公开(公告)号：US06909738B2

公开(公告)日：2005-06-21

申请号：US09826260

申请日：2001-04-04

申请人： David Akopian ,  Ilkka Kontola ,  Harri Valio ,  Seppo Turunen

发明人： David Akopian ,  Ilkka Kontola ,  Harri Valio ,  Seppo Turunen

IPC分类号： H04B1/707 ,  H04L27/00 ,  H04L27/227 ,  H04L27/30

CPC分类号： G01S19/29 ,  H04B1/7075 ,  H04B2201/70715 ,  H04L27/2272 ,  H04L2027/0057 ,  H04L2027/0065

摘要： The invention relates to a method for acquiring a receiver (1) into a code modulated spread spectrum signal received by the receiver (1). In the method at least one replica code (r) is used which corresponds to a code used with the modulation having a pre-determined number of chips, and an examination phase is performed, in which a frequency shift of the signal within a selected frequency area is examined, and a code phase of the code used with the modulation is examined. In the method the frequency shift examination is divided into a first estimation phase and a second estimation phase, wherein in the first estimation phase the selected frequency area is divided into a first set of frequencies, and in the second estimation phase a second set of frequencies is examined nearby each frequency of the first set of frequencies. Further, a comparison for frequencies of the second set of frequencies is performed using the received signal and the replica code (r), and the results of the comparison are used to estimate the correct frequency shift.

摘要翻译： 本发明涉及一种用于将接收机（1）采集到由接收机（1）接收的码调制扩频信号中的方法。 在该方法中，使用至少一个复制码（r），其对应于具有预定数量的码片的调制使用的码，并且执行检查相位，其中在所选频率内的信号的频移 检查区域，并且检查与调制一起使用的代码的代码相位。 在该方法中，频移检查被分为第一估计阶段和第二估计阶段，其中在第一估计阶段中，将所选择的频率区域划分为第一组频率，在第二估计阶段中，将第二组频率 在第一组频率的每个频率附近检查。 此外，使用接收信号和复制码（r）进行第二组频率的频率比较，并且比较结果用于估计正确的频移。

公开(公告)号：US06909736B2

公开(公告)日：2005-06-21

申请号：US09737166

申请日：2000-12-14

申请人： David Akopian ,  Harri Valio ,  Seppo Turunen

发明人： David Akopian ,  Harri Valio ,  Seppo Turunen

IPC分类号： H04B1/7075 ,  H04B15/00 ,  H04K1/00 ,  H04L27/30

CPC分类号： H04B1/7075

摘要： A method, corresponding apparatus, and corresponding system for acquiring a received spread spectrum signal, the received signal having a carrier component at a carrier frequency, a code component having a code period, and a data component, the acquiring including matching the phase of a replica of the code component to the phase of the received code component and also determining any shift in the carrier frequency away from a transmitted carrier frequency, the method including the steps of: performing a first acquisition of the received signal so as to provide an approximately estimated carrier frequency and a phase of the replica and also so as to provide a code-wiped and an approximately carrier-wiped signal; and performing a second acquisition of the approximately carrier-wiped signal, the second acquisition including a substep of data wipe-off involving a squaring or similar operation on a signal derived from the approximately carrier-wiped signal; thereby providing a correction to the approximately estimated carrier frequency, a correction that accounts for the carrier frequency shift remaining after the first acquisition. The invention also comprehends a method including only a single acquisition, an acquisition including a data wipe-off involving a squaring or similar operation on a signal having a data component and a frequency component, i.e. the invention is of use in acquiring any kind of signal having a carrier component and a data component, regardless of whether a first, typically relatively coarse acquisition is performed.

