NSSC OpenIR  > 空间技术部
场景采样率与推扫方向对亚像元线目标仿真的影响
Alternative TitleEffects of synthetic scene sampling-rate and scanning direction on subpixel line target simulations
李毓伦; 杨震; 马晓珊; 李海涛
Department空间技术部
Source Publication红外与激光工程
2019
Volume48Issue:9
DOI10.3788/IRLA201948.0926001
ISSN1007-2276
Language中文
Keyword星载光学遥感 图像生成 线目标 Hough变换 数据框架
Abstract

为准确模拟星载光学遥感图像中的亚像素线目标,分析了场景采样率、传感器推扫方向对仿真结果的影响。针对两种因素进行理论分析、仿真试验,推导星地点坐标对应关系,使用Hough变换描述线目标的显著程度和空间分布,利用数据框架分析结果。结论表明:当推扫方向与线目标夹角在0°、90°附近变化时,混叠误差明显增大导致线的显著度下降、伪线数增加;夹角在45°附近仍存在混叠,但结果相比更具鲁棒性;采样率增加可以一定范围内提升线的显著度,但不能改变降质模糊引起的空间分布误差。结果可用于仿真置信度评估,并为模型设计提供参考。

Other Abstract

The influence of ground scene sampling-rate and sensor scanning direction has been examined to accurately simulate the sub-pixel line target in synthetic spectral imagery. Both theoretical analysis and simulation experiments were proposed. The geometric relation between the pixels of the satellite detector and the ground scene was inferred. Hough line transform was adopted to describe the radiometric property and spatial distributions of the simulated line target. Results were analyzed with the DataFrame. It is concluded that the aliasing error increases notably with the angle between the scanning direction and line varying in the range near 0°, 90°. The line becomes less significant and fake lines appear. The similar phenomenon exists in the angle range near 45°. However, the aliasing effect is relatively mild, thus providing robustness to the simulation. To a certain extent, sampling with a more intensive rate improves the line's significance, but cannot eliminate the blur-introduced errors of spatial location. These results can be used to evaluate the simulation fidelity, and design appropriate models. © 2019, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

Indexed ByEI ; CSCD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7238
Collection空间技术部
Recommended Citation
GB/T 7714
李毓伦,杨震,马晓珊,等. 场景采样率与推扫方向对亚像元线目标仿真的影响[J]. 红外与激光工程,2019,48(9).
APA 李毓伦,杨震,马晓珊,&李海涛.(2019).场景采样率与推扫方向对亚像元线目标仿真的影响.红外与激光工程,48(9).
MLA 李毓伦,et al."场景采样率与推扫方向对亚像元线目标仿真的影响".红外与激光工程 48.9(2019).
Files in This Item:
File Name/Size DocType Version Access License
2019489001.pdf(2288KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[李毓伦]'s Articles
[杨震]'s Articles
[马晓珊]'s Articles
Baidu academic
Similar articles in Baidu academic
[李毓伦]'s Articles
[杨震]'s Articles
[马晓珊]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[李毓伦]'s Articles
[杨震]'s Articles
[马晓珊]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.