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    • 4. 发明授权
    • High sensitivity GPS receiver
    • 高灵敏度GPS接收机
    • US08270457B2
    • 2012-09-18
    • US12145918
    • 2008-06-25
    • Qinfang SunWen-Chang YehHo-Chung Chen
    • Qinfang SunWen-Chang YehHo-Chung Chen
    • H04B1/00
    • H04L7/0016G01S19/24G01S19/30G01S19/36G01S19/37
    • A high sensitivity GPS receiver includes an acquisition engine and a tracking engine. The acquisition engine processes GPS satellite data at data rate that is substantially equal to twice the coarse acquisition (CA) code chip rate. This data rate advantageously enables the acquisition engine to process GPS satellite data with relatively less hardware area than traditional GPS acquisition approaches. In one embodiment, the high efficiency acquisition engine may be over-clocked, thereby allowing different phases of a CA code to be correlated quickly. The tracking engine can advantageously processes GPS satellite data at a data rate that does not have an integer relationship to the CA code chip rate.
    • 高灵敏度GPS接收机包括采集引擎和跟踪引擎。 采集引擎以基本上等于粗略采集(CA)码片速率的两倍的数据速率处理GPS卫星数据。 该数据速率有利地使得采集引擎能够以比传统的GPS采集方法更少的硬件面积来处理GPS卫星数据。 在一个实施例中,高效率采集引擎可以被超频,从而允许CA代码的不同阶段快速相关。 跟踪引擎可以以不与CA码片速率的整数关系的数据速率有利地处理GPS卫星数据。
    • 5. 发明授权
    • High sensitivity GPS receiver
    • 高灵敏度GPS接收机
    • US08509362B2
    • 2013-08-13
    • US13549406
    • 2012-07-13
    • Qinfang SunWen-Chang YehHo-Chung Chen
    • Qinfang SunWen-Chang YehHo-Chung Chen
    • H03D1/00
    • H04L7/0016G01S19/24G01S19/30G01S19/36G01S19/37
    • A high sensitivity GPS receiver includes an acquisition engine and a tracking engine. The acquisition engine processes GPS satellite data at data rate that is substantially equal to twice the coarse acquisition (CA) code chip rate. This data rate advantageously enables the acquisition engine to process GPS satellite data with relatively less hardware area than traditional GPS acquisition approaches. In one embodiment, the high efficiency acquisition engine may be over-clocked, thereby allowing different phases of a CA code to be correlated quickly. The tracking engine can advantageously process GPS satellite data at a data rate that does not have an integer relationship to the CA code chip rate.
    • 高灵敏度GPS接收机包括采集引擎和跟踪引擎。 采集引擎以基本上等于粗略采集(CA)码片速率的两倍的数据速率处理GPS卫星数据。 该数据速率有利地使得采集引擎能够以比传统的GPS采集方法更少的硬件面积来处理GPS卫星数据。 在一个实施例中,高效率采集引擎可以被超频,从而允许CA代码的不同阶段快速相关。 跟踪引擎可以以不与CA码片速率的整数关系的数据速率有利地处理GPS卫星数据。
    • 6. 发明授权
    • Satellite navigation receiver having a configurable acquisition engine
    • 具有可配置采集引擎的卫星导航接收机
    • US08018378B2
    • 2011-09-13
    • US12723993
    • 2010-03-15
    • Qinfang SunWen-Chang Yeh
    • Qinfang SunWen-Chang Yeh
    • G01S19/30G01S19/37G01S19/34
    • G01S19/24G01S19/30G01S19/36G01S19/37
    • A satellite navigation receiver having a flexible acquisition and tracking engine architecture. The flexible acquisition engine has a reconfigurable delay line that can be used either as a single entity or divided into different sections. Consequently, it can be configured to search different satellite vehicles, a single Doppler frequency, and full CA code in parallel. When configuring the delay line into different sections, each section is used to search a partial CA code. In this configuration, multiple Doppler mode, multiple satellite vehicles, multiple Doppler frequencies, and partial CA code can be searched in parallel. Furthermore, the different sections of the CA code can be time-multiplexed into a correlator, which can then be over clocked to achieve full CA code correlation. The flexible tracking engine includes a number of parallel tracking channels, whereby each individual channel has a number of taps or fingers, which can be used to lock onto different delays. During tracking, one of the taps can be used to lock on to the center of the peak. This leaves the other taps free to be used to perform other functions, such as determining the shape of the peak, detecting earlier arrivals for line of sight component, and obtaining an estimate of the noise floor. The flexible tracking engine is configurable to help acquisition functions, such as fine acquisition, false trigger detection, and/or fast reacquisition.
