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GPS-RTK测量系统性误差修正方法研究
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作者 高洁纯 张军 《资源信息与工程》 2018年第6期120-121,共2页
GPS-RTK技术是通过卫星信号来实现实时动态精准定位的一种技术,能在一定程度上降低测量工作难度,提高工作效率,但在测量过程中会有系统性测量误差的存在。本文介绍了GPS-RTK技术工作原理,分析了测量过程中的误差来源,提出了针对性的改... GPS-RTK技术是通过卫星信号来实现实时动态精准定位的一种技术,能在一定程度上降低测量工作难度,提高工作效率,但在测量过程中会有系统性测量误差的存在。本文介绍了GPS-RTK技术工作原理,分析了测量过程中的误差来源,提出了针对性的改进措施,进而提高测量精度和可靠性。 展开更多
关键词 GPS-RTK技术 系统性测量误差 误差修正
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Performance research and optimization on the fan test system based on experiment 被引量:1
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作者 Yatao HU Yongfei Xue +1 位作者 Ying Liu Keqi Wu 《Journal of Thermal Science》 SCIE EI CAS CSCD 2011年第2期139-143,共5页
To investigate the fan performance of air conditioning system, two different configuration fan test systems are designed. All scale simulation of the two systems provide the basis for design and improvement of air con... To investigate the fan performance of air conditioning system, two different configuration fan test systems are designed. All scale simulation of the two systems provide the basis for design and improvement of air conditioning system fans to improve the internal flow, increase air volume, and reduce the noise. The conclusion that disturbance on flow of nuzzle outlet is the main sources of measurement error about 5% can be proved by the comparative analysis of the results between computation and experiment. Through Optimization Design of Partial Structure they all meet the industry standard, measurement error less than 1.5%. 展开更多
关键词 test system all scale simulation disturbance on flow optimization design
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