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    • 42. 发明授权
    • Tapered coherent integration time for a receiver of a positioning system
    • 定位系统接收机的锥形相干积分时间
    • US09541651B2
    • 2017-01-10
    • US14267629
    • 2014-05-01
    • iPosi, Inc.
    • Christopher Neil Kurby
    • G01S19/13G01S19/30G01S19/24G01S19/21
    • G01S19/30G01S19/21G01S19/246
    • Approaches to signal processing using tapered coherent integration time period durations. In this regard, signal processing of received signals (e.g., received satellite navigation signals) may be received at a receiver. The received signals may be processed in a coherent integration process whereby the duration of subsequent coherent integration time periods are reduced in response to errors resulting from frequency instability that grows in time. As such, relatively long durations for coherent integration times may result in improved signal to noise ratios (SNRs) for integrated signals in initial coherent integration time periods. However, as errors that are introduced into the signal processing due grow over time, the durations of subsequent coherent integration time periods may be reduced, thus reducing the effect of the error in a SNR of resulting integrated signals. In turn, receiver sensitivity may be improved.
    • 使用渐变相干积分时间段进行信号处理的方法。 在这方面,可以在接收机处接收接收信号(例如,接收到的卫星导航信号)的信号处理。 可以在相干积分过程中处理所接收的信号,由此响应于随时间增长的频率不稳定性导致的误差而减小后续相干积分时间段的持续时间。 因此,相干积分时间的相对较长的持续时间可能导致在初始相干积分时间段内针对集成信号的改善的信噪比(SNR)。 然而,随着随着时间的推移而被引入到信号处理中的误差可能会随之减小,从而减少了所得到的积分信号的SNR中的误差的影响。 反过来,可以提高接收机灵敏度。
    • 44. 发明申请
    • HYBRID TIMING FOR A GNSS RECEIVER
    • GNSS接收机的混合时序
    • US20160269170A1
    • 2016-09-15
    • US14985744
    • 2015-12-31
    • iPosi, Inc.
    • Christopher Neil Kurby
    • H04L7/00H04L12/26
    • H04L7/0025H03L7/06H03L7/0807H04L7/0012H04L43/16
    • Synchronization of a time base at a local clock to a reference time. Initially, correction data (e.g., synchronization data) may be derived from packet data received over an asynchronous packet-switched network (e.g., the internet). Correction data derived from the packet data may be used to correct at least a portion of the time base (e.g., a frequency component). In turn, once the time base is corrected (e.g., to better than a predetermined quality threshold), the source of synchronization data may change to an alternate (e.g., more accurate source) such as positioning signals from a positioning system. In this regard, the corrected time base may be used to assist in acquiring such positioning signals to allow for higher accuracy correction. Furthermore, use of the positioning system may allow for correction of a phase of the time base (e.g., to align the phase to the positioning system. In turn, an accurate time base may be utilized (e.g., for location determination using the positioning system) and/or other contexts such as a downstream communication operation. For instance, a device employing the synchronization techniques described herein may be an LTE base station used to facilitate downstream communication with another device by use of the synchronized time base.
    • 将本地时钟的时基同步到参考时间。 最初,可以从通过异步分组交换网络(例如,因特网)接收的分组数据导出校正数据(例如,同步数据)。 从分组数据导出的校正数据可以用于校正时基的至少一部分(例如,频率分量)。 反过来,一旦时基被校正(例如,比预定的质量阈值更好),同步数据源可以改变为例如来自定位系统的定位信号的替代(例如更准确的源)。 在这方面,校正的时基可以用于帮助获取这样的定位信号以允许更高的精度校正。 此外,使用定位系统可以允许对时基的相位进行校正(例如,将相位与定位系统对准),反过来,可以利用精确的时基(例如,使用定位系统进行位置确定 )和/或其他上下文(例如下游通信操作),例如,采用本文描述的同步技术的设备可以是用于通过使用同步时基来促进与另一设备的下游通信的LTE基站。
    • 45. 发明申请
    • JOINT PROCESSING OF GNSS PSEUDORANGE SIGNALS
    • 全球导航卫星系统信号的联合处理
    • US20150338519A1
    • 2015-11-26
    • US14285770
    • 2014-05-23
    • iPosi, Inc.
    • Eric Derbez
    • G01S19/13
    • G01S19/13G01S19/03G01S19/14G01S19/20G01S19/23G01S19/235G01S19/246G01S19/51
    • An approach to joint processing of GNSS signals to determine a receiver location and common mode bias associated with grouped records corresponding to GNSS signals. In this regard, a receiver may acquire signals from a GNSS space vehicle over a relatively long period of time. In turn, records corresponding to received signals may be stored and grouped. The grouping of records may be based on assumptions of a common-mode bias for certain records (e.g., records acquired within a given duration of an observation time period). Upon acquisition of a suitable number of records, an over-determined system may be established that is used in iterative processing to solve for location and/or bias values associated with the respective common-mode bias for each group of records. As such, improved receiver performance may be realized.
