一种基于虚拟目标的飞行器姿态测量方法  

A Pose Measurement Method of Flying Object Based on Virtual Target

作　　者：王成刚[1] 李思奇[1] WANG Chenggang;LI Siqi(Southwest China Institute of Electronic Technology, Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2017年第11期1251-1254,共4页Telecommunication Engineering

摘　　要：提出了一种使用虚拟目标代替真实目标对姿态测量系统进行测试和评估的方法,同时给出了由光学成像设备跟踪状态和目标飞行状态计算目标在光学成像设备像面上成像中轴线斜率和截距的算法。根据姿态测量系统的特点,仿真出大量具有针对性的理论数据和图像,并使用其对姿态测量系统中的图像判读精度和姿态交会算法分别进行了测试和评估。实验结果表明,当虚拟目标长度在80 pixel时,提取精度可达0.1°;而当虚拟目标长度在6 pixel时,提取精度仅为5.7°;姿态交会算法对判读误差具有一定放大作用;图像判读误差是姿态测量中的主要误差源。This paper proposes a method for testing and evaluating pose measurement system based on virtual target instead of real target.On the basis of tracking state of theodolite and flying state of target,an algorithm is given to calculate the slope value and intercept value of the target image's centerline on image plane of theodolite.Guided by character of pose measurement system,a great deal of theoretical data and images has been simulated to test the image interpretation algorithm and pose rendezvous algorithm.Shown by experiment result,the precision of the image interpretation system can reach0.1degree when the virtual target is as long as80pixels,but the precision is only5.7degree when the virtual target's length is6pixels.Although the pose rendezvous algorithm would enlarge the interpretation error,the image interpretation error is the main error source of the pose measurement.

关 键 词：姿态测量 虚拟目标 算法评估 图像判读 姿态交会 

分 类 号：V249.122[航空宇航科学与技术—飞行器设计] TP391.9[自动化与计算机技术—计算机应用技术]