公开(公告)号：US07720178B2

公开(公告)日：2010-05-18

申请号：US11464089

申请日：2006-08-11

申请人： Kuan-i Li ,  Jui-Ming Wei ,  Chun-nan Chen

发明人： Kuan-i Li ,  Jui-Ming Wei ,  Chun-nan Chen

IPC分类号： H03K9/00 ,  H03D7/16

CPC分类号： G01S19/36 ,  G01S19/33

摘要： A method of direct RF digitization for multiple RF signal bands such GNSS or wireless communication signal bands and a receiver using the method. By using the method, an optimal sampling frequency to be used in direct RF digitization for signals of multiple RF signal bands can be easily obtained. According to the present invention, one or more of the RF signal bands are selected to be shifted to target band(s). By doing so, the optimal sampling frequency can be easily calculated. Then the obtained sampling frequency is used in executing the direct RF digitization.

摘要翻译： 一种用于诸如GNSS或无线通信信号频带的多个RF信号频带的直接RF数字化方法以及使用该方法的接收机。 通过使用该方法，可以容易地获得用于多个RF信号频带的信号的直接RF数字化中的最佳采样频率。 根据本发明，选择一个或多个RF信号频带以转移到目标频带。 通过这样做，可以容易地计算最佳采样频率。 然后获得的采样频率用于执行直接RF数字化。

公开(公告)号：US07706429B2

公开(公告)日：2010-04-27

申请号：US11533142

申请日：2006-09-19

申请人： Chun-nan Chen ,  Jui-Ming Wei

发明人： Chun-nan Chen ,  Jui-Ming Wei

IPC分类号： H04B1/707

CPC分类号： H04B1/7075 ,  G01S19/30 ,  H04B2201/70715 ,  H04L2027/0057

摘要： A BOC signal acquisition and tracking apparatus and method. In the present invention, a BOC subcarrier, a QBOC subcarrier and harmonics thereof are used as subcarriers. Those subcarriers can be mixed with a received signal and integration result of each mixing result is calculated. Then, all the integration results are combined as a combined correlation. Alternatively, those subcarriers can be combined as a synthesized subcarrier. The synthesized subcarrier is mixed with the received signal, and the integration of the mixing result is calculated to obtain a synthesized correlation.

摘要翻译： BOC信号采集跟踪装置及方法。 在本发明中，使用BOC副载波，QBOC副载波及其谐波作为副载波。 这些子载波可以与接收信号混合，并且计算每个混合结果的积分结果。 然后，将所有的积分结果作为一个组合相关组合。 或者，可以将这些子载波组合为合成子载波。 将合成子载波与接收信号混合，并计算混合结果的积分以获得合成的相关性。

公开(公告)号：US20090041089A1

公开(公告)日：2009-02-12

申请号：US11834783

申请日：2007-08-07

申请人： Jhih-siang Jhang ,  Chun-nan Chen

发明人： Jhih-siang Jhang ,  Chun-nan Chen

IPC分类号： H04B1/00

CPC分类号： H04B1/707 ,  G01S19/37 ,  H04B1/709 ,  H04B2201/7071 ,  H04B2201/70715 ,  H04J13/10

摘要： Disclosed is a shared correlator for processing signals with different chip rates from respective channels. The shared correlator comprises a mode controller, a plurality of sub-correlators, a PRN code generator and a plurality of accumulators. The mode controller arranges channel allocations for respective IF signals down converted from the signals. The PRN code generator generates respective PRN codes for the respective IF signals according to the respective chip rates thereof. The sub-correlators perform correlation to the respective IF signals with the respective PRN codes to obtain respective correlating results. The accumulators accumulate the respective correlation results to obtain respective overall correlation gains of the respective IF signals according to the respective chip rates. Each sub-correlator comprises a plurality of correlator cells, correlating one IF signal with one PRN code corresponding thereto according to the chip rate of the IF signal.

