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关于GPS网平面基准点的兼容性检验 被引量:2
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作者 陶波 冯林刚 刘敏 《西部资源》 2013年第4期181-182,共2页
GPS控制网在起算点包含粗差或错误的情况下,会导致GPS相对网形产生严重的扭曲和变形。因此,在约束平差前,必须对已知点的可靠性、兼容性进行检验分析,认为确实没有粗差或错误,方可用于约束平差。本文提出根据同一投影面上基准点间的相... GPS控制网在起算点包含粗差或错误的情况下,会导致GPS相对网形产生严重的扭曲和变形。因此,在约束平差前,必须对已知点的可靠性、兼容性进行检验分析,认为确实没有粗差或错误,方可用于约束平差。本文提出根据同一投影面上基准点间的相似变换关系,来检验GPS网平面基准点的可靠性、兼容性的方法。此法对于GPS网中只有2个基准点的情况也可判断其兼容性。 展开更多
关键词 GPS网 平面基准点 相似变换 兼容性检验
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关于GPS网平面基准点的兼容性检验 被引量:1
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作者 杨勇 《内蒙古水利》 2013年第1期183-184,共2页
GPS控制网在起算点包含粗差或错误的情况下,会导致GPS相对网形产生严重的扭曲和变形。因此,在约束平差前,必须对已知点的可靠性、兼容性进行检验分析,认为确实没有粗差或错误,方可用于约束平差。文章提出根据同一投影面上基准点间的相... GPS控制网在起算点包含粗差或错误的情况下,会导致GPS相对网形产生严重的扭曲和变形。因此,在约束平差前,必须对已知点的可靠性、兼容性进行检验分析,认为确实没有粗差或错误,方可用于约束平差。文章提出根据同一投影面上基准点间的相似变换关系,来检验GPS网平面基准点的可靠性、兼容性的方法,此法对于GPS网中只有2个基准点的情况也可判断其兼容性。 展开更多
关键词 GPS网 WGS84平差坐标 平面基准点 三参数转换 相似变换 兼容性检验
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Electromagnetic Compatibility Technology of Electric Vehicles and Its Development Trend
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作者 文宝忠 李波 周荣 《China Standardization》 2012年第2期58-61,共4页
The electromagnetic compatibility of electric vehicles is not only the important technology issue in researches,development and industrialization of electric vehicles,but also the key research area of ISO.In this pape... The electromagnetic compatibility of electric vehicles is not only the important technology issue in researches,development and industrialization of electric vehicles,but also the key research area of ISO.In this paper,both national and international standards of electromagnetic compatibility of electric vehicles are analyzed;it is also suggested that our standards of electromagnetic compatibility of electric vehicles be improved from several aspects such as testing items,test procedures,limit value,etc.The electromagnetic environment of electric vehicles is analyzed in terms of interfering sources,providing the solutions to electromagnetic compatibility and measures of reducing electromagnetic interference.Advanced equipments introduced into Chinese electromagnetic compatibility testing laboratories accelerate the pace of the researches on related technologies and standards;China will develop the standards system which covers from the complete electric vehicle to the key components,promote the technology improvement and industrialization work of Chinese electric vehicles,transform the latest achievements and advanced experiences of Chinese electric vehicles industry to the related standards and contribute the development of international standards. 展开更多
关键词 electric vehicles electromagnetic compatibility standards system TREND
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