摘要翻译： 一种用于获取接收的扩展频谱信号的方法，相应的装置和对应的系统，所述接收信号具有载波频率的载波分量，具有码周期的码分量和数据分量，所述获取包括匹配a 代码分量的副本到接收的代码分量的相位，并且还确定载波频率远离发射的载波频率的任何偏移，该方法包括以下步骤：执行接收信号的第一次采集，以便提供大致 估计载波频率和副本的相位，并且还提供代码擦除和近似载波擦除的信号; 并且执行对所述近似载波擦除信号的第二次获取，所述第二获取包括涉及对从所述近似载波擦除信号导出的信号进行平方或类似操作的数据擦除子步骤; 从而对近似估计的载波频率提供校正，该校正考虑了在第一次采集之后剩余的载波频移。 本发明还包括仅包括单次采集的方法，包括涉及对具有数据分量和频率分量的信号进行平方或类似操作的数据擦除的采集，即本发明可用于获取任何种类的信号 具有载波分量和数据分量，而不管是否执行第一，通常较粗略的采集。

公开(公告)号：US20050129146A1

公开(公告)日：2005-06-16

申请号：US10734739

申请日：2003-12-12

申请人： David Akopian ,  Seppo Turunen ,  Samuli Pietila ,  Harri Valio

发明人： David Akopian ,  Seppo Turunen ,  Samuli Pietila ,  Harri Valio

IPC分类号： G01S1/00 ,  H04B1/707 ,  H04L27/14

CPC分类号： H04B1/70775 ,  G01S19/29 ,  G01S19/30 ,  H04B1/70752 ,  H04B2201/70715

摘要： The invention relates to an apparatus supporting an acquisition of a received code modulated signal by determining the correlation between the received code modulated signal and an available replica code sequence at different code phases. It is proposed that the apparatus comprises a first acquisition engine for selecting code phases which are good candidates for being the code phase at which a received code modulated signal and an available replica code sequence have the highest correlation. The apparatus further comprises a second acquisition engine for performing a refined comparison between a received code modulated signal and an available replica code sequence for each code phase selected by the first acquisition engine. The invention relates equally to a corresponding method and to a system comprising such an apparatus and a network.

摘要翻译： 本发明涉及一种支持通过在不同代码阶段确定所接收的码调制信号与可用复制码序列之间的相关性来支持所接收的码调制信号的获取的装置。 提出该装置包括：第一采集引擎，用于选择作为接收码调制信号和可用复制码序列具有最高相关性的码相位的良好候选的码相位。 该装置还包括第二采集引擎，用于对接收到的代码调制信号和由第一采集引擎选择的每个代码阶段的可用复制代码序列进行精细比较。 本发明同样涉及相应的方法和涉及包括这种装置和网络的系统。

公开(公告)号：US07336696B2

公开(公告)日：2008-02-26

申请号：US10734739

申请日：2003-12-12

申请人： David Akopian ,  Seppo Turunen ,  Samuli Pietila ,  Harri Valio

发明人： David Akopian ,  Seppo Turunen ,  Samuli Pietila ,  Harri Valio

IPC分类号： H04B1/69

CPC分类号： H04B1/70775 ,  G01S19/29 ,  G01S19/30 ,  H04B1/70752 ,  H04B2201/70715

摘要： The invention relates to an apparatus supporting an acquisition of a received code modulated signal by determining the correlation between the received code modulated signal and an available replica code sequence at different code phases. It is proposed that the apparatus comprises a first acquisition engine for selecting code phases which are good candidates for being the code phase at which a received code modulated signal and an available replica code sequence have the highest correlation. The apparatus further comprises a second acquisition engine for performing a refined comparison between a received code modulated signal and an available replica code sequence for each code phase selected by the first acquisition engine. The invention relates equally to a corresponding method and to a system comprising such an apparatus and a network.

