On-Orbit Signal-to-Noise Ratio Test Method for Night-Light Camera in Luojia 1-01 Satellite Based on Time-Sequence Imagery
文献类型：期刊论文
| 作者 | W.Wang; X.Zhong; Z.Q.Su |
| 刊名 | Sensors
 |
| 出版日期 | 2019 |
| 卷号 | 19期号:19页码:18 |
| 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 |
| DOI | 10.3390/s19194077 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| 源URL | [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. |
入库方式： OAI收割
浏览0
下载0
收藏0
其他版本
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。