摘要
针对高程测量精度较低的问题,将气压传感器引入高程测量系统,采用线性回归方法对高程与气压函数关系进行分段线性化,简化了非线性运算在微处理器中的实现,并对实际海平面与标准海平面气压、温度不一致造成的高程误差进行分析和补偿,实现了高程的精确估计。初步实验结果表明,该系统能够实时获取高程变化信息,并具有较高的测量精度。
As to the issue of low precision in altitude measurement system,the scheme of altitude measuring system with barometer is presented,and a linear approach based on small regions is applied to simplify the nonlinear relationship between height and pressure.The altitude is precisely estimated by analyzing and complementing the differences between the actual pressure as well as temperature and the standard conditions.The experimental results show that the system can acquire the altitude information in real time and with sufficient precisions.
出处
《测控技术》
CSCD
北大核心
2010年第12期12-14,21,共4页
Measurement & Control Technology
关键词
高程测量
气压传感器
气压补偿
温度补偿
线性回归
altitude measurement
pressure sensor
pressure compensation
temperature compensation
linear regression
