/GB0305195

申请日：2003-11-27

Applicant: ASTRIUM LTD ,  NOTTER MICHAEL JOHN

Inventor： NOTTER MICHAEL JOHN

IPC: H01Q21/06 ,  H01Q21/20

CPC classification number: H01Q21/06 ,  H01Q21/20

Abstract: An inventive rhombic antenna array structure is arranged to form a pyramid and is designed to operate with a beam forming network, enabling s shaped radiation patterns to be produced over a predetermined coverage/range. The resultant pyramid configuration advantageously has high inherent rigidity, providing scope for lightweight construction techniques. The antenna array structure finds wide application in space-based to systems as well as in ground-based systems.

Abstract translation: 本发明的菱形天线阵列结构被布置成形成金字塔并且被设计成与波束形成网络一起操作，使得能够在预定覆盖/范围上产生S形辐射图。 所得到的金字塔结构有利地具有高的固有刚度，为轻型施工技术提供了空间。 天线阵列结构在基于空间的系统和基于地面的系统中广泛应用。

公开(公告)号：WO2011045251A3

公开(公告)日：2011-06-30

申请号：PCT/EP2010065141

申请日：2010-10-08

Applicant: ASTRIUM LTD ,  LESTER DONALD ,  MACMANUS NIALL ANDREW

Inventor： LESTER DONALD ,  MACMANUS NIALL ANDREW

IPC: H04B7/185

CPC classification number: H04B7/18523 ,  H04H60/90 ,  H04H2201/70 ,  H04N7/17318 ,  H04N21/2543 ,  H04N21/44222 ,  H04N21/6143 ,  H04N21/6193 ,  H04N21/6582

Abstract: A terminal for communicating with a communication satellite A terminal comprising: a first transceiver for communicating with at least one device in a short range network; a second transceiver for communicating with a geostationary communication satellite in a network deploying a plurality of forward channels for the communication satellite to transmit data to said terminal and a plurality of return channels for the terminal to transmit data to said communication satellite, the second transceiver being configured to transmit data from said at least one device in one of said plurality of return channels. The at least one device may comprise a plurality of utility meters and other sensors. A large system comprising a plurality of the terminals, a communication satellite and a data authority may provide a system for collecting utility meter readings across a geographical region.

Abstract translation: 一种用于与通信卫星通信的终端一种终端，包括：用于与短距离网络中的至少一个设备进行通信的第一收发器; 第二收发器，用于在部署用于通信卫星的多个前向信道的网络中与对地静止通信卫星进行通信，以向所述终端发送数据;以及多个返回信道，用于终端向所述通信卫星发送数据，第二收发信机 被配置为从所述多个返回信道之一中的所述至少一个设备发送数据。 所述至少一个装置可以包括多个公用事业计量表和其它传感器。 包括多个终端的大型系统，通信卫星和数据机构可以提供用于在地理区域上收集公用事业仪表读数的系统。

公开(公告)号：WO2010097349A3

公开(公告)日：2010-11-25

申请号：PCT/EP2010052167

申请日：2010-02-19

Applicant: ASTRIUM LTD ,  BROWN STEPHEN PHILLIP ,  HUGHES ROBERT JULIAN FRANCIS ,  CRAIG ANTONY DUNCAN

Inventor： BROWN STEPHEN PHILLIP ,  HUGHES ROBERT JULIAN FRANCIS ,  CRAIG ANTONY DUNCAN

IPC: H04B7/185

CPC classification number: H04B7/185 ,  H04B7/18543

Abstract: There is provided an apparatus for a satellite communication system comprising: means for determining at least one out of a phase offset for a frequency channel of a plurality of frequency channels demultiplexed from a carrier to compensate for group delay variation within the carrier and a gain offset for the frequency channel to compensate for gain variation within the carrier; and means for applying the determined at least one out of a phase offset and a gain offset to the frequency channel before the carrier is reformed from said plurality of frequency channels. The invention therefore provides a way of digitally compensating for any undesired gain and group delay introduced by, for example, analogue components such as filters in the satellite communication system.

Abstract translation: 提供了一种用于卫星通信系统的装置，包括：用于确定从载波解复用的多个频率信道的频率信道的相位偏移中的至少一个以补偿载波内的组延迟变化和增益偏移的装置 用于频率信道补偿载波内的增益变化; 以及用于在载波从所述多个频率信道重构之前将所确定的相位偏移和增益偏移中的至少一个应用于频率信道的装置。 因此，本发明提供了一种数字补偿由诸如卫星通信系统中的滤波器的模拟组件引入的任何不需要的增益和组延迟的方法。

公开(公告)号：WO2009087418A2

公开(公告)日：2009-07-16

申请号：PCT/GB2009050013

申请日：2009-01-09

Applicant: ASTRIUM LTD ,  LESTER DONALD ,  HODSON KEVIN

Inventor： LESTER DONALD ,  HODSON KEVIN

IPC: H04B7/185

CPC classification number: H04B7/18539

Abstract: The invention provides a communication system and method of communication. The communication system includes a satellite transmitter arranged to transmit a first signal to be received within a predefined geographical area by a satellite receiver, and a terrestrial transmitter arranged to transmit a second signal to be received within the predefined geographical area by a terrestrial receiver. The first and second signals share a common radio frequency band and the system is arranged such that the first signal is received at an antenna associated with the satellite receiver at a first angle from the horizontal, the first angle being greater than a second angle from the horizontal at which the second signal is received at the antenna. This enables the satellite receiver to distinguish the first signal from the second signal. The terrestrial transmitter and receiver are also arranged to operate a multiple-input and multiple-output MIMO system enabling the terrestrial receiver to distinguish the second signal from the first signal.

Abstract translation: 本发明提供一种通信系统和通信方法。 通信系统包括卫星发射机，其被布置成通过卫星接收机发射要在预定义的地理区域内接收的第一信号;以及地面发射机，被布置成通过地面接收机发射要在预定义的地理区域内接收的第二信号。 第一和第二信号共享共同的射频频带，并且系统被布置成使得第一信号以与水平方向成第一角度的与卫星接收机相关联的天线被接收，第一角度大于从 在天线处接收第二信号的水平。 这使得卫星接收机能够将第一信号与第二信号区分开。 地面发射机和接收机还被布置成操作多输入多输出MIMO系统，使得地面接收机能够区分第二信号与第一信号。