燕欢;罗孝文;郭杭;

• 1:南昌大学
• 2:国家海洋局第二海洋研究所

摘要(Abstract)：

针对在导航实践中低成本MEMS使用传统紧耦合方法计算精度受到限制的问题,提出了一种采用载波相位平滑伪距GNSS PPP/INS紧耦合的算法。实验表明,使用相位平滑伪距的GNSS PPP/INS紧耦合方法后低精度的MEMS和GPS组合位置精度为dm级,速度精度为cm/s甚至mm/s,比传统C/A码紧耦合定位精度高,有较好的收敛性;其次当增加相位平滑的历元数后精度也相应提高。当出现GPS信号中断时,该方法能够加速中断以后滤波收敛的速度,将导航精度控制在中高精度惯导作业要求范围内。该方法节约了导航作业的设备成本,具有一定实际意义。

关键词(KeyWords)： 组合导航;紧耦合;精密单点定位;相位平滑伪距;卡尔曼滤波

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41374039,41164001)

作者(Authors): 燕欢;罗孝文;郭杭;

DOI: 10.16251/j.cnki.1009-2307.2017.03.005

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