title: [Algorithm for restoring spectrogram with sub-pixel resolution].
abstract: Insufficient spatial resolution of detectors is an obstacle to capturing spectra with high resolution. An effective solution is sub-pixel restoration, which can restore a high resolution spectrogram from sub-pixel shifted low resolution ones. In the present paper, an algorithm for sub-pixel restoration is suggested. It utilizes the bidirectional recursive relation between sub-pixel values and estimates each sub-pixel value from both directions of head-end and end-head. As a result, the averaged value will be accepted as the sub-pixel value. Numerical experiments on single gauss profile and superposition ones verified the effectiveness of the algorithm.
authors.affiliation: State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China. yanghd@tsinghua.edu.cn
authors.forename: Huai-Dong
authors.initials: HD
authors.lastname: Yang
authors.forename: Ke-Xin
authors.initials: KX
authors.lastname: Chen
authors.forename: Qing-Sheng
authors.initials: QS
authors.lastname: He
authors.forename: Guo-Fan
authors.initials: GF
authors.lastname: Jin