基于GPS-惯性数据的激光大气数据系统标定方法
Calibration method for optical air data system based on GPS-inertial integrated navigation data
李彬 1雷宏杰 1岳亚洲 1周原 2田哲铭 2乔金良2
作者信息
- 1. 中国航空工业集团公司西安飞行自动控制研究所,西安 710065;飞行器控制一体化技术国防科技重点实验室,西安 710065
- 2. 中国航空工业集团公司西安飞行自动控制研究所,西安 710065
- 折叠
摘要
激光大气数据系统由于系统测量精度较高以及测量区域范围较大,目前尚无有效的高精度标定手段.针对这一问题,提出一种直线折返测速法,可以消除大气中风速的影响,将消除风速影响后的空速数据与 GPS-惯性组合导航系统测量的地速数据进行对比分析,以评价激光大气数据系统真空速测量性能.分析了所提方法的各类测量误差以及理论极限精度.飞行实验结果表明,所提方法测量精度优于0.5 m/s,接近理论误差极限,可以用来标定激光大气数据系统,为激光大气数据系统标定技术的发展和应用提供参考.
Abstract
There is no effective high-precision calibration method for the optical air data system(OADS)due to its high measurement accuracy and the large measurement area range.To solve this problem,a straight-round-trip velocity measurement method is proposed,which can eliminate the influence of wind speed.The true airspeed after removing the wind speed influence are compared with the ground velocity measured by GPS-Inertial integrated navigation system(INS),so as to evaluate the true airspeed measurement performance of OADS.The measurement errors and theoretical limit precision of the proposed method are analyzed.The flight experimental results show that the measurement accuracy of the proposed method is better than 0.5 m/s,approaching the theoretical error limit,and can be used to calibrate the OADS.The research results can provide useful reference in the development and application of calibration technology for OADS.
关键词
激光大气数据系统/空速/组合导航/系统标定Key words
optical air data system/airspeed/integrated navigation/system calibration引用本文复制引用
基金项目
国防科技重点实验室项目(WDZC2022601A103)
出版年
2024
NETL
NSTL
万方数据