低空摄影测量飞机惯导姿态精度评估技术  

Attitude accuracy assessment technique of aircraft inertial navigation system based on low-altitude photogrammetry

作　　者：胡丙华[1] 张虎龙[1] 张杰[1] HU Binghua;ZHANG Hulong;ZHANG Jie(Chinese Flight Test Establishment,Xi’an 710089,China)

机构地区：[1]中国飞行试验研究院

出　　处：《中国测试》2019年第5期145-150,共6页China Measurement & Test

摘　　要：针对试飞试验中飞机惯导系统的姿态数据精度评估问题,从航空摄影测量控制定位理论出发,基于 POS 辅助空中三角测量和光束法区域网平差理论与方法,充分利用各种传感器特性和地面控制条件,实现摄影瞬间飞机惯导系统姿态参数的高精度测量,并与飞机惯导系统实际获取的姿态数据进行残差计算和精度对比分析,进而实现对飞机惯导系统姿态数据精度的评估。飞行试验证明:利用低空摄影测量的密集控制网光束法区域平差方法,能够获取精度高于惯导数据一个等级以上的姿态数据,可充分实现对惯导数据精度的合理评估。In order to evaluate the accuracy of attitude data of aircraft inertial navigation system in flight test, starting from aerial photography measurement and control positioning theory, with POS-based aerial triangulation and bundle block adjustment method, the characteristics of various sensors and ground control conditions are fully utilized to realize the high-precision measurement of attitude of aircraft at the moment of photography, which compared with the attitude data actually acquired by the aircraft inertial navigation system for residual error calculation and accuracy analysis, and then the aircraft inertial navigation system attitude data accuracy evaluation is realized. The flight test proves that the low-altitude aerial photogrammetry with bundle block adjustment method based on the intensive control network can obtain attitude data with a higher level accuracy than the inertial navigation data, which can fully realize the reasonable evaluation of the inertial navigation data accuracy.

关 键 词：试飞试验 惯导系统 姿态精度评估 POS 辅助空中三角测量 光束法区域网平差 

分 类 号：V217.31[航空宇航科学与技术—航空宇航推进理论与工程]