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    • 2. 发明申请
    • SYSTEMS AND METHODS FOR DECODING AUTOMATIC IDENTIFICATION SYSTEM SIGNALS
    • 用于解码自动识别系统信号的系统和方法
    • US20110075602A1
    • 2011-03-31
    • US12567104
    • 2009-09-25
    • Robert PeachWeiguo Chen
    • Robert PeachWeiguo Chen
    • H04J3/08
    • G01S13/9307G01S1/68G01S5/0018G08G3/00H04B7/18513
    • A method of extracting automatic identification system (AIS) message segments from AIS signals received by a satellite. The method includes: (a) receiving AIS signals from satellite antennas; (b) generating multiple versions of the AIS signals; (c) extracting message segments contained within each of the AIS signals using one or more AIS receivers; (d) sorting the message segments by time; and (e) deleting any duplicate message segments. Multiple versions of the AIS signals may be generated by one or more of the following methods: (i) processing the AIS signals multiple times, each time with different AIS receiver parameter settings; (ii) splitting each signal into multiple signals and filtering each of the multiple signals separately; (iii) receiving multiple AIS signals and combining them with different phases and amplitudes to produce a plurality of combined AIS signals; and (iv) removing extracted message segments from the received AIS signals and reprocessing the modified AIS signals.
    • 一种从卫星接收的AIS信号中提取自动识别系统(AIS)消息段的方法。 该方法包括:(a)从卫星天线接收AIS信号; (b)产生AIS信号的多个版本; (c)使用一个或多个AIS接收机提取包含在每个AIS信号内的消息段; (d)按时间对消息片段进行排序; 和(e)删除任何重复的消息段。 可以通过以下一种或多种方法产生AIS信号的多个版本:(i)每次使用不同的AIS接收机参数设置多次处理AIS信号; (ii)将每个信号分成多个信号并分别对多个信号中的每个信号进行滤波; (iii)接收多个AIS信号并将它们与不同的相位和振幅组合以产生多个组合的AIS信号; 以及(iv)从所接收的AIS信号中去除提取出的消息段,并重新处理修改后的AIS信号。
    • 3. 发明授权
    • System and method for decoding automatic identification system signals
    • 解码自动识别系统信号的系统和方法
    • US07876865B2
    • 2011-01-25
    • US11760358
    • 2007-06-08
    • Robert Peach
    • Robert Peach
    • H03D1/00
    • G08G3/02H04B7/18513
    • Various embodiments are described herein for a system and method of detecting Automatic Identification System (AIS) signals in space and decoding these signals. In one aspect, a system for performing this function is described which includes a receiver configured to receive the plurality of AIS signals and pre-process the plurality of AIS signals to produce digital input data, and a processing unit configured to process the digital input data to identify one or more candidate AIS message signals based on Doppler offsets associated with the digital input data, determine corresponding Doppler offset estimates and time estimates of the one or more candidate AIS message signals, decode the one or more candidate AIS message signals to obtain corresponding message segments and validate the decoded message segments for proper AIS formatting.
    • 这里描述了用于检测空间中的自动识别系统(AIS)信号并对这些信号进行解码的系统和方法的各种实施例。 一方面,描述了一种用于执行该功能的系统,其包括被配置为接收多个AIS信号并预处理多个AIS信号以产生数字输入数据的接收器,以及处理单元,被配置为处理数字输入数据 基于与数字输入数据相关联的多普勒偏移来识别一个或多个候选AIS消息信号,确定一个或多个候选AIS消息信号的相应多普勒偏移估计和时间估计,对一个或多个候选AIS消息信号进行解码以获得对应的 消息段并验证解码的消息段以获得正确的AIS格式。
    • 6. 发明授权
    • Repeaters for multibeam satellites
    • 多波束卫星的中继器
    • US5822312A
    • 1998-10-13
    • US633676
    • 1996-04-17
    • Robert PeachNigel MillerBharat TailorKamal AliGary BeauchampSimon LamKen Lazaris-Brunner
    • Robert PeachNigel MillerBharat TailorKamal AliGary BeauchampSimon LamKen Lazaris-Brunner
    • H04B7/204H04B7/185
    • H04B7/2041
    • A repeater for a multibeam communications satellite combines the features of coaxial channel interbeam switching and subchannelization of some of the channels. In one embodiment described, the input radio-frequency signals from the input beams are fed through the input multiplexers to form channels. Some, but not all, channels are subsequently subchannelized for interbeam switching. In another embodiment of the invention, a portion of the incoming radio frequency signals bypasses the input demultiplexer and is filtered for noise-limiting reasons, converted down to an intermediate frequency and then subchannelized using SAW filters. The specification also teaches that digital techniques can be used to obtain the same results. Especially in the case of satellites with a large number of beams and a large number of channels, it is not necessary to have full interbeam switching of all the subchannels derived from one channel: instead, the specification proposes the use of parallel configurations of smaller, less complex switching networks.
    • 用于多波束通信卫星的中继器结合了同轴信道交织切换和某些信道的子信道化的特征。 在所描述的一个实施例中,来自输入光束的输入射频信号通过输入多路复用器馈送以形成信道。 一些但不是全部的信道随后被子信道化以进行交换。 在本发明的另一实施例中,输入射频信号的一部分绕过输入解复用器,并且由于噪声限制的原因而被滤波,转换成中频,然后使用SAW滤波器进行子信道化。 该规范还教导可以使用数字技术获得相同的结果。 特别是在具有大量波束和大量信道的卫星的情况下,不需要对从一个信道导出的所有子信道进行完全的交换机切换:相反,本说明书提出使用较小的, 较不复杂的交换网络。
    • 10. 发明授权
    • Scattering parameter calibration system and method
    • 散射参数校准系统及方法
    • US06300775B1
    • 2001-10-09
    • US09241704
    • 1999-02-02
    • Robert PeachNicholas SvenssonThai Vo
    • Robert PeachNicholas SvenssonThai Vo
    • G01R2728
    • G01R27/28G01R35/00
    • A system and method of calibrating an S parameter measurement instrument (such as a vector network analyzer) in which the number of calibrations required to fully characterize the error model of an n-port system is n/2 calibrations for an even number of ports and (n+1)/2 calibrations for an odd number of ports. Each test port in the system is involved in at least one full calibration, thus n/2 test paths are fully calibrated. For each measured test path, the error terms of the applicable error model are calculated. These error terms are then decoupled from the associated test path into error parameters that are localized to the individual test ports of the test path. Having localized the error parameters, the error model for each test port can then be treated independently from the other test ports. The error terms for the test paths that are not calibrated are then constructed using the localized error parameters for the individual test ports.
    • 校准S参数测量仪器(如矢量网络分析仪)的系统和方法,其中完全表征n端口系统的误差模型所需的校准次数为偶数个端口的n / 2校准, (n + 1)/ 2个校准。 系统中的每个测试端口都参与至少一次完全校准,因此n / 2个测试路径被完全校准。 对于每个测量的测试路径,计算适用误差模型的误差项。 然后将这些误差项从相关联的测试路径解耦到被定位到测试路径的各个测试端口的错误参数。 本地化了错误参数后,可以独立于其他测试端口对每个测试端口的错误模型进行处理。 然后使用各个测试端口的本地化错误参数构建未校准的测试路径的误差项。