    • 具有灵活的采集跟踪引擎结构的卫星导航接收机。 灵活的采集引擎具有可重新配置的延迟线,可以将其用作单个实体或分为不同的部分。 因此,它可以被配置为并行搜索不同的卫星车辆,单个多普勒频率和完整的CA码。 当将延迟线配置到不同的部分时,每个部分用于搜索部分CA代码。 在这种配置中,可以并行地搜索多重多普勒模式,多个卫星载波,多重多普勒频率和部分CA码。 此外,CA代码的不同部分可以被时分复用到相关器中,然后可以超时钟以实现完全CA代码相关。 柔性跟踪引擎包括多个并行跟踪通道,由此每个单独的通道具有多个抽头或手指,可用于锁定到不同的延迟。 在跟踪期间,可以使用其中一个水龙头锁定到峰顶的中心。 这使得另一个水龙头可以自由地用于执行其他功能,例如确定峰值的形状,检测视线分量的较早到达,以及获得噪声基底的估计。 灵活的跟踪引擎可配置为帮助采集功能,如精细采集,错误触发检测和/或快速重新采集。
    • 8. 发明授权
    • Satellite navigation receiver having configurable acquisition and tracking engines
    • 具有可配置采集和跟踪引擎的卫星导航接收机
    • US07705778B2
    • 2010-04-27
    • US12261896
    • 2008-10-30
    • Qinfang SunWen-Chang Yeh
    • Qinfang SunWen-Chang Yeh
    • G01S1/00
    • G01S19/24G01S19/30G01S19/36G01S19/37
    • A satellite navigation receiver having a flexible acquisition and tracking engine architecture. The flexible acquisition engine has a reconfigurable delay line that can be used either as a single entity or divided into different sections. Consequently, it can be configured to search different satellite vehicles, a single Doppler frequency, and full CA code in parallel. When configuring the delay line into different sections, each section is used to search a partial CA code. In this configuration, multiple Doppler mode, multiple satellite vehicles, multiple Doppler frequencies, and partial CA code can be searched in parallel. Furthermore, the different sections of the CA code can be time-multiplexed into a correlator, which can then be over clocked to achieve full CA code correlation. The flexible tracking engine includes a number of parallel tracking channels, whereby each individual channel has a number of taps or fingers, which can be used to lock onto different delays. During tracking, one of the taps can be used to lock on to the center of the peak. This leaves the other taps free to be used to perform other functions, such as determining the shape of the peak, detecting earlier arrivals for line of sight component, and obtaining an estimate of the noise floor. The flexible tracking engine is configurable to help acquisition functions, such as fine acquisition, false trigger detection, and/or fast reacquisition.
    • 具有灵活的采集跟踪引擎结构的卫星导航接收机。 灵活的采集引擎具有可重新配置的延迟线,可以将其用作单个实体或分为不同的部分。 因此,它可以被配置为并行搜索不同的卫星车辆,单个多普勒频率和完整的CA码。 当将延迟线配置到不同的部分时,每个部分用于搜索部分CA代码。 在这种配置中,可以并行地搜索多重多普勒模式,多个卫星载波,多重多普勒频率和部分CA码。 此外,CA代码的不同部分可以被时分复用到相关器中,然后可以超时钟以实现完全CA代码相关。 柔性跟踪引擎包括多个并行跟踪通道,由此每个单独的通道具有多个抽头或手指,可用于锁定到不同的延迟。 在跟踪期间,可以使用其中一个水龙头锁定到峰顶的中心。 这使得另一个水龙头可以自由地用于执行其他功能,例如确定峰值的形状,检测视线分量的较早到达,以及获得噪声基底的估计。 灵活的跟踪引擎可配置为帮助采集功能,如精细采集,错误触发检测和/或快速重新采集。
    • 9. 发明申请
    • High Sensitivity GPS Receiver
    • 高灵敏度GPS接收机
    • US20090079627A1
    • 2009-03-26
    • US12145918
    • 2008-06-25
    • Qinfang SunWen-Chang YehHo-Chung Chen
    • Qinfang SunWen-Chang YehHo-Chung Chen
    • G01S1/00
    • H04L7/0016G01S19/24G01S19/30G01S19/36G01S19/37
    • A high sensitivity GPS receiver includes an acquisition engine and a tracking engine. The acquisition engine processes GPS satellite data at data rate that is substantially equal to twice the coarse acquisition (CA) code chip rate. This data rate advantageously enables the acquisition engine to process GPS satellite data with relatively less hardware area than traditional GPS acquisition approaches. In one embodiment, the high efficiency acquisition engine may be over-clocked, thereby allowing different phases of a CA code to be correlated quickly. The tracking engine can advantageously processes GPS satellite data at a data rate that does not have an integer relationship to the CA code chip rate.
    • 高灵敏度GPS接收机包括采集引擎和跟踪引擎。 采集引擎以基本上等于粗略采集(CA)码片速率的两倍的数据速率处理GPS卫星数据。 该数据速率有利地使得采集引擎能够以比传统的GPS采集方法更少的硬件面积来处理GPS卫星数据。 在一个实施例中,高效率采集引擎可以被超频,从而允许CA代码的不同阶段快速相关。 跟踪引擎可以以不与CA码片速率的整数关系的数据速率有利地处理GPS卫星数据。