公开(公告)号：US20100141524A1

公开(公告)日：2010-06-10

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： G01S19/28

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：US07679558B2

公开(公告)日：2010-03-16

申请号：US11808687

申请日：2007-06-12

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： G01S1/00

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：US20100045516A1

公开(公告)日：2010-02-25

申请号：US12255219

申请日：2008-10-21

申请人： Mikio NAGAHARA

发明人： Mikio NAGAHARA

IPC分类号： G01S19/41

CPC分类号： G01S19/41 ,  G01S19/22 ,  G01S19/258 ,  G01S19/28

摘要： A positioning method that performs current position calculations and outputs a positioning result position includes searching for satellite signals transmitted from positioning satellites to acquire satellites, combining satellites among the acquired satellites to extract satellite sets used for positioning, performing first positioning calculations on each calculation-target satellite set among the extracted satellite sets using the satellite signals transmitted from the acquired satellites included in the calculation-target satellite set, performing second positioning calculations on each calculation-target satellite set among the extracted satellite sets using the satellite signals transmitted from the acquired satellites that are included in the calculation-target satellite set, but do not include a low-elevation-angle satellite, and determining whether or not a positioning result obtained using the calculation-target satellite set is appropriate based on the difference between a position calculated by the first positioning calculations and a position calculated by the second positioning calculations, the elevation angle of the low-elevation-angle satellite satisfying a given low elevation angle condition, and determining the positioning result position from the positions calculated by the first positioning calculations on the satellite sets for which the positioning result has been determined to be appropriate.

摘要翻译： 执行当前位置计算并输出定位结果位置的定位方法包括搜索从定位卫星发送的卫星信号以获取卫星，将所获取的卫星中的卫星组合以提取用于定位的卫星组，对每个计算目标执行第一定位计算 使用从包括在计算目标卫星组中的所获取的卫星发送的卫星信号在提取的卫星组之间设置卫星，使用从所获取的卫星发送的卫星信号对提取的卫星组中的每个计算目标卫星组进行第二定位计算 包括在计算目标卫星组中，但不包括低仰角卫星，并且基于ap的差异来确定使用计算目标卫星组获得的定位结果是否适当 通过第一定位计算计算出的积分和通过第二定位计算计算的位置，满足给定的低仰角条件的低仰角卫星的仰角，并且从由第一定位计算的位置确定定位结果位置 已经确定定位结果适合的卫星组的计算。

公开(公告)号：US20100007557A1

公开(公告)日：2010-01-14

申请号：US12565012

申请日：2009-09-23

申请人： Mikio NAGAHARA ,  Shinichi MITSUNAGA

发明人： Mikio NAGAHARA ,  Shinichi MITSUNAGA

IPC分类号： G01S1/00

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：US20090040104A1

公开(公告)日：2009-02-12

申请号：US12062183

申请日：2008-04-03

申请人： Shinichi MITSUNAGA ,  Mikio NAGAHARA

发明人： Shinichi MITSUNAGA ,  Mikio NAGAHARA

IPC分类号： G01S5/14

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： 基于根据E = k1的先验残差（APR）（APR值），PDOP值和目标卫星组的卫星数量来计算与每个卫星组对应的当前位置候选的评估点E. 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：US20120134392A1

公开(公告)日：2012-05-31

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： H04B1/707

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：US07928902B2

公开(公告)日：2011-04-19

申请号：US12255219

申请日：2008-10-21

申请人： Mikio Nagahara

发明人： Mikio Nagahara

IPC分类号： G01S1/00 ,  H04B7/185 ,  G01S19/28

CPC分类号： G01S19/41 ,  G01S19/22 ,  G01S19/258 ,  G01S19/28

摘要： A positioning method that performs current position calculations and outputs a positioning result position includes searching for satellite signals transmitted from positioning satellites to acquire satellites, combining satellites among the acquired satellites to extract satellite sets used for positioning, performing first positioning calculations on each calculation-target satellite set among the extracted satellite sets using the satellite signals transmitted from the acquired satellites included in the calculation-target satellite set, performing second positioning calculations on each calculation-target satellite set among the extracted satellite sets using the satellite signals transmitted from the acquired satellites that are included in the calculation-target satellite set, but do not include a low-elevation-angle satellite, and determining whether or not a positioning result obtained using the calculation-target satellite set is appropriate based on the difference between a position calculated by the first positioning calculations and a position calculated by the second positioning calculations, the elevation angle of the low-elevation-angle satellite satisfying a given low elevation angle condition, and determining the positioning result position from the positions calculated by the first positioning calculations on the satellite sets for which the positioning result has been determined to be appropriate.

摘要翻译： 执行当前位置计算并输出定位结果位置的定位方法包括搜索从定位卫星发送的卫星信号以获取卫星，将所获取的卫星中的卫星组合以提取用于定位的卫星组，对每个计算目标执行第一定位计算 使用从包括在计算目标卫星组中的所获取的卫星发送的卫星信号在提取的卫星组之间设置卫星，使用从所获取的卫星发送的卫星信号对提取的卫星组中的每个计算目标卫星组进行第二定位计算 包括在计算目标卫星组中，但不包括低仰角卫星，并且基于ap的差异来确定使用计算目标卫星组获得的定位结果是否适当 通过第一定位计算计算出的积分和通过第二定位计算计算的位置，满足给定的低仰角条件的低仰角卫星的仰角，并且从由第一定位计算的位置确定定位结果位置 已经确定定位结果适合的卫星组的计算。

公开(公告)号：US20100302097A1

公开(公告)日：2010-12-02

申请号：US12855255

申请日：2010-08-12

申请人： Mikio NAGAHARA

发明人： Mikio NAGAHARA

IPC分类号： G01S19/42

CPC分类号： G01S19/22 ,  G01S19/23 ,  G01S19/42

摘要： A position determination method includes: performing a positioning process that calculates a located position by performing positioning calculations using satellite signals; determining whether or not a convergence condition is satisfied based on current and preceding positioning results when the positioning process is performed, the convergence condition being specified as a condition for determining whether or not the positioning results of the repeated positioning processes have converged; and determining the located position calculated by the current positioning process to be an output position when the convergence condition is satisfied.

摘要翻译： 位置确定方法包括：通过使用卫星信号执行定位计算来执行计算定位位置的定位处理; 当执行定位处理时，基于当前和先前的定位结果确定是否满足收敛条件，将收敛条件指定为用于确定重复定位过程的定位结果是否收敛的条件; 以及当满足所述收敛条件时，将由当前定位处理计算出的定位位置确定为输出位置。

公开(公告)号：US07623069B2

公开(公告)日：2009-11-24

申请号：US12062183

申请日：2008-04-03

申请人： Shinichi Mitsunaga ,  Mikio Nagahara

发明人： Shinichi Mitsunaga ,  Mikio Nagahara

IPC分类号： G01S1/02

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： 基于根据E = k1的先验残差（APR）（APR值），PDOP值和目标卫星组的卫星数量来计算与每个卫星组对应的当前位置候选的评估点E. 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：US09354320B2

公开(公告)日：2016-05-31

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： G01S19/21 ,  G01S19/28 ,  G01S19/24

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。