摘要翻译： 公开了一种用于处理来自相应信道的具有不同码片速率的信号的共享相关器。 共享相关器包括模式控制器，多个子相关器，PRN码发生器和多个累加器。 模式控制器对从信号中下变频的各个IF信号进行通道分配。 PRN码发生器根据各自的码片速率产生相应的IF信号的PRN码。 子相关器利用相应的PRN码对相应的IF信号进行相关，以获得各自的相关结果。 累加器累积相应的相关结果，以根据各自的码片速率获得各个IF信号的相应总体相关增益。 每个子相关器包括多个相关器单元，根据IF信号的码片速率将一个IF信号与对应于其的一个PRN码相关。

公开(公告)号：US07474260B2

公开(公告)日：2009-01-06

申请号：US11406644

申请日：2006-04-19

申请人： Chun-nan Chen

发明人： Chun-nan Chen

IPC分类号： G01S5/14 ,  H04B1/00

CPC分类号： G01S19/34 ,  G01S19/24 ,  G01S19/29 ,  G01S19/30 ,  G01S19/37 ,  H04B1/7075 ,  H04B2001/70706 ,  H04B2201/70707

摘要： A satellite signal adjustable time-division multiplexing receiver for GNSS and a method for acquiring and tracking satellite signal used in the receiver. The present invention executes correlation in an adjustable time-division multiplexing and uses a clock signal with a clock rate to control speed of correlation. The clock rate can be fixed or variable. In the case that the clock rate is variable, when the speed is required to be fast (e.g. in satellite acquisition mode), the clock rate is set to be high clock rate; when the speed needs not be so fast (e.g. in signal tracking mode), the clock rate can be lower down to reduce power consumption. The adjustable time-division multiplexing is arranged for respective domains such as visible satellite, code phase, Doppler frequency and tracking accuracy according to the clock rate.

摘要翻译： 用于GNSS的卫星信号可调时分多路复用接收机以及用于获取和跟踪在接收机中使用的卫星信号的方法。 本发明在可调时分复用中执行相关性，并且使用具有时钟速率的时钟信号来控制相关速度。 时钟频率可以是固定的或可变的。 在时钟速率可变的情况下，当速度要求快时（例如在卫星采集模式中），时钟频率被设置为高时钟频率; 当速度不需要如此快速（例如在信号跟踪模式中）时，可以将时钟速率降低以降低功耗。 根据时钟频率，对可视卫星，码相位，多普勒频率和跟踪精度等各个域进行可调时分复用。

公开(公告)号：US20070247356A1

公开(公告)日：2007-10-25

申请号：US11406644

申请日：2006-04-19

申请人： Chun-nan Chen

发明人： Chun-nan Chen

IPC分类号： G01S5/14 ,  H04B1/00

CPC分类号： G01S19/34 ,  G01S19/24 ,  G01S19/29 ,  G01S19/30 ,  G01S19/37 ,  H04B1/7075 ,  H04B2001/70706 ,  H04B2201/70707

摘要： A satellite signal adjustable time-division multiplexing receiver for GNSS and a method for acquiring and tracking satellite signal used in the receiver. The present invention executes correlation in an adjustable time-division multiplexing and uses a clock signal with a clock rate to control speed of correlation. The clock rate can be fixed or variable. In the case that the clock rate is variable, when the speed is required to be fast (e.g. in satellite acquisition mode), the clock rate is set to be high clock rate; when the speed needs not be so fast (e.g. in signal tracking mode), the clock rate can be lower down to reduce power consumption. The adjustable time-division multiplexing is arranged for respective domains such as visible satellite, code phase, Doppler frequency and tracking accuracy according to the clock rate.

