摘要
地基大视场天文光电观测系统获取的序列图像中,空间目标和数目众多的恒星目标成像特性相似,大部分都表现为弱、小目标特性,需根据二者特征之间的微小差异实现目标的正确可靠识别。首先分别从空域和时域的角度出发,将目标的成像特征分为静态特征和动态特征,并提出了相应的特征计算方法。然后结合实测数据,根据目标的特征提取结果深入分析了空间目标和恒星目标的成像特征,并详细比较了两者的成像特征差异。空间目标和恒星目标的成像特征提取和分析,为空间目标虚警的消除提供了大量的判决依据,有助于空间目标的低虚警率检测识别。
In the image sequences obtained by astronomical opto-electronic observation system with large field of view on terrestrial surface,the image characteristics of space targets and large amount of stars are similar.Most targets appear weak and small.The valid reliable recognition of targets must be based on the tiny difference of features between them.Firstly,according to the view of space domain and time domain,the imaging features of targets are classified as static features and dynamic features,and the methods of calculating corresponding feature values are proposed in detail.Then combined with large quantity of real-measured data,the imaging features of space targets and stars are deeply analyzed with the feature-extraction result,especially the contrast of features between them are particularly described.The imaging feature extraction and analysis of space targets and stars provide many decision proofs to eliminate false space targets,and they help to realize the detection and recognition of space targets with very low false alarm rate.
出处
《光电工程》
CAS
CSCD
北大核心
2011年第4期59-65,共7页
Opto-Electronic Engineering
基金
国家863项目资助(2009AA7034060
2010AA8080201)
关键词
空间目标
特征提取
弱小目标检测
质心计算
space target
feature extraction
weak small target detection
centroid calculation
