数字气压高度表数据处理算法分析

The Analysis of Digital Barometer Processing Algorithms

数字气压高度表在航空、测绘、军事等多个领域得到广泛的应用,提高气压高度表的测量精度可以扩展其应用范围;结合数字气压高度表的气压与高度转换的物理原理和国际标准大气(ISA)模型,分析了气压高度转换的原理性误差以及测量数据误差产生的主要原因,提出了线性修正、参考点修正的气压高度模型修正方法,并对测量结果可采样数字滤波算法进行了分析。

With the wide range of applications of the digital barometer in many fields such as aviation, mapping and military field, the improvement of measurement precision can expand its range of applica- tions. Based on the physical principle of the digital barometer and the International Standard Atmosphere （ISA） model, the paper analyzes the main causes of principle error, environmental error and sensor meas- urement error in the atmospheric pressure measurement of altitude, propose the model of improving pres- sure altitude and the error correction methods of reducing environment impacts and digital filtering.