摘要翻译： 用于GNSS的卫星信号可调时分多路复用接收机以及用于获取和跟踪在接收机中使用的卫星信号的方法。 本发明在可调时分复用中执行相关性，并且使用具有时钟速率的时钟信号来控制相关速度。 时钟频率可以是固定的或可变的。 在时钟速率可变的情况下，当速度要求快时（例如在卫星采集模式中），时钟频率被设定为高时钟频率; 当速度不需要如此快速（例如在信号跟踪模式中）时，可以将时钟速率降低以降低功耗。 根据时钟频率，对可视卫星，码相位，多普勒频率和跟踪精度等各个域进行可调时分复用。

公开(公告)号：US09124345B2

公开(公告)日：2015-09-01

申请号：US12326476

申请日：2008-12-02

申请人： Chun-nan Chen ,  Ping-hsuan Tsu

发明人： Chun-nan Chen ,  Ping-hsuan Tsu

IPC分类号： H04B1/26 ,  H04B1/30 ,  H04B1/00

CPC分类号： H04B1/30 ,  H04B1/0007 ,  H04B1/005 ,  H04B1/006 ,  H04B1/0067

摘要： A GNSS receiver having an IF process engine is disclosed. The IF process engine provides a plurality of carriers with different frequencies and down converts IF signals into baseband signals by using the carriers in a time division multiplex (TDM) schedule. The IF process engine has a local oscillator part for generating the carriers with different frequencies; an IF down-converter for respectively mixing the IF signal with the carriers generated by the local oscillator part to generate IF removed signal segments; a time division multiplex (TDM) controller for scheduling the respective mixing operations of the IF down-converter for the IF signal with the respective carriers; and a buffer for storing the IF removed signal segments generated by the IF down-converter.

摘要翻译： 公开了具有IF处理引擎的GNSS接收机。 IF处理引擎提供具有不同频率的多个载波，并且通过使用时分复用（TDM）调度中的载波，将IF信号下变频为基带信号。 IF处理引擎具有用于生成具有不同频率的载波的本地振荡器部分; 用于分别将IF信号与由本地振荡器部分产生的载波混合以产生IF去除的信号段的IF下变频器; 时分复用（TDM）控制器，用于调度具有各个载波的IF信号的IF下变频器的各自的混合操作; 以及用于存储由IF下变频器产生的IF去除的信号段的缓冲器。

公开(公告)号：US20090081978A1

公开(公告)日：2009-03-26

申请号：US12326476

申请日：2008-12-02

申请人： Chun-nan Chen ,  Ping-hsuan Tsu

发明人： Chun-nan Chen ,  Ping-hsuan Tsu

IPC分类号： H04B1/06

CPC分类号： H04B1/30 ,  H04B1/0007 ,  H04B1/005 ,  H04B1/006 ,  H04B1/0067

摘要： A GNSS receiver having an IF process engine is disclosed. The IF process engine provides a plurality of carriers with different frequencies and down converts IF signals into baseband signals by using the carriers in a time division multiplex (TDM) schedule. The IF process engine has a local oscillator part for generating the carriers with different frequencies; an IF down-converter for respectively mixing the IF signal with the carriers generated by the local oscillator part to generate IF removed signal segments; a time division multiplex (TDM) controller for scheduling the respective mixing operations of the IF down-converter for the IF signal with the respective carriers; and a buffer for storing the IF removed signal segments generated by the IF down-converter.

摘要翻译： 公开了具有IF处理引擎的GNSS接收机。 IF处理引擎提供具有不同频率的多个载波，并且通过使用时分复用（TDM）调度中的载波，将IF信号下变频为基带信号。 IF处理引擎具有用于生成具有不同频率的载波的本地振荡器部分; 用于分别将IF信号与由本地振荡器部分产生的载波混合以产生IF去除的信号段的IF下变频器; 时分复用（TDM）控制器，用于调度具有各个载波的IF信号的IF下变频器的各自的混合操作; 以及用于存储由IF下变频器产生的IF去除的信号段的缓冲器。