摘要翻译： 本发明涉及一种支持通过在不同代码阶段确定所接收的码调制信号与可用复制码序列之间的相关性来支持所接收的码调制信号的获取的装置。 提出该装置包括：第一采集引擎，用于选择作为接收码调制信号和可用复制码序列具有最高相关性的码相位的良好候选的码相位。 该装置还包括第二采集引擎，用于对接收到的代码调制信号和由第一采集引擎选择的每个代码阶段的可用复制代码序列进行精细比较。 本发明同样涉及相应的方法和涉及包括这种装置和网络的系统。

公开(公告)号：US20050229068A1

公开(公告)日：2005-10-13

申请号：US10735285

申请日：2003-12-12

申请人： David Akopian ,  Harri Valio

发明人： David Akopian ,  Harri Valio

IPC分类号： G06F17/15 ,  H04L1/00 ,  G06F11/00 ,  G06F11/30 ,  G08C25/00 ,  H03M13/00

CPC分类号： H04B1/7085 ,  G06F17/15 ,  H04B2201/70707

摘要： To reduce the complexity of the correlation in a correlation based tracking of a code modulated signal received at a receiver, received samples and available replica samples are aligned to each other and the positions of the samples in the received signal and in the replica code sequences are grouped, each group comprising all positions at which the composition of the values of the samples of all of the replica code sequences is similar. The values of the received samples which are associated to a respective group are combined separately for each group to obtain a respective intermediate result. Then, a correlation value is determined for each replica code sequence by combining the intermediate results obtained for all groups separately for each replica code sequence, taking into account the values of the samples of the replica sequences in the respective group.

摘要翻译： 为了减少在接收机处接收的码调制信号的基于相关的跟踪中的相关性的复杂性，接收的样本和可用的副本样本彼此对准，并且接收信号和副本码序列中的样本的位置是 分组，每个组包括所有复制代码序列的样本的值的组成相似的所有位置。 将与各组相关联的接收样本的值分别组合为每组，以获得各自的中间结果。 然后，考虑到各组中的副本序列的样本的值，通过组合针对每个复制码序列分别获得的针对所有组的中间结果，确定每个复制码序列的相关值。

公开(公告)号：US20050195789A1

公开(公告)日：2005-09-08

申请号：US10792676

申请日：2004-03-02

申请人： David Akopian ,  Harri Valio

发明人： David Akopian ,  Harri Valio

IPC分类号： H04B7/216

CPC分类号： G01S19/246

摘要： The invention relates to the reception of code-modulated signals by a receiver. In order to prevent an incorrect synchronization between a received code-modulated signal and an available replica code, partial correlations are performed between a respective subset of samples of the replica code and samples of the received code-modulated signal associated to the respective subset of samples of the replica code at a specific alignment between the received code-modulated signal and the replica code. The results of the partial correlations are then compared to each other, and it may be decided based on this comparison whether the replica code corresponds to a code employed for code-modulating the received code-modulated signal.

摘要翻译： 本发明涉及接收机对码调制信号的接收。 为了防止接收的码调制信号与可用复制码之间的不正确的同步，在副本码的相应样本子集与与各个样本子集相关联的接收码调制信号的样本之间执行部分相关 在接收到的码调制信号和复制码之间的特定对准中的复制码。 然后将部分相关的结果相互比较，并且可以基于该比较来确定副本代码是否对应于用于对接收到的码调制信号进行码调制的码。

公开(公告)号：US06771215B2

公开(公告)日：2004-08-03

申请号：US10402340

申请日：2003-03-27

申请人： David Akopian ,  Harri Valio

发明人： David Akopian ,  Harri Valio

IPC分类号： G01S514

CPC分类号： G01S19/24 ,  G01S19/256 ,  G01S19/258

摘要： The invention relates to a method for determining the time of transmission of a signal part of a code modulated signal transmitted by a beacon of a positioning system and received by a receiver of the positioning system. In order to enable such a determination in weak signal conditions, it is proposed that measured subcomponents of the time of transmission of at least two signal parts are compared with corresponding predicted subcomponents in a way resulting in a combined difference for all signal parts. The comparison is performed for a plurality of assumed errors in the predicted subcomponent. The accurate time of transmission of a signal part is then determined based on the determined error value which results in the smallest combined difference. The invention relates equally to a corresponding receiver and to a corresponding positioning system.

