CIOMP OpenIR
On-Orbit Signal-to-Noise Ratio Test Method for Night-Light Camera in Luojia 1-01 Satellite Based on Time-Sequence Imagery
W.Wang; X.Zhong; Z.Q.Su
2019
发表期刊Sensors
卷号19期号:19页码:18
摘要Night-light remote sensing imaging technologies have increasingly attracted attention with the development and application of focal plane arrays. On-orbit signal-to-noise ratio (SNR) test is an important link to evaluate night-light camera's radiometric performance and the premise for quantitative application of remote sensing imageries. Under night-light illumination conditions, the illuminance of ground objects is very low and varies dramatically, the spatial uniformity of each pixel's output cannot be guaranteed, and thus the traditional on-orbit test methods represented by variance method are unsuitable for low-resolution night-light cameras. To solve this problem, we proposed an effective on-orbit SNR test method based on consecutive time-sequence images that including the same objects. We analyzed the radiative transfer process between night-light camera and objects, and established a theoretical SNR model based on analysis of the generation and main sources of signal electrons and noise electrons. Finally, we took Luojia 1-01 satellite, the world's first professional night-light remote sensing satellite, as reference and calculated the theoretical SNR and actual on-orbit SNR using consecutive images captured by Luojia 1-01 satellite. The actual results show the similar characteristics as theoretical results, and are higher than the theoretical results within the reasonable error tolerance, which fully guarantee the detection ability of night-light camera and verify the validity of this time-sequence-based method.
关键词SNR,night-light,time-sequence imagery,Luojia 1-01 satellite,low-resolution,on-orbit test,radiometric calibration,urbanization,dynamics,china,scales,Chemistry,Engineering,Instruments & Instrumentation
DOI10.3390/s19194077
收录类别SCI ; EI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/62987
专题中国科学院长春光学精密机械与物理研究所
推荐引用方式
GB/T 7714
W.Wang,X.Zhong,Z.Q.Su. On-Orbit Signal-to-Noise Ratio Test Method for Night-Light Camera in Luojia 1-01 Satellite Based on Time-Sequence Imagery[J]. Sensors,2019,19(19):18.
APA W.Wang,X.Zhong,&Z.Q.Su.(2019).On-Orbit Signal-to-Noise Ratio Test Method for Night-Light Camera in Luojia 1-01 Satellite Based on Time-Sequence Imagery.Sensors,19(19),18.
MLA W.Wang,et al."On-Orbit Signal-to-Noise Ratio Test Method for Night-Light Camera in Luojia 1-01 Satellite Based on Time-Sequence Imagery".Sensors 19.19(2019):18.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
On Orbit Signal to N(4001KB)期刊论文出版稿开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[W.Wang]的文章
[X.Zhong]的文章
[Z.Q.Su]的文章
百度学术
百度学术中相似的文章
[W.Wang]的文章
[X.Zhong]的文章
[Z.Q.Su]的文章
必应学术
必应学术中相似的文章
[W.Wang]的文章
[X.Zhong]的文章
[Z.Q.Su]的文章
相关权益政策
暂无数据
收藏/分享
文件名: On Orbit Signal to Noise Ratio Test Method for.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。