舰船电子工程Issue(11)：45-48,4.DOI:10.3969/j.issn.1672-9730.2015.11.013
基于多步长最大信息熵的空间目标质心定位
Centroid Location for Space Targets Based on Multi-step Information Entropy Energy Difference Method
郭晓军 1徐健 2马新星 2刘峰3
作者信息
- 1. 海军航空工程学院控制工程系 烟台 264001
- 2. 海军航空工程学院研究生管理大队 烟台 264001
- 3. 海军航空工程学院接改装大队 烟台 264001
- 折叠
摘要
Abstract
The centroid accuracy of star tracker is the base of other accuracies .It's the base of celestial navigation ,star map identification ,orbit positioning and so on ,which is required to reach arc second scale .This paper analyses the main fac‐tors affecting the positioning accuracy of target centroid and the method for star target centroids based on multi‐step maxi‐mum information entropy is proposed .This method uses the linear superposition to narrow the centroid area ,using the sym‐metry of the stellar energy distribution to get the difference at centroid position and obtain the centroid ,then the validation comparison of simulated star images .Experiments show that the positioning accuracy of the method up to 0 .01 pixel ,has good effect to calculate the centroid of low SNR conditions .关键词
多步长/信息熵/亚像素/质心定位Key words
multi-step/information entropy/sub-pixel/centroid calculation分类
信息技术与安全科学引用本文复制引用
郭晓军,徐健,马新星,刘峰..基于多步长最大信息熵的空间目标质心定位[J].舰船电子工程,2015,(11):45-48,4.
