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公开(公告)号：US09612339B2
公开(公告)日：2017-04-04
申请号：US13412281
申请日：2012-03-05
摘要： A GNSS receiver configured to detect a presence of at least one GNSS satellite signal in a received signal is provided. The GNSS receiver includes a buffer loaded with sample sets corresponding to the received signal and a Doppler derotation block configured to perform a Doppler derotation corresponding to at least one Doppler frequency on a sample set received from the buffer. The GNSS receiver further includes an accumulator block configured to perform a coherent accumulation of a plurality of sample sets upon or subsequent to the Doppler derotation corresponding to a Doppler frequency, and, a first memory configured to store the results of the coherent accumulation. A register array is configured to be loaded with the results stored in the first memory and a correlator engine is configured to generate correlation results by correlating the results in the register array with a plurality of code phases of GNSS satellites.
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公开(公告)号：US20130229305A1
公开(公告)日：2013-09-05
申请号：US13412281
申请日：2012-03-05
IPC分类号： G01S19/24
摘要： A GNSS receiver configured to detect a presence of at least one GNSS satellite signal in a received signal is provided. The GNSS receiver includes a buffer loaded with sample sets corresponding to the received signal and a Doppler derotation block configured to perform a Doppler derotation corresponding to at least one Doppler frequency on a sample set received from the buffer. The GNSS receiver further includes an accumulator block configured to perform a coherent accumulation of a plurality of sample sets upon or subsequent to the Doppler derotation corresponding to a Doppler frequency, and, a first memory configured to store the results of the coherent accumulation. A register array is configured to be loaded with the results stored in the first memory and a correlator engine is configured to generate correlation results by correlating the results in the register array with a plurality of code phases of GNSS satellites.
摘要翻译： 提供了一种被配置为检测接收到的信号中至少一个GNSS卫星信号的存在的GNSS接收器。 GNSS接收机包括装载有与接收信号相对应的采样集的缓冲器和被配置为执行对应于从缓冲器接收的采样集上的至少一个多普勒频率的多普勒解旋的多普勒解旋转块。 GNSS接收器还包括累加器块，其被配置为在对应于多普勒频率的多普勒解旋之后或之后执行多个采样集的相干累积，以及被配置为存储相干累加的结果的第一存储器。 寄存器阵列被配置为加载存储在第一存储器中的结果，并且相关器引擎被配置为通过将寄存器阵列中的结果与GNSS卫星的多个码相相关来产生相关结果。
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3.发明申请ENHANCING SEARCH CAPACITY OF GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) RECEIVERS 有权增强全球导航卫星系统（GNSS）接收机的搜索能力公开(公告)号：US20120169538A1
公开(公告)日：2012-07-05
申请号：US12980360
申请日：2010-12-29
CPC分类号： G01S19/28 , G01R31/2851 , G01S19/24 , G01S19/30 , G01S19/37
摘要： Enhancing search capacity of Global Navigation Satellite System (GNSS) receivers. A method for searching satellite signals in a receiver includes performing a plurality of searches sequentially. The method also includes storing a result from each search of the plurality of searches in a consecutive section of a memory. Further, the method includes detecting free sections in the memory. The method also includes concatenating the free sections in the memory to yield a concatenated free section. Moreover, the method includes allocating the concatenated free section for performing an additional search.
摘要翻译： 提高全球导航卫星系统（GNSS）接收机的搜索能力。 用于在接收机中搜索卫星信号的方法包括顺序执行多个搜索。 该方法还包括将来自多个搜索的每次搜索的结果存储在存储器的连续部分中。 此外，该方法包括检测存储器中的空闲部分。 该方法还包括连接存储器中的空闲部分以产生级联的自由部分。 此外，该方法包括分配用于执行附加搜索的级联空闲部分。
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4.发明授权Enhancing search capacity of global navigation satellite system (GNSS) receivers 有权提高全球导航卫星系统（GNSS）接收机的搜索能力公开(公告)号：US08436771B2
公开(公告)日：2013-05-07
申请号：US12980360
申请日：2010-12-29
IPC分类号： G01S19/24
CPC分类号： G01S19/28 , G01R31/2851 , G01S19/24 , G01S19/30 , G01S19/37
摘要： Enhancing search capacity of Global Navigation Satellite System (GNSS) receivers. A method for searching satellite signals in a receiver includes performing a plurality of searches sequentially. The method also includes storing a result from each search of the plurality of searches in a consecutive section of a memory. Further, the method includes detecting free sections in the memory. The method also includes concatenating the free sections in the memory to yield a concatenated free section. Moreover, the method includes allocating the concatenated free section for performing an additional search.
