发明名称 |
Mobile unit positioning device |
摘要 |
In a mobile-unit positioning device, phases of pseudo noise codes carried on satellite signals from satellites are observed at a mobile unit to measure a position of the mobile unit. A pseudo distance between one of the satellites and the mobile unit is measured for every satellite during a stop of the mobile unit using an observed value of the phase acquired during a stop of the mobile unit. An error index value indicating an error of the measured distance is computed based on the distances measured at points in time during a stop of the mobile unit. A weighting factor is determined based on the index value computed for every satellite. A weighted positioning computation using the determined weighting factor is performed to determine a position of the mobile unit during movement using an observed value of the phase acquired during movement.
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申请公布号 |
US7978127(B2) |
申请公布日期 |
2011.07.12 |
申请号 |
US20080444161 |
申请日期 |
2008.02.19 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
UEDA AKIHIRO;MAEDA IWAO;NAGAMIYA KIYOMI;TAJIMA YASUHIRO;HASEGAWA NAOTO |
分类号 |
G01S19/40;G01S5/14;G01S19/42;G01S19/48;G01S19/52 |
主分类号 |
G01S19/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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