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公开(公告)号：US09397761B2
公开(公告)日：2016-07-19
申请号：US13897066
申请日：2013-05-17
申请人： CRFS Limited
IPC分类号： H04B17/00 , H04B7/08 , H04W52/42 , H04B17/391
CPC分类号： H04B17/11 , H04B17/00 , H04B17/104 , H04B17/391 , H04W52/42
摘要： Apparatus for generating an RF signal for use in RF signal detection is described. The apparatus comprises at least one processor configured to generate a set of IQ data based on at least one set of weighted IQ data, each set of weighted IQ data having a respective weight and a circuit configured to generate an RF signal using the set of IQ data.
摘要翻译： 描述用于产生用于RF信号检测的RF信号的装置。 该装置包括至少一个处理器，其被配置为基于至少一组加权IQ数据生成一组IQ数据，每组加权IQ数据具有相应的权重，以及被配置为使用该IQ集合生成RF信号的电路 数据。
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公开(公告)号：US10140324B2
公开(公告)日：2018-11-27
申请号：US14879576
申请日：2015-10-09
申请人： CRFS Limited
发明人： Alistair Massarella , Daniel Timson , Stewart Hyde
IPC分类号： G06F17/30
摘要： A method for processing a primary data record, a spatial tree index and a plurality of time tree indexes is described. The method includes writing the primary data record to a primary data table, determining whether a spatial tree leaf node including location data exists and, if not, generating a spatial tree leaf node including the location data, and creating or updating spatial tree nodes connecting the spatial tree leaf node to a spatial tree root node. For spatial tree nodes including the location data, updating a respective time tree index by determining whether a time tree leaf node including time data exists and, if not, generating a time tree leaf node including the time data, and creating or updating time tree nodes connecting the time tree leaf node to a time tree root node. The time tree leaf node updated to include a pointer to the primary data record.
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公开(公告)号：US20140342675A1
公开(公告)日：2014-11-20
申请号：US13897066
申请日：2013-05-17
申请人： CRFS LIMITED
CPC分类号： H04B17/11 , H04B17/00 , H04B17/104 , H04B17/391 , H04W52/42
摘要： Apparatus for generating an RF signal for use in RF signal detection is described. The apparatus comprises at least one processor configured to generate a set of IQ data based on at least one set of weighted IQ data, each set of weighted IQ data having a respective weight and a circuit configured to generate an RF signal using the set of IQ data.
摘要翻译： 描述用于产生用于RF信号检测的RF信号的装置。 该装置包括至少一个处理器，其被配置为基于至少一组加权IQ数据生成一组IQ数据，每组加权IQ数据具有相应的权重，以及被配置为使用该IQ集合生成RF信号的电路 数据。
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公开(公告)号：US09749063B2
公开(公告)日：2017-08-29
申请号：US14891883
申请日：2014-04-30
申请人： CRFS Limited
IPC分类号： H04B17/00 , H04W52/42 , H04B17/391 , H04B17/10 , H04B17/11
CPC分类号： H04B17/11 , H04B17/00 , H04B17/104 , H04B17/391 , H04W52/42
摘要： Apparatus for generating an RF signal for use in RF signal detection is described. The apparatus comprises at least one processor configured to generate a set of IQ data based on at least one set of weighted IQ data, each set of weighted IQ data having a respective weight and a circuit configured to generate an RF signal using the set of IQ data. The at least one processor is configured to calculate each respective weight in dependence upon location of a signal detector or an antenna associated with the RF signal detector.
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公开(公告)号：US20160140153A1
公开(公告)日：2016-05-19
申请号：US14879576
申请日：2015-10-09
申请人： CRFS Limited
发明人： Alistair Massarella , Daniel Timson , Stewart Hyde
IPC分类号： G06F17/30
CPC分类号： G06F17/30327 , G06F17/30241 , G06F17/30333 , G06F17/30336 , G06F17/30339 , G06F17/30551
摘要： A method for processing a primary data record, a spatial tree index and a plurality of time tree indexes is described. The method includes writing the primary data record to a primary data table, determining whether a spatial tree leaf node including location data exists and, if not, generating a spatial tree leaf node including the location data, and creating or updating spatial tree nodes connecting the spatial tree leaf node to a spatial tree root node. For spatial tree nodes including the location data, updating a respective time tree index by determining whether a time tree leaf node including time data exists and, if not, generating a time tree leaf node including the time data, and creating or updating time tree nodes connecting the time tree leaf node to a time tree root node. The time tree leaf node updated to include a pointer to the primary data record.
