An innovative GNSS/MEMS-basd INS system for precision navigation and hydrographic surveying

一种基于 GNSS/MEMS 的创新 INS 系统，用于精确导航和水文测量

• 批准号: 239012-2011
• 负责人: ElRabbany, Ahmed
• 金额: $ 1.46万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=547170
• 关键词: innovative; GNSS; MEMS; basd; INS

The current state of technology in modern multibeam hydrographic surveying makes use of differential-based integrated GPS/INS systems for positioning and attitude of the marine vessel. Unfortunately, in addition to being relatively expensive and complex, such technology can only be used for coastal (i.e., within the state's territorial sea) operations. Beyond this distance limit, the errors at the reference and the rover receivers, become less correlated and do not cancel out sufficiently through double differencing. This leads to unsuccessful fixing for the ambiguity parameters, which in turn deteriorates the positioning and attitude accuracy.

现代多波束水文测量的技术现状利用基于差分的集成 GPS/INS 系统来进行船舶的定位和姿态。不幸的是，除了相对昂贵和复杂之外，这种技术只能用于沿海（即国家领海内）作业。超出此距离限制，参考站和流动站接收器处的误差相关性会降低，并且无法通过双差分充分抵消。这会导致模糊度参数修复失败，从而降低定位和姿态精度。