    • 联合处理GNSS信号以确定与对应于GNSS信号的分组记录相关联的接收器位置和共模偏置的方法。 在这方面,接收机可以在相对长的时间段内从GNSS空间车辆获取信号。 反过来,可以存储和分组对应于接收到的信号的记录。 记录分组可以基于对于某些记录(例如,在观察时间段的给定持续时间内获得的记录)的共模偏差的假设。 在获取适当数量的记录之后,可以建立用于迭代处理的过度确定的系统,以解决与各组记录相应的相应共模偏置相关联的位置和/或偏置值。 因此,可以实现改进的接收机性能。
    • 46. 发明申请
    • TAPERED COHERENT INTEGRATION TIME FOR A RECEIVER OF A POSITIONING SYSTEM
    • 定位系统接收器的一致的集成时间
    • US20150316651A1
    • 2015-11-05
    • US14267629
    • 2014-05-01
    • iPosi, Inc.
    • Christopher Neil Kurby
    • G01S19/13
    • G01S19/30G01S19/21G01S19/246
    • Approaches to signal processing using tapered coherent integration time period durations. In this regard, signal processing of received signals (e.g., received satellite navigation signals) may be received at a receiver. The received signals may be processed in a coherent integration process whereby the duration of subsequent coherent integration time periods are reduced in response to errors resulting from frequency instability that grows in time. As such, relatively long durations for coherent integration times may result in improved signal to noise ratios (SNRs) for integrated signals in initial coherent integration time periods. However, as errors that are introduced into the signal processing due grow over time, the durations of subsequent coherent integration time periods may be reduced, thus reducing the effect of the error in a SNR of resulting integrated signals. In turn, receiver sensitivity may be improved.
    • 使用渐变相干积分时间段进行信号处理的方法。 在这方面,可以在接收机处接收接收信号(例如,接收到的卫星导航信号)的信号处理。 可以在相干积分过程中处理所接收的信号,由此响应于随时间增长的频率不稳定性导致的误差而减小后续相干积分时间段的持续时间。 因此,相干积分时间的相对较长的持续时间可能导致在初始相干积分时间段内针对集成信号的改善的信噪比(SNR)。 然而,随着随着时间的推移而被引入到信号处理中的误差可能会随之减小,从而减少了所得到的积分信号的SNR中的误差的影响。 反过来,可以提高接收机灵敏度。
    • 49. 发明公开
    • HYBRID TIMING FOR A GNSS RECEIVER
    • EP3241040A4
    • 2018-05-23
    • EP15876337
    • 2015-12-31
    • IPOSI INC
    • KURBY CHRISTOPHER NEIL
    • H03L7/06H03L7/08
    • H04L7/0025H03L7/06H03L7/0807H04L7/0012H04L43/16
    • Synchronization of a time base at a local clock to a reference time. Initially, correction data (e.g., synchronization data) may be derived from packet data received over an asynchronous packet-switched network (e.g., the internet). Correction data derived from the packet data may be used to correct at least a portion of the time base (e.g., a frequency component). In turn, once the time base is corrected (e.g., to better than a predetermined quality threshold), the source of synchronization data may change to an alternate (e.g., more accurate source) such as positioning signals from a positioning system. In this regard, the corrected time base may be used to assist in acquiring such positioning signals to allow for higher accuracy correction. Furthermore, use of the positioning system may allow for correction of a phase of the time base (e.g., to align the phase to the positioning system. In turn, an accurate time base may be utilized (e.g., for location determination using the positioning system) and/or other contexts such as a downstream communication operation. For instance, a device employing the synchronization techniques described herein may be an LTE base station used to facilitate downstream communication with another device by use of the synchronized time base.
    • 50. 发明公开
    • HYBRID TIMING FOR A GNSS RECEIVER
    • GNSS接收机的混合时序
    • EP3241040A2
    • 2017-11-08
    • EP15876337.5
    • 2015-12-31
    • Iposi, Inc.
    • KURBY, Christopher Neil
    • G01S19/25H04B1/7073
    • H04L7/0025H03L7/06H03L7/0807H04L7/0012H04L43/16
    • Synchronization of a time base at a local clock to a reference time. Initially, correction data (e.g., synchronization data) may be derived from packet data received over an asynchronous packet-switched network (e.g., the internet). Correction data derived from the packet data may be used to correct at least a portion of the time base (e.g., a frequency component). In turn, once the time base is corrected (e.g., to better than a predetermined quality threshold), the source of synchronization data may change to an alternate (e.g., more accurate source) such as positioning signals from a positioning system. In this regard, the corrected time base may be used to assist in acquiring such positioning signals to allow for higher accuracy correction. Furthermore, use of the positioning system may allow for correction of a phase of the time base (e.g., to align the phase to the positioning system. In turn, an accurate time base may be utilized (e.g., for location determination using the positioning system) and/or other contexts such as a downstream communication operation. For instance, a device employing the synchronization techniques described herein may be an LTE base station used to facilitate downstream communication with another device by use of the synchronized time base.