摘要翻译： 描述了用于处理主数据记录，空间树索引和多个时间树索引的方法。 该方法包括将主数据记录写入主数据表，确定是否存在包括位置数据的空间树叶节点，如果不存在生成包括位置数据的空间树叶节点，以及创建或更新连接 空间树叶节点到空间树根节点。 对于包括位置数据的空间树节点，通过确定是否存在包括时间数据的时间树叶节点以及如果不是生成包括时间数据的时间叶叶节点，并且创建或更新时间树节点来更新相应的时间树索引 将时间叶叶节点连接到时间树根节点。 时间树叶节点被更新为包括指向主数据记录的指针。
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公开(公告)号：US10680669B2
公开(公告)日：2020-06-09
申请号：US15556769
申请日：2016-03-04
申请人： CRFS LIMITED
IPC分类号： H04B17/00 , H04B1/10 , H04B1/71 , G01R23/165 , H04B1/7156
摘要： A frequency discriminator is described. The frequency discriminator comprises a power splitter (2) for splitting a signal into a plurality of paths (40, 41, 42, . . . , 4n). At least two of the plurality of paths (41, 42, . . . , 4n) include respective filters (121; 122, . . . , 12n) having different frequency characteristics which are configured to provide respective filtered signals to respective power detectors (161, 162, . . . , 16n. The frequency discriminator comprises an analogue-to-digital conversion section (8) which is configured to receive values of measured powers from the power detectors, to generate digital values of measured powers and to provide the digital values of measured powers to a digital processing section (10). The digital processing section is configured to estimate a value (11) of at least one frequency in the signal in dependence on the digital values, for example the ratio of the digital values, of measured powers and on frequency responses (201, 202, . . . , 20n; FIG. 2) of the filters.
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公开(公告)号：US10571544B2
公开(公告)日：2020-02-25
申请号：US15548332
申请日：2016-02-01
申请人： CRFS LIMITED
摘要： A method of determining incident angles of Radio Frequency, RF, signals received by an antenna array comprising a plurality of antennae is described. The method comprises generating a plurality of direction finding, DF, signals based on antenna signals received from the antenna array, wherein each DF signal corresponds to a respective antenna array element and each antenna array element corresponds to one or more antennae. A plurality of DF spectra are then generated, each DF spectrum corresponding to a respective DF signal and comprising measured values of signal power at two or more given respective frequencies. An incident signal angle is calculated for each given frequency, based on the measured values of power at the frequency, the configuration of the antennae in the antenna array and antenna gain patterns corresponding to the antenna array elements.
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公开(公告)号：US20160142159A1
公开(公告)日：2016-05-19
申请号：US14891883
申请日：2014-04-30
申请人： CRFS LIMITED
CPC分类号： H04B17/11 , H04B17/00 , H04B17/104 , H04B17/391 , H04W52/42
摘要： Apparatus for generating an RF signal for use in RF signal detection is described. The apparatus comprises at least one processor configured to generate a set of IQ data based on at least one set of weighted IQ data, each set of weighted IQ data having a respective weight and a circuit configured to generate an RF signal using the set of IQ data. The at least one processor is configured to calculate each respective weight in dependence upon location of a signal detector or an antenna associated with the RF signal detector.
摘要翻译： 描述用于产生用于RF信号检测的RF信号的装置。 该装置包括至少一个处理器，其被配置为基于至少一组加权IQ数据生成一组IQ数据，每组加权IQ数据具有相应的权重，以及被配置为使用该IQ集合生成RF信号的电路 数据。 至少一个处理器被配置为根据与RF信号检测器相关联的信号检测器或天线的位置来计算每个相应的权重。
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公开(公告)号：US20180062680A1
公开(公告)日：2018-03-01
申请号：US15556769
申请日：2016-03-04
申请人： CRFS LIMITED
IPC分类号： H04B1/10 , H04B1/7156 , G01R23/165
摘要： A frequency discriminator is described. The frequency discriminator comprises a power splitter (2) for splitting a signal into a plurality of paths (40, 41, 42, . . . , 4n). At least two of the plurality of paths (41, 42, . . . , 4n) include respective filters (121; 122, . . . , 12n) having different frequency characteristics which are configured to provide respective filtered signals to respective power detectors (161, 162, . . . , 16n. The frequency discriminator comprises an analogue-to-digital conversion section (8) which is configured to receive values of measured powers from the power detectors, to generate digital values of measured powers and to provide the digital values of measured powers to a digital processing section (10). The digital processing section is configured to estimate a value (11) of at least one frequency in the signal in dependence on the digital values, for example the ratio of the digital values, of measured powers and on frequency responses (201, 202, . . . , 20n; FIG. 2) of the filters.
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公开(公告)号：US09729363B2
公开(公告)日：2017-08-08
申请号：US14166618
申请日：2014-01-28
申请人： CRFS Limited
IPC分类号： H04L27/14 , G01S7/02 , G01R23/165 , G01S5/04 , G01S5/06
CPC分类号： H04L27/14 , G01R23/165 , G01S5/04 , G01S5/06 , G01S7/021
摘要： A frequency discriminator comprising a power splitter for splitting a signal into first and second paths, wherein the first path is configured to provide a first, straight-through signal and the second path includes a frequency-dependent element, such as low-pass filter, so as to provide a second signal. The frequency discriminator further comprises a circuit configured to compare the first and second signals and generate an instantaneous frequency signal in dependence thereon.
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