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Analysis on Algorithm of GPS Signal Non-Coherent Acquisition Scheme in MIMU/GPS Embedded Integrated Navigation
Author(s): 
Pages: 258-264
Year: Issue:  3
Journal: CHINESE JOURNAL OF SPACE SCIENCE

Keyword:  非相干搜索算法MIMU/GPS嵌入式组合导航MIMU辅助;
Abstract: 对于GPS信号的搜索捕获采用长积分时间相干搜索算法,会导致频率的搜索范围增加,而采用非相干积分搜索算法将增加平方损失.针对非相干搜索算法中由于多普勒频移估计偏差和码移估计偏差的影响而导致的平方损失,提出了基于微惯性测量单元MIMU/GPS嵌入式组合导航辅助的时域非相干搜索算法来提高对卫星信号的捕获能力,并对其捕获性进行仿真分析研究.结果表明,采用MIMU辅助的时域非相干搜索算法可以提高对GPS信号的捕获能力.
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