公开(公告)号：US08953721B2

公开(公告)日：2015-02-10

申请号：US13303094

申请日：2011-11-22

申请人： Mikio Nagahara ,  Hideo Sasahara

发明人： Mikio Nagahara ,  Hideo Sasahara

IPC分类号： G01S19/13 ,  G01S19/24 ,  G01S19/30

CPC分类号： G01S19/243 ,  G01S19/30

摘要： A cross correlation determination method includes: executing a first decoding of decoding a navigation message included in a received satellite signal using a first replica code and a second decoding of decoding the navigation message using a second replica code; and determining the occurrence of a cross correlation using the result of the first decoding and the result of the second decoding.

摘要翻译： 互相关确定方法包括：使用第一复制码执行解码包含在所接收的卫星信号中的导航消息的第一解码，以及使用第二副本码解码导航消息的第二解码; 以及使用第一解码的结果和第二解码的结果来确定互相关的发生。

公开(公告)号：US08761232B2

公开(公告)日：2014-06-24

申请号：US13225307

申请日：2011-09-02

申请人： Naoki Gobara ,  Mikio Nagahara

发明人： Naoki Gobara ,  Mikio Nagahara

IPC分类号： H04B1/709

CPC分类号： H04L27/22 ,  G01S19/24 ,  G01S19/246

摘要： A bit change determination method includes performing a correlation operation of a signal received from a satellite and a replica code, segmenting the signal using a bit transition timing of navigation message data and performing a first calculation to calculate the result of the correlation operation for a first period having N (N≧1) continuous unit periods with a bit period of navigation message data as a unit period, performing a second calculation to calculate the result of the correlation operation for a second period having M (M>1) continuous unit periods adjacent to the first period, and determining whether a bit value changes or not at a boundary between the first period and the second period using the first and second calculation results.

摘要翻译： 位改变确定方法包括执行从卫星接收的信号和复制码的相关操作，使用导航消息数据的位转换定时对信号进行分段，并执行第一计算，以计算第一 具有N（N≥1）个连续单位周期的周期，其中导航消​​息数据的位周期作为单位周期，执行第二计算，以计算具有M（M> 1）个连续单位周期的第二周期的相关运算结果 并且使用第一和第二计算结果来确定位值是否在第一周期和第二周期之间的边界处改变。

公开(公告)号：US20120154205A1

公开(公告)日：2012-06-21

申请号：US13329153

申请日：2011-12-16

申请人： Hideo Sasahara ,  Mikio Nagahara

发明人： Hideo Sasahara ,  Mikio Nagahara

IPC分类号： G01S7/40

CPC分类号： G01S19/21 ,  G01S19/243 ,  G01S19/28

摘要： A method of determining adequacy of acquisition includes: attempting to acquire a satellite signal from a satellite and decoding first satellite orbit data; and determining the adequacy of acquisition of the satellite signal by using the first satellite orbit data and second satellite orbit data that has been acquired from the satellite.

摘要翻译： 确定获取充分性的方法包括：尝试从卫星获取卫星信号并解码第一卫星轨道数据; 以及通过使用从卫星获得的第一卫星轨道数据和第二卫星轨道数据来确定卫星信号的获取的适当性。

公开(公告)号：US08164513B2

公开(公告)日：2012-04-24

申请号：US12576873

申请日：2009-10-09

申请人： Shinichi Mitsunaga ,  Mikio Nagahara

发明人： Shinichi Mitsunaga ,  Mikio Nagahara

IPC分类号： G01S19/42 ,  G01S19/46 ,  G01S19/09

CPC分类号： G01S19/22 ,  G01S19/20

摘要： An evaluation point E of a present position candidate corresponding to each satellite set is calculated based on an a priori residual (APR) (APR value), a PDOP value, and the number of satellites of the target satellite set according to E=k1·f1(APR)+k2·f2(PDOP)+k3·f3(number of satellites). Evaluation coefficients k1 to k3 for respectively weighting evaluation functions f1 to f3 are determined based on an APR average value.

摘要翻译： 基于先验残差（APR）（APR值），PDOP值和目标卫星的卫星数根据E = k1·········· f1（APR）+ k2·f2（PDOP）+ k3·f3（卫星数）。 基于APR平均值确定用于分别加权评价函数f1〜f3的评价系数k1〜k3。

公开(公告)号：US20120057662A1

公开(公告)日：2012-03-08

申请号：US13225307

申请日：2011-09-02

申请人： Naoki Gobara ,  Mikio Nagahara

发明人： Naoki Gobara ,  Mikio Nagahara

IPC分类号： H04L27/06

CPC分类号： H04L27/22 ,  G01S19/24 ,  G01S19/246

摘要： A bit change determination method includes performing a correlation operation of a signal received from a satellite and a replica code, segmenting the signal using a bit transition timing of navigation message data and performing a first calculation to calculate the result of the correlation operation for a first period having N (N≧1) continuous unit periods with a bit period of navigation message data as a unit period, performing a second calculation to calculate the result of the correlation operation for a second period having M (M>1) continuous unit periods adjacent to the first period, and determining whether a bit value changes or not at a boundary between the first period and the second period using the first and second calculation results.

摘要翻译： 位改变确定方法包括执行从卫星接收的信号和复制码的相关操作，使用导航消息数据的位转换定时对信号进行分段，并执行第一计算，以计算第一 具有N（N≥1）个连续单位周期的周期，其中导航消​​息数据的位周期作为单位周期，执行第二计算，以计算具有M（M> 1）个连续单位周期的第二周期的相关运算结果 并且使用第一和第二计算结果来确定位值是否在第一周期和第二周期之间的边界处改变。

公开(公告)号：US08022865B2

公开(公告)日：2011-09-20

申请号：US12695670

申请日：2010-01-28

申请人： Shigeru Imafuku ,  Mikio Nagahara ,  Shunichi Mizuochi ,  Akifumi Hayashi ,  Tomoyuki Kurata

发明人： Shigeru Imafuku ,  Mikio Nagahara ,  Shunichi Mizuochi ,  Akifumi Hayashi ,  Tomoyuki Kurata

IPC分类号： G01S19/42

CPC分类号： G01S19/29 ,  G01S19/23

摘要： A terminal device includes a plurality of search channel sections which search for a positioning satellite, a candidate reception frequency calculation section which calculates a candidate reception frequency of a first acquisition target satellite by causing the search channel sections to perform the correlation accumulation process for a first accumulation time, a candidate frequency confirmation section which confirms reliability of the candidate reception frequency by causing the search channel sections to perform the correlation accumulation process for a second accumulation time longer than the first accumulation time, a final frequency calculation section which calculates a final frequency by causing the search channel sections to perform the correlation accumulation process for a third accumulation time longer than the second accumulation time, and a first difference calculation section which calculates a difference between an estimated synchronization frequency corresponding to each first acquisition target satellite and the final frequency.

摘要翻译： 一种终端设备包括搜索定位卫星的多个搜索频道部分，候选接收频率计算部分，其通过使搜索频道部分执行第一采集目标卫星的相关累积处理来计算第一采集目标卫星的候选接收频率 累积时间，候选频率确认部，其通过使搜索频道部对于比第一累积时间长的第二累积时间进行相关累积处理来确认候选接收频率的可靠性;最终频率计算部，其计算最终频率 通过使搜索频道部分对比第二累积时间长的第三累积时间执行相关累积处理，以及第一差分计算部分，其计算估计的同步频率对应t o每个首次采集目标卫星和最终频率。

公开(公告)号：US07612713B2

公开(公告)日：2009-11-03

申请号：US12062159

申请日：2008-04-03

申请人： Mikio Nagahara ,  Shinichi Mitsunaga

发明人： Mikio Nagahara ,  Shinichi Mitsunaga

IPC分类号： G01S1/02

CPC分类号： G01S19/22 ,  G01S19/258 ,  G01S19/28

摘要： In the first positioning, a positioning process that calculates the present position based on acquired GPS satellite signals (step A3) is performed a plurality of times. A number of times that the difference (position difference) ΔP between the calculated present located position and the preceding located position is successively equal to or less than a given value is counted using a position counter, and a number of times that the difference (time difference) ΔT between the present time error and the preceding time error is successively equal to or less than a given value is counted using a time counter each time the positioning process is performed (step A5). A position threshold value and a time threshold value are determined by changing a reference threshold value by an amount corresponding to an APR average value (step A7). When the position count value has reached the position threshold value (step A9: YES) and the time count value has reached the time threshold value (step A11: YES), the present position is determined to be the first located position and output (step A13).

摘要翻译： 在第一定位中，执行基于获取的GPS卫星信号计算当前位置的定位处理（步骤A3）多次。 使用位置计数器对计算出的当前位置位置和前一定位位置之间的差（位置差）ΔP的连续等于或小于给定值的次数进行计数，并且该次数（时间 差异）当前时间误差和前一时间误差之间的DeltaT在每次执行定位处理时使用时间计数器计数，给定值被计数（步骤A5）。 通过将参考阈值改变与APR平均值对应的量来确定位置阈值和时间阈值（步骤A7）。 当位置计数值达到位置阈值（步骤A9：是）并且时间计数值已达到时间阈值时（步骤A11：是），将当前位置确定为第一定位位置并输出（步骤 A13）。

公开(公告)号：US20060012517A1

公开(公告)日：2006-01-19

申请号：US11180696

申请日：2005-07-14

申请人： Mikio Nagahara

发明人： Mikio Nagahara

IPC分类号： G01S5/14

CPC分类号： G01S19/41 ,  G01S19/20 ,  G01S19/25

摘要： A positioning auxiliary information provision device 30 has: a auxiliary information generation device to generate positioning auxiliary information including satellite information; a satellite information update necessity determination device to determine the necessity of updating the satellite information; a satellite information update notification information generation device to generate satellite information update notification information indicating that the satellite information needs to be updated based on the determination result of the satellite information update necessity determination device; a positioning auxiliary information transmission device to transmit the positioning auxiliary information via a mediation device 60 to terminal devices 80a to 80c indicated in provision target terminal information; and a satellite information update notification information transmission device to transmit the satellite information update notification information via the mediation device 60 to the terminal devices 80a to 80c indicated in the provision target terminal information.

摘要翻译： 定位辅助信息提供装置30具有：辅助信息生成装置，生成包含卫星信息的定位辅助信息; 卫星信息更新必要性确定装置，用于确定更新卫星信息的必要性; 卫星信息更新通知信息生成装置，根据卫星信息更新必要性判定装置的判定结果生成表示卫星信息需要更新的卫星信息更新通知信息; 定位辅助信息传输设备，用于经由中介设备60将定位辅助信息发送到在提供目标终端信息中指示的终端设备80a至80c; 以及卫星信息更新通知信息发送装置，用于经由中介装置60将卫星信息更新通知信息发送到在提供对象终端信息中指示的终端装置80a〜80c。