中国空间科学技术2017，Vol.37Issue(5)：47-53,7.DOI:10.16708/j.cnki.1000-758X.2017.0075
霍尔推力器在轨羽流图像诊断方法
A method of image diagnosis for in-orbit Hall thruster plume
摘要
Abstract
An image diagnosis method based on the spectrum diagnosis was proposed to facilitate the in-orbit diagnosis measurement of Hall thruster plume . Firstly , the RGB data reflecting the spectral radiation intensity of different wavelength range was extracted from the plume image photographed by the camera . Based on the analysis of the camera imaging principle , the correspondence between the image gray value and spectral intensity was deduced . Then the plume image diagnosis model was established combined with the spectral collision radiation model . The experimental results show that the distribution of the electron temperature and ion density in the plume region calculated by the image diagnosis method is in agreement with the results of the probe measurement . The relative uncertainty of the calculated results is about 20% and 15% . It is further proved that the diagnosis method , which has moderate precision and high reliability , is suitable for the in-orbit diagnosis measurement of Hall thruster plume parameters .关键词
霍尔推力器/羽流/图像诊断/光谱辐射强度/灰度Key words
Hall thruster/plume/image diagnosis/spectral radiation intensity/gray value分类
航空航天引用本文复制引用
胡俊锋,杨鑫勇,仲小清,黄涛,魏立秋,于达仁..霍尔推力器在轨羽流图像诊断方法[J].中国空间科学技术,2017,37(5):47-53,7.基金项目
国家科学自然基金 (51477035 ) （51477035 ）
