摘要
非对称空间外差光谱技术是一种新型的超高分辨率遥感探测技术,基于其光通量大、体积小、精度高的特点,适用于深空环境下的高精度探测工作.也正因其高灵敏度的特性,使得实验中的各种细节因素都可能对测量结果造成干扰.本文从实验条件的角度,重点考虑条纹中心位置偏移、光照不均匀、高斯噪声等因素的影响,提出了复合光程差相移解算方法.经仿真计算和数据分析得出,相位标称点相对中心位置的偏移量会显著影响光谱测速的系统误差,而复合光程差相移解算方法能够在一定程度上平滑环境噪声和随机干扰造成的光谱测速精度误差.对于1%程度的高斯噪声干涉条纹图像,采用复合光程差相移解算方法能够将测速误差控制在5‰以内,使得非对称空间外差光谱技术能够更好地适用于空间光电精密测量的相关应用中.
Asymmetric spatial heterodyne spectroscopy is a new ultra-high resolution remote sensing detection technology.Based on its features of large luminous flux,small size,and high precision,it is very suitable for high-precision detection in a deep-space environment.Because of its high sensitivity,various details may interfere with the measurement results in experiment.In this paper,from the perspective of experimental condition,considering the influences of factors such as fringe center position offset,uneven illumination,and Gaussian noise,a compound optical path difference phase-shift solution method is proposed.The simulation calculation and data analysis show that the offset of the nominal point relative to the center position will significantly affect the systematic error of spectral velocity measurement.And the compound optical path difference phase-shift solution method can smooth the environmental noise and random interference to a certain extent.For the interference fringe image with 1%Gaussian noise,the velocity measurement error can be controlled within 5‰by using the compound optical path difference phase-shift solution method,which makes the asymmetric spatial heterodyne spectroscopy technology more suitable for space optoelectronic precision measurement.
作者
彭翔
刘恩海
田书林
方亮
Peng Xiang;Liu En-Hai;Tian Shu-Lin;Fang Liang(Key laboratory of Science and Technology on Space Optoelectronic Precision Measurement,Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China;Automation Engineering Academy,University of Electronic Science and Technology of China,Chengdu 611731,China;School of Optoelectronics,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第24期105-112,共8页
Acta Physica Sinica
基金
国家重点基础研究发展计划(批准号:2014CB744204)资助的课题。
关键词
多普勒非对称空间外差光谱测速
深空探测
复合光程差相移解算
标称点偏离
Doppler asymmetric spatial heterodyne spectral velocimetry
deep space exploration
compound optical path difference phase-shift solution method
nominal point deviation