公开(公告)号：US07876738B2

公开(公告)日：2011-01-25

申请号：US10792676

申请日：2004-03-02

申请人： David Akopian ,  Harri Valio

发明人： David Akopian ,  Harri Valio

IPC分类号： H04B7/216

CPC分类号： G01S19/246

摘要： In order to prevent an incorrect synchronization between a received code-modulated signal and an available replica code, partial correlations are performed between a respective subset of samples of the replica code and samples of the received code-modulated signal associated to the respective subset of samples of the replica code at a specific alignment between the received code-modulated signal and the replica code. The results of the partial correlations are then compared to each other, and it may be decided based on this comparison whether the replica code corresponds to a code employed for code-modulating the received code-modulated signal.

摘要翻译： 为了防止接收的码调制信号与可用复制码之间的不正确的同步，在副本码的相应样本子集与与各个样本子集相关联的接收码调制信号的样本之间执行部分相关 在接收到的码调制信号和复制码之间的特定对准中的复制码。 然后将部分相关的结果相互比较，并且可以基于该比较来确定副本代码是否对应于用于对接收到的码调制信号进行码调制的码。

公开(公告)号：US06894645B1

公开(公告)日：2005-05-17

申请号：US10734080

申请日：2003-12-11

申请人： David Akopian ,  Harri Valio ,  Jari Syrjärinne

发明人： David Akopian ,  Harri Valio ,  Jari Syrjärinne

IPC分类号： G01S1/00 ,  G01S1/08 ,  G01S3/02 ,  G01S5/14 ,  G01S19/11 ,  H04B7/185

CPC分类号： G01S19/50 ,  G01S19/25

摘要： The invention relates to a method for estimating the position of a receiver receiving code modulated signals from at least one beacon. The method comprises delimiting a region containing the receiver position based on a code modulated signal received at the receiver from at least one beacon and on available information including at least an initial information on the receiver position. The method further comprises estimating the receiver position as a position within the delimited region which minimizes an error criterion. The invention relates equally to such a receiver, to a system comprising such a receiver and to a corresponding software program product enabling an estimation of the position of a receiver.

摘要翻译： 本发明涉及一种用于估计接收来自至少一个信标的码调制信号的接收机的位置的方法。 该方法包括基于从接收机从至少一个信标接收的码调制信号和至少包括关于接收机位置的初始信息的可用信息来界定包含接收机位置的区域。 该方法还包括将接收机位置估计为在限定区域内的最小化误差准则的位置。 本发明同样涉及这样的接收机，包括这种接收机的系统和能够估计接收机的位置的相应的软件程序产品。

公开(公告)号：US07124352B2

公开(公告)日：2006-10-17

申请号：US10735285

申请日：2003-12-12

申请人： David Akopian ,  Harri Valio

发明人： David Akopian ,  Harri Valio

IPC分类号： H03M13/00 ,  G06F7/02

CPC分类号： H04B1/7085 ,  G06F17/15 ,  H04B2201/70707

摘要： To reduce the complexity of the correlation in a correlation based tracking of a code modulated signal received at a receiver, received samples and available replica samples are aligned to each other and the positions of the samples in the received signal and in the replica code sequences are grouped, each group comprising all positions at which the composition of the values of the samples of all of the replica code sequences is similar. The values of the received samples which are associated to a respective group are combined separately for each group to obtain a respective intermediate result. Then, a correlation value is determined for each replica code sequence by combining the intermediate results obtained for all groups separately for each replica code sequence, taking into account the values of the samples of the replica sequences in the respective group.

摘要翻译： 为了减少在接收机处接收的码调制信号的基于相关的跟踪中的相关性的复杂性，接收的样本和可用的副本样本彼此对准，并且接收信号和副本码序列中的样本的位置是 分组，每个组包括所有复制代码序列的样本的值的组成相似的所有位置。 将与各组相关联的接收样本的值分别组合为每组，以获得各自的中间结果。 然后，考虑到各组中的副本序列的样本的值，通过组合针对每个复制码序列分别获得的针对所有组的中间结果，确定每个复制码序列的相关值。