公开(公告)号：US07916075B2

公开(公告)日：2011-03-29

申请号：US11775114

申请日：2007-07-09

申请人： Chun-nan Chen

发明人： Chun-nan Chen

IPC分类号： G01S19/24 ,  G01S19/37

CPC分类号： G01S19/30 ,  G01S19/24 ,  G01S19/29 ,  G01S19/34 ,  G01S19/37 ,  H04B1/7075 ,  H04B2001/70706 ,  H04B2201/70707

摘要： A satellite signal adaptive time-division multiplexing receiving device is disclosed. The receiving device operates in time-division multiplexing distributed for various domains such as satellite number, Doppler frequency, code phase and accuracy. When some specific time slots of the time-division multiplexing distribution are unnecessary to be searched, the receiving device uses a disable signal to deactivate specific components such as correlator and memory thereof during those time slots to reduce power consumption.

摘要翻译： 公开了一种卫星信号自适应时分复用接收装置。 接收装置以各种领域分布的时分多路复用操作，如卫星号，多普勒频率，码相位和精度。 当不需要搜索时分复用分配的某些特定时隙时，接收设备在这些时隙期间使用禁用信号去激活诸如相关器和其存储器之类的特定组件以减少功耗。

公开(公告)号：US20080013518A1

公开(公告)日：2008-01-17

申请号：US11775114

申请日：2007-07-09

申请人： Chun-nan Chen

发明人： Chun-nan Chen

IPC分类号： H04J3/00

CPC分类号： G01S19/30 ,  G01S19/24 ,  G01S19/29 ,  G01S19/34 ,  G01S19/37 ,  H04B1/7075 ,  H04B2001/70706 ,  H04B2201/70707

摘要： A satellite signal adaptive time-division multiplexing receiving device is disclosed. The receiving device operates in time-division multiplexing distributed for various domains such as satellite number, Doppler frequency, code phase and accuracy. When some specific time slots of the time-division multiplexing distribution are unnecessary to be searched, the receiving device uses a disable signal to deactivate specific components such as correlator and memory thereof during those time slots to reduce power consumption.

摘要翻译： 公开了一种卫星信号自适应时分复用接收装置。 接收装置以各种领域分布的时分多路复用操作，如卫星号，多普勒频率，码相位和精度。 当不需要搜索时分复用分配的某些特定时隙时，接收设备在这些时隙期间使用禁用信号去激活诸如相关器和其存储器之类的特定组件以减少功耗。

公开(公告)号：US20060044959A1

公开(公告)日：2006-03-02

申请号：US10710948

申请日：2004-08-13

申请人： Pi-Hai Liu ,  Chun-nan Chen

发明人： Pi-Hai Liu ,  Chun-nan Chen

IPC分类号： G11B7/00

CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B2220/216 ,  G11B2220/2541 ,  G11B2220/2562 ,  G11B2220/2579

摘要： An apparatus for detecting physical marks from a wobble signal includes a matching value operation unit, a threshold value generator and a physical mark indicator. A wobble signal is converted into a matched signal by the matching value operation unit according to the waveform difference between a normal clock signal or a specific matching reference signal and itself, wherein the matching reference signal needs to highlight the existed physical mark. The physical mark indicator designates a threshold value that depends on the status of the wobble signal, and compares the matched signal with the threshold value to output a physical mark indication signal. The threshold value is selected from at least two different default values. Furthermore, a decoder is employed to convert the physical mark indication signal into wobble data with physical address information.

摘要翻译： 用于从摆动信号检测物理标记的装置包括匹配值操作单元，阈值发生器和物理标记指示器。 根据正常时钟信号或特定匹配参考信号与其自身之间的波形差，由匹配值运算单元将摆动信号转换成匹配信号，其中匹配参考信号需要突出显示存在的物理标记。 物理标志指​​示器指定取决于摆动信号的状态的阈值，并将匹配的信号与阈值进行比较，以输出物理标记指示信号。 阈值从至少两个不同的默认值中选择。 此外，使用解码器将物理标记指示信号转换成具有物理地址信息的摆动数据。