TY - GEN
T1 - The summary on atmospheric disturbance problems in the motion imaging of high resolution earth observation system
AU - Chen, Jingjing
AU - Guo, Hao
AU - Liu, Peiqing
AU - Wang, Yaping
PY - 2011
Y1 - 2011
N2 - High resolution earth observation system is a strategic high technology which uses aircrafts, such as planes and satellites, as observation platform to acquire the large scale, high precision and multi-layer spatial information with the employment of moving imaging loads. When an aircraft is flying, in addition to vibration caused by its own vibration source, it also encounters all sorts of atmospheric disturbances. The most typical disturbances are low-altitude wind shear and atmospheric turbulence. Low-altitude wind shear has serious impacts on take-off and approach landing of the aircraft. High resolution earth observation system usually works when the aircraft cruise, so we focus on the atmospheric turbulence. Atmospheric turbulence is continuous random fluctuation superimposed on the steady wind in the atmospheric environment. Aircraft flying in turbulent flow field will be bumping. Thus, the actual trajectory of the aircraft must depart from the ideal uniform linear motion state. From the perspective of imaging principle, the image quality of all the observation loads will be seriously degenerated by the motion of the flight platform at non-ideal conditions. This paper studies motion image quality (resolution, precision and signal-to-noise ratio) affected by atmospheric disturbance, summarizes and evaluates various existing methods generating atmospheric turbulence.
AB - High resolution