【作者】 张丽荣； 马利华； 季海福； 王晓岚；

【Author】 Lirong Zhang~1,Lihua Ma~1,Haifu Ji~(1,2),Xiaolan Wang~(1,2) 1.National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China 2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China

【机构】 中国科学院国家天文台； 中国科学院研究生院；

【摘要】 传统的气压测高方法通过测量大气压力,利用标准大气模型计算测点的海拔高度,禾考虑由于大气随时间的无规律变化引起的测高误差,因此该方法精度不高。利用差分的思想,建立已知精确高程的气压测高差分基准站,用户接收基准站传输的气象数据,结合本地测量数据通过解算实时获得高精度、高可靠性的高程值。这种采用基点修正的方法提高了气压测高方法的精度,改善了其可用性。本文介绍了差分气压测高方法的原理和数学模型;分析了影响差分气压测高精度的主要因素;对该方法的精度和误差做了详细分析;并针对该方法开展了静态和动态试验验证,试验结果与理论分析一致。更多还原

【Abstract】 The traditional barometric altimetry to get the absolute height has poor precision mainly because of the climate and weather、gravity and temperature effect on atmospheric pressure.By introducing reference point correction into barometric altimetry can improve the accuracy of the height being measured and extend its application range since the error caused by slow variation of atmospheric pressure and temperature is eliminated.Users receive the meteorological data from barometric reference stations and calculate the local height through local measurement by high precision.This paper introduces the principal of the differential barometric altimetry first,then analyzes its accuracy and error,further tests static and dynamic are operated and the results are consistent with theoretical analysis.更多还原