摘要翻译： 提高全球导航卫星系统（GNSS）接收机的搜索能力。 用于在接收机中搜索卫星信号的方法包括顺序执行多个搜索。 该方法还包括将来自多个搜索的每次搜索的结果存储在存储器的连续部分中。 此外，该方法包括检测存储器中的空闲部分。 该方法还包括连接存储器中的空闲部分以产生级联的自由部分。 此外，该方法包括分配用于执行附加搜索的级联空闲部分。
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公开(公告)号：US20130016010A1
公开(公告)日：2013-01-17
申请号：US13182233
申请日：2011-07-13
IPC分类号： G01S19/30
CPC分类号： G01S19/30
摘要： A GNSS receiver includes at least one buffer and at least one correlator block. The at least one buffer stores a plurality of samples corresponding to a received signal. The at least one correlator block includes a Doppler derotation block configured to perform Doppler derotation corresponding to at least one Doppler frequency on the plurality of samples, a register array configured to be loaded with the plurality of samples on Doppler derotation corresponding to a Doppler frequency of the at least one Doppler frequency, and a correlator engine configured to generate correlation results by correlating the plurality of samples in the register array with a plurality of code phases for at least one GNSS satellite. A presence of at least one GNSS satellite signal may be detected based on coherent accumulation and a non-coherent accumulation of the correlation results.
摘要翻译： GNSS接收器包括至少一个缓冲器和至少一个相关器块。 所述至少一个缓冲器存储对应于接收信号的多个采样。 所述至少一个相关器块包括被配置为执行对应于所述多个样本上的至少一个多普勒频率的多普勒解旋的多普勒解旋转块，配置为在对应于多普勒频率的多普勒频率的多普勒解调上加载多个样本的寄存器阵列 所述至少一个多普勒频率以及被配置为通过将所述寄存器阵列中的所述多个采样与至少一个GNSS卫星的多个码相相关来生成相关结果的相关器引擎。 可以基于相干累积和相关结果的非相干累积来检测至少一个GNSS卫星信号的存在。
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6.发明授权公开(公告)号：US09000980B2
公开(公告)日：2015-04-07
申请号：US13182233
申请日：2011-07-13
CPC分类号： G01S19/30
摘要： A GNSS receiver includes at least one buffer and at least one correlator block. The at least one buffer stores a plurality of samples corresponding to a received signal. The at least one correlator block includes a Doppler derotation block configured to perform Doppler derotation corresponding to at least one Doppler frequency on the plurality of samples, a register array configured to be loaded with the plurality of samples on Doppler derotation corresponding to a Doppler frequency of the at least one Doppler frequency, and a correlator engine configured to generate correlation results by correlating the plurality of samples in the register array with a plurality of code phases for at least one GNSS satellite. A presence of at least one GNSS satellite signal may be detected based on coherent accumulation and a non-coherent accumulation of the correlation results.
摘要翻译： GNSS接收器包括至少一个缓冲器和至少一个相关器块。 所述至少一个缓冲器存储对应于接收信号的多个采样。 所述至少一个相关器块包括被配置为执行对应于所述多个样本上的至少一个多普勒频率的多普勒解旋的多普勒解旋转块，配置为在对应于多普勒频率的多普勒频率的多普勒解调上加载多个样本的寄存器阵列 所述至少一个多普勒频率以及被配置为通过将所述寄存器阵列中的所述多个采样与至少一个GNSS卫星的多个码相相关来生成相关结果的相关器引擎。 可以基于相干累积和相关结果的非相干累积来检测至少一个GNSS卫星信号的存在。
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7.发明申请Receiver Block Providing Signal Quality Information in a Communication System with Signal Constellation not Having multiple Symbols in Same Angle 审中-公开接收器块提供具有信号星座的通信系统中没有相同角度的多个符号的信号质量信息公开(公告)号：US20070030915A1
公开(公告)日：2007-02-08
申请号：US11161460
申请日：2005-08-04
CPC分类号： H04L27/22 , H04L1/206 , H04L25/067
摘要： An aspect of the present invention provides signal quality information representing the angular deviations (i.e., based on the phase angle difference between the received symbol and the corresponding decoded symbol (i.e., selected symbol point in a signal constellation)). As a result, a relatively more accurate signal quality information is provided to external component at least in systems in which the signal constellation do not have multiple symbols in the same angle. The computational complexity may also be reduced as a result.
