公开(公告)号：US07940212B2

公开(公告)日：2011-05-10

申请号：US12155379

申请日：2008-06-03

Applicant: Michael Ammann

Inventor： Michael Ammann

IPC: G01S19/09

CPC classification number: H04B1/70752 ,  G01S19/29 ,  H04B1/7095 ,  H04B2201/70715

Abstract: An acquisition unit of a GNSS receiver base band circuit includes an integrator with a number of preprocessors where an incoming digital signal is mixed with different frequency signals to compensate at least in part for clock drift and Doppler shifts. The resulting digital signals are, after an accumulation step reducing sample frequency, integrated over an integration period extending over several basic intervals of the length of a basic sequence characteristic for a GNSS satellite, so that samples separated by a multiple of the basic interval are superposed. The resulting data sequence of 1,023 digital values is stored in one of two memories and then, in mixers, sequentially shifted by post-integration frequencies which are multiples of the inverse of the length of the basic interval, The pre-integration frequencies employed in the preprocessors deviate, with one possible exception, from the post-integration frequencies and are usually smaller.

Abstract translation: GNSS接收器基带电路的获取单元包括具有多个预处理器的积分器，其中输入数字信号与不同的频率信号混合，以至少部分地补偿时钟漂移和多普勒频移。 所产生的数字信号在累积步骤降低采样频率之后，在对于GNSS卫星的基本序列特征的长度的几个基本间隔延伸的积分周期内积分，使得由基本间隔的倍数分隔的样本被叠加 。 所得到的1,023个数字值的数据序列被存储在两个存储器之一中，然后在混频器中顺序地移位，后置积分频率是基本间隔长度的倒数的倍数。 预处理器与后期整合频率偏离一个可能的例外，通常较小。

公开(公告)号：US09348030B2

公开(公告)日：2016-05-24

申请号：US12970825

申请日：2010-12-16

Applicant: Andreas Thiel ,  Michael Ammann

Inventor： Andreas Thiel ,  Michael Ammann

IPC: G01S19/35 ,  G01S19/09 ,  G01S19/34 ,  G01S19/24

CPC classification number: G01S19/34 ,  G01S19/24

Abstract: A satellite positioning receiver. The receiver comprises: an RF front end, for receiving satellite positioning signals; an analog to digital converter, for sampling the received signals to generate signal samples; a memory; and a processor, for processing the signal samples to derive code-phases and pseudo-ranges and to calculate a position fix. The processor has a first mode in which it is operable to process the samples as they are generated, to calculate the position fix. It also has a second mode in which it is operable to store the samples or the code-phases or pseudo-ranges in the memory for later processing.

Abstract translation: 卫星定位接收机。 接收机包括：RF前端，用于接收卫星定位信号; 模数转换器，用于对接收到的信号进行采样以产生信号采样; 记忆 以及处理器，用于处理信号样本以导出代码相位和伪距离并计算定位。 处理器具有第一模式，其中可操作以在样本生成时处理样本，以计算位置锁定。 它还具有第二模式，其中可操作地将存储样本或代码阶段或伪范围存储在存储器中用于稍后处理。

公开(公告)号：US20100166046A1

公开(公告)日：2010-07-01

申请号：US12379230

申请日：2009-02-17

Applicant: Michael Ammann ,  Heinz Mathis

Inventor： Michael Ammann ,  Heinz Mathis

IPC: H04B1/707

CPC classification number: G01S19/30 ,  G01S19/37 ,  H04B1/70755 ,  H04B2201/70715

Abstract: In a GNSS receiver data sequences derived from a digital signal each with an internally generated correlation sequence derived from a basic sequence and mixed with frequency signals corresponding to various Doppler frequencies and in various phase positions with respect to the data sequence are correlated and the correlation values evaluated. In difficult conditions, e.g., RF levels of the signal of −145 dBm and less, correlation values produced with the same correlation sequence and phase position but with a plurality of data sequences are evaluated together in that, in an evaluator (49), every-correlation value is, in a comparator (52), compared with at least a first value threshold and a second value threshold, with the latter having a value between 1.3 and 1.7 times the value of the first and values −1, 0 or +1 assigned accordingly to a correlation term which is then added to an integer correlation counter which varies over a counter interval, e.g., [0, 15], in an adding unit (53). The correlation counters corresponding to the various Doppler frequencies and phase positions are stored in a memory unit (54). In an arbitration unit (51) a correlation indicator is derived from each correlation counter and the latest corresponding correlation value and the six largest correlation indicators selected and stored together with their Doppler frequencies and phase positions.

