摘要
测绘相机的影像质量会影响卫星遥感的立体定位精度,与影像质量密切相关的关键因素主要有调制传递函数、信噪比和量化位数。以"天绘一号"卫星影像为背景,研究无地面控制条件下成像质量对定位精度的影响并评估影像质量与立体定位精度之间的定量关系。通过在轨仿真三种因素的降质数据,验证了实验的有效性。
The image quality of the surveying camera will affect the stereoscopic positioning accuracy of the satellite remote sensing.The key factors closely related to the image quality are modulation transfer function,signal to noise ratio and quantization bits.Taking Mapping Satellite-1 image as the background,we research the effect of positioning precision about the image quality in no ground controlled conditions,and evaluate the quantitative relationship between the image quality and the stereoscopic position accuracy.At last,the validity of the experimental results is verified by simulating three factors of degradation data in orbit.
作者
王一
胡莘
杨夏芳
Wang Yi;Hu Xin;Yang Xiafang(College of Geological Engineering and Surveying and Mapping,Chang＇an University,Xi＇an,Shaanxi 710054,China;Xi＇an Institute of Surveying and Mapping,Xi＇an,Shaanxi 710054,China;Xi＇an Zhong Ke Xing Tu Space Date Technology Co.,Ltd.,Xi＇an,Shaanxi 710100,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第8期285-291,共7页
Laser & Optoelectronics Progress
基金
国家自然科学基金(4157012140)
关键词
成像系统
定位精度
调制传递函数
信噪比
量化位数
降质数据
imaging systems
positioning accuracy
modulation transfer function
signal to noise ratio
quantizationbits
degradation data