摘要翻译： 本发明的一个方面提供了表示角度偏差的信号质量信息（即，基于接收符号和对应的解码符号之间的相位角差（即，信号星座中的所选符号点））。 结果，至少在信号星座不具有相同角度的多个符号的系统中，向外部组件提供相对更准确的信号质量信息。 结果也可能减少计算复杂度。
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8.发明授权Mitigation circuitry generating cross correlation doppler/code LAG variable comparison value 有权产生互相关多普勒/代码LAG变量比较值的缓解电路公开(公告)号：US09036683B2
公开(公告)日：2015-05-19
申请号：US12719965
申请日：2010-03-09
IPC分类号： H04B1/00 , H04B1/7075 , G01S19/21
CPC分类号： G01S19/21 , H04B1/70755 , H04B2201/70715
摘要： A receiver (100) is provided for signals of different signal strengths and modulated with respective pseudorandom noise (PN) codes. The receiver (100) includes a correlator circuit (120) operable to correlate the signals with a selectable locally-issued PN code having a Doppler and a code lag to produce a peak, the correlator circuit (120) being subject to cross correlation with a distinct PN code carried by least one of the signals that can produce cross correlation; and a cross correlation circuit (370, 400) operable to generate a variable comparison value related to the cross correlation as a function of values representing a Doppler difference and a code lag difference between the locally-issued PN code and the distinct PN code, and to use the variable comparison value to reject the peak as invalid from cross correlation or to pass the peak as a valid received peak.
摘要翻译： 为不同信号强度的信号提供接收机（100），并用各自的伪随机噪声（PN）码进行调制。 接收器（100）包括相关器电路（120），其可操作以将信号与具有多普勒和码滞后的可选择本地发出的PN码相关以产生峰值，所述相关器电路（120）与 不同PN码携带的信号中至少有一个会产生互相关; 以及互相关电路（370,400），其可操作以根据表示本地发出的PN码和不同PN码之间的多普勒差和码滞差的值产生与互相关的可变比较值，以及 使用可变比较值将峰值从互相关中排除为无效，或将峰值作为有效接收峰值传递。
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9.发明授权Radio receiver with mitigation modules and mixers with phase compensation 有权带缓解模块的无线电接收器和具有相位补偿的混频器公开(公告)号：US08693598B2
公开(公告)日：2014-04-08
申请号：US13204618
申请日：2011-08-05
IPC分类号： H03D1/04
CPC分类号： H04B1/7097 , G01S19/21 , G01S19/33 , H04B1/7073 , H04B2201/70715
摘要： Example embodiments of the systems and methods of dynamic spur mitigation for wireless receivers disclosed herein comprise one or more of a detection module for detecting the presence of a spur and a determination of its frequency, a complex notch filter chain, and a frequency locked loop which ensures that the input spur is notch filtered even if it drifts after detection. When a spur is detected, the frequency of the tone is determined. The spur is then filtered, for example using a phase rotator and a DC separator. The phase rotation is removed in a subsequent stage. The non-DC component from the DC separator is used to track the spur to compensate for any shifting or drifting in the spur.
摘要翻译： 本文公开的用于无线接收机的动态杂散减轻的系统和方法的示例性实施例包括用于检测杂散的存在和其频率的确定的检测模块，复杂陷波滤波器链和频率锁定环中的一个或多个 确保即使在检测到漂移后，输入杂散也被陷波滤波。 当检测到杂音时，确定音调的频率。 然后过滤杂质，例如使用相旋转器和DC分离器。 在后续阶段中除去相位旋转。 来自DC分离器的非直流分量用于跟踪支线以补偿支线中的任何变化或漂移。
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公开(公告)号：US20130099967A1
公开(公告)日：2013-04-25
申请号：US13280524
申请日：2011-10-25
IPC分类号： G01S19/23
CPC分类号： G01S19/23
摘要： Navigation system receiver, and test circuits and methods for determining drift profile of a receiver clock in the navigation system receiver are disclosed. In an embodiment, the navigation system receiver includes a clock source configured to generate a receiver clock for the navigation system receiver and a test circuit. The test circuit is configured to facilitate determination of a drift profile associated with the receiver clock based on detection and tracking of a test signal received by the test circuit, where the test signal comprises at least one continuous wave (CW) signal.
摘要翻译： 导航系统接收机，以及用于确定导航系统接收机中的接收机时钟的漂移曲线的测试电路和方法。 在一个实施例中，导航系统接收器包括配置成为导航系统接收器和测试电路产生接收机时钟的时钟源。 测试电路被配置为便于基于由测试电路接收的测试信号的检测和跟踪来确定与接收机时钟相关联的漂移曲线，其中测试信号包括至少一个连续波（CW）信号。
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