Abstract translation: 在GNSS接收器中，从数字信号导出的数据序列与每个具有从基本序列导出的内部产生的相关序列和与各种多普勒频率对应的频率信号以及相对于数据序列的各种相位位置混合的数字信号相关联，并且相关值 评估。 在困难的条件下，例如，信号的-145dBm以下的RF电平，以相同的相关序列和相位位置产生但是具有多个数据序列的相关值被一起评估为：在评估器（49）中，每个 在比较器（52）中，相关值与至少第一值阈值和第二值阈值进行比较，后者的值在第一值的值的1.3和1.7倍之间，值-1,0或+ 1相应地被分配给相关项，该相关项然后被添加到在加法单元（53）中在计数器间隔（例如[0,15]）上变化的整数相关计数器。 对应于各种多普勒频率和相位位置的相关计数器被存储在存储器单元（54）中。 在仲裁单元（51）中，从每个相关计数器导出相关指示符，并且与其多普勒频率和相位位置一起选择和存储的最新对应相关值和六个最大相关指标。

公开(公告)号：US20090289846A1

公开(公告)日：2009-11-26

申请号：US12155379

申请日：2008-06-03

Applicant: Michael Ammann

Inventor： Michael Ammann

IPC: G01S1/00

CPC classification number: H04B1/70752 ,  G01S19/29 ,  H04B1/7095 ,  H04B2201/70715

Abstract: An acquisition unit of a GNSS receiver base band circuit comprises an integrator (27) with a number of preprocessors (29a-h) where an incoming digital signal is mixed with different frequency signals to compensate at least in part for clock drift and Doppler shifts. The resulting digital signals are in each case, after an accumulation step reducing sample frequency, integrated over an integration period extendinging over several, e.g., twenty, basic intervals of the length of a basic sequence characteristic for a GNSS satellite, usually 1 ms, in such a way that samples separated by a multiple of the basic interval are superposed. The resulting data sequence of 1,023 digital values is stored in one of two memories (34, 35) and then, in mixers (38, 39), sequentially shifted by post-integration frequencies which are multiples of the inverse of the length of the basic interval, usually 1 kHz, whereas the pre-integration frequencies employed in the preprocessors (29a-h) deviate, with one possible exception, from the said post-integration frequencies and are usually smaller, preferably multiples of the integration period, e.g., 50 Hz.

Abstract translation: GNSS接收机基带电路的获取单元包括具有多个预处理器（29a-h）的积分器（27），其中输入数字信号与不同的频率信号混合，以至少部分地补偿时钟漂移和多普勒频移。 在每个情况下，所得到的数字信号在累积步骤减少采样频率之后，在积分周期内积分，该积分周期延伸超过GNSS卫星的基本序列特征的几个，例如二十个基本间隔，通常为1ms，在 这样一种将基本间隔的倍数分开的样本叠加的方式。 所得到的1,023个数字值的数据序列被存储在两个存储器（34,35）中的一个中，然后在混合器（38,39）中的一个中被依次移位的后积分频率是基本长度的倒数的倍数 间隔，通常为1kHz，而在预处理器（29a-h）中使用的预积分频率与所述后积分频率偏离一个可能的例外，并且通常较小，优选积分周期的倍数，例如50 赫兹。

公开(公告)号：US08350757B2

公开(公告)日：2013-01-08

申请号：US13090703

申请日：2011-04-20

Applicant: Michael Ammann

Inventor： Michael Ammann

IPC: G01S19/37 ,  G01S19/35

CPC classification number: H04B1/70752 ,  G01S19/29 ,  H04B1/7095 ,  H04B2201/70715

Abstract: An acquisition unit of a GNSS receiver base band circuit includes an integrator with a number of preprocessors where an incoming digital signal is mixed with different frequency signals to compensate at least in part for clock drift and Doppler shifts. The resulting digital signals are, after an accumulation step reducing sample frequency, integrated over an integration period extending over several basic intervals of the length of a basic sequence characteristic for a GNSS satellite, so that samples separated by a multiple of the basic interval are superposed. The resulting data sequence of 1,023 digital values is stored in one of two memories and then, in mixers, sequentially shifted by post-integration frequencies which are multiples of the inverse of the length of the basic interval. The pre-integration frequencies employed in the preprocessors deviate, with one possible exception, from the post-integration frequencies and are usually smaller.

Abstract translation: GNSS接收器基带电路的获取单元包括具有多个预处理器的积分器，其中输入数字信号与不同的频率信号混合，以至少部分地补偿时钟漂移和多普勒频移。 所产生的数字信号在累积步骤降低采样频率之后，在对于GNSS卫星的基本序列特征的长度的几个基本间隔延伸的积分周期内积分，使得由基本间隔的倍数分隔的样本被叠加 。 所得到的1,023个数字值的数据序列被存储在两个存储器中的一个中，然后在混频器中，顺序地按照基本间隔长度的倒数的倍数的积分后频率移位。 预处理器中使用的预积分频率与后期积分频率偏离一个可能的例外，通常较小。

公开(公告)号：US08175137B2

公开(公告)日：2012-05-08

申请号：US12379230

申请日：2009-02-17

Applicant: Michael Ammann ,  Heinz Mathis

Inventor： Michael Ammann ,  Heinz Mathis

IPC: H04B1/00

CPC classification number: G01S19/30 ,  G01S19/37 ,  H04B1/70755 ,  H04B2201/70715

Abstract: In a GNSS receiver data sequences derived from a digital signal each with an internally generated correlation sequence derived from a basic sequence and mixed with frequency signals corresponding to various Doppler frequencies and in various phase positions with respect to the data sequence are correlated and the correlation values evaluated. In difficult conditions, e.g., RF levels of the signal of −145 dBm and less, correlation values produced with the same correlation sequence and phase position but with a plurality of data sequences are evaluated together in that, in an evaluator (49), every-correlation value is, in a comparator (52), compared with at least a first value threshold and a second value threshold, with the latter having a value between 1.3 and 1.7 times the value of the first and values −1, 0 or +1 assigned accordingly to a correlation term which is then added to an integer correlation counter which varies over a counter interval, e.g., [0, 15], in an adding unit (53). The correlation counters corresponding to the various Doppler frequencies and phase positions are stored in a memory unit (54). In an arbitration unit (51) a correlation indicator is derived from each correlation counter and the latest corresponding correlation value and the six largest correlation indicators selected and stored together with their Doppler frequencies and phase positions.

Abstract translation: 在GNSS接收器中，从数字信号导出的数据序列与每个具有从基本序列导出的内部产生的相关序列和与各种多普勒频率对应的频率信号以及相对于数据序列的各种相位位置混合的数字信号相关联，并且相关值 评估。 在困难的条件下，例如，信号的-145dBm以下的RF电平，以相同的相关序列和相位位置产生但是具有多个数据序列的相关值被一起评估为：在评估器（49）中，每个 在比较器（52）中，相关值与至少第一值阈值和第二值阈值进行比较，后者的值在第一值的值的1.3和1.7倍之间，值-1,0或+ 1相应地被分配给相关项，该相关项然后被添加到在加法单元（53）中在计数器间隔（例如[0,15]）上变化的整数相关计数器。 对应于各种多普勒频率和相位位置的相关计数器被存储在存储器单元（54）中。 在仲裁单元（51）中，从每个相关计数器导出相关指示符，并且与其多普勒频率和相位位置一起选择和存储的最新对应相关值和六个最大相关指标。

公开(公告)号：US20110148697A1

公开(公告)日：2011-06-23

申请号：US12970825

申请日：2010-12-16

Applicant: Andreas Thiel ,  Michael Ammann

Inventor： Andreas Thiel ,  Michael Ammann

IPC: G01S19/43

CPC classification number: G01S19/34 ,  G01S19/24

Abstract: A satellite positioning receiver. The receiver comprises: an RF front end, for receiving satellite positioning signals; an analogue to digital converter, for sampling the received signals to generate signal samples; a memory; and a processor, for processing the signal samples to derive code-phases and pseudo-ranges and to calculate a position fix. The processor has a first mode in which it is operable to process the samples as they are generated, to calculate the position fix. It also has a second mode in which it is operable to store the samples or the code-phases or pseudo-ranges in the memory for later processing.

Abstract translation: 卫星定位接收机。 接收机包括：RF前端，用于接收卫星定位信号; 模拟数字转换器，用于对接收的信号进行采样以产生信号样本; 记忆 以及处理器，用于处理信号样本以导出代码相位和伪距离并计算定位。 处理器具有第一模式，其中可操作以在样本生成时处理样本，以计算位置锁定。 它还具有第二模式，其中可操作地将存储样本或代码阶段或伪范围存储在存储器中用于稍后处理。