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公开(公告)号:US06166684A
公开(公告)日:2000-12-26
申请号:US268129
申请日:1999-03-15
申请人: Shoji Yoshikawa , Katsuhiko Yamada , Hiroshi Koyama , Jun Tsukui
发明人: Shoji Yoshikawa , Katsuhiko Yamada , Hiroshi Koyama , Jun Tsukui
IPC分类号: G01C21/20 , B64G1/10 , B64G1/24 , G01S5/00 , G01S19/25 , G01S19/28 , G01S19/51 , G05D1/08 , H04B7/185
CPC分类号: G01S19/14 , B64G1/242 , G01S5/0072 , G01S19/42
摘要: An artificial satellite navigation system and method. The artificial satellite navigation system includes a global positioning system (GPS) receiver, local satellite, and remote satellite absolute navigation units estimating the position and velocity of a local satellite or a remote satellite and bias and drift of a clock in the receiver. A difference calculation unit calculates differences in position and velocity from the local satellite and remote satellite absolute navigation units. A relative navigation unit estimates the relative position and velocity of the local satellite with respect to the remote satellite. The relative navigation unit navigates the local satellite relative to the remote satellite.
摘要翻译: 人造卫星导航系统及方法。 人造卫星导航系统包括估计本地卫星或远程卫星的位置和速度的全球定位系统(GPS)接收机,本地卫星和远程卫星绝对导航单元以及接收机中时钟的偏置和漂移。 差分计算单元从本地卫星和远程卫星绝对导航单元计算位置和速度的差异。 相对导航单元估计本地卫星相对于远程卫星的相对位置和速度。 相对导航单元相对于远程卫星导航本地卫星。
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公开(公告)号:US06480787B2
公开(公告)日:2002-11-12
申请号:US09903744
申请日:2001-07-13
申请人: Shoji Yoshikawa , Katsuhiko Yamada , Jun Tsukui
发明人: Shoji Yoshikawa , Katsuhiko Yamada , Jun Tsukui
IPC分类号: G01C2100
CPC分类号: G01S19/51 , B64G1/36 , G01S5/0072 , G01S19/23 , G01S19/52
摘要: A global positioning system (GPS) receiving system which achieves an equivalent synchronization in time measurement of GPS signals utilizing software without requiring highly accurate synchronization for receiver clocks with time information embedded in the GPS signals. The GPS receiving system performs a relative navigation process after correcting a pseudorange with a time tag error which is attributable to inaccuracy of receiver clocks of first and second moving objects. A relative navigation process correcting an absolute error of a time tag with a clock bias is also described. A differential computation unit calculates a difference between the first pseudorange and the second pseudorange commonized by the time tag commonizing unit. Correction in a time tag error correction unit is performed for the selected GPS data with a common GPS satellite identification number.
摘要翻译: 一种全球定位系统(GPS)接收系统,其利用软件实现GPS信号的时间测量中的等效同步,而不需要在GPS信号中嵌入时间信息的接收机时钟的高精度同步。 GPS接收系统在利用可归因于第一和第二移动物体的接收器时钟的不准确的时间标签误差校正伪距之后执行相对导航处理。 还描述了用时钟偏差校正时间标签的绝对误差的相对导航处理。 差分计算单元计算第一伪距和由时间标签公用化单元公共的第二伪距之差。 对于具有公共GPS卫星识别号码的所选择的GPS数据执行时间标签误差校正单元的校正。
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