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：US20090195452A1

公开(公告)日：2009-08-06

申请号：US12418883

申请日：2009-04-06

申请人： Shunichi MIZUOCHI ,  Akifumi HAYASHI

发明人： Shunichi MIZUOCHI ,  Akifumi HAYASHI

IPC分类号： G01S1/00

CPC分类号： G01S19/09 ,  G01S19/23 ,  G01S19/24 ,  G01S19/29 ,  G01S19/30

摘要： A terminal apparatus includes a control unit and a positioning device. The control unit determines a first satellite-to-be-acquired from among a plurality of SPS satellites, and generates an initial search frequency for the first satellite-to-be-acquired. The positioning device has a plurality of search units, and is configured to acquire the first satellite-to-be-acquired using the plurality of search units. The control unit determines first difference information, which is a difference between the initial search frequency and the frequency at which the first satellite-to-be-acquired is acquired. The control unit generates corrected search frequencies for other SPS satellites, using the first difference information. The positioning device acquires other necessary SPS satellites using the corresponding corrected search frequencies. The terminal apparatus can acquire SPS satellites accurately even when there has been a frequency shift in the terminal apparatus since the last positioning.

摘要翻译： 终端装置包括控制单元和定位装置。 所述控制单元从多个SPS卫星中确定要获取的第一卫星，并且生成用于所述第一待卫星的初始搜索频率。 定位装置具有多个搜索单元，并且被配置为使用多个搜索单元获取要获取的第一卫星。 控制单元确定第一差分信息，其是初始搜索频率与获取第一待卫星的频率之间的差。 所述控制单元使用所述第一差分信息来生成其他SPS卫星的校正搜索频率。 定位装置使用对应的校正搜索频率来获取其它必要的SPS卫星。 终端装置即使在终端装置中自上次定位以来发生频移时，也能够准确地获取SPS卫星。

公开(公告)号：US20090054083A1

公开(公告)日：2009-02-26

申请号：US12259343

申请日：2008-10-28

申请人： Akifumi HAYASHI

发明人： Akifumi HAYASHI

IPC分类号： H04W64/00

CPC分类号： G01S19/09 ,  G01S5/0027 ,  G01S19/30

摘要： A positioning system capable of reducing the volume of data communication in a server positioning system is provided. A terminal device has the information for a positioning transmitting section and can transmit information for positioning containing the actually measured current positioning basic information and/or the estimated basic information to the positioning device. The amount of the estimated basic information is smaller than the amount of the current positioning basic information, thus, the amount of information that the terminal device transmits to the positioning device becomes smaller in the case where the terminal device transmits the estimated basic information with respect to the position information satellite having the difference within the allowable range compared to the case where it transmits only the actually measured current positioning basic information with respect to all of the position information satellites.

摘要翻译： 提供了能够减少服务器定位系统中的数据通信量的定位系统。 终端装置具有用于定位发送部的信息，并且能够向定位装置发送包含实际测量的当前定位基本信息和/或估计基本信息的定位信息。 估计基本信息的量小于当前定位基本信息量，因此终端设备向定位设备发送的信息量在终端设备传送估计基本信息的情况下变小 与仅发送关于所有位置信息卫星的实际测量的当前定位基本信息的情况相比，具有在允许范围内的差异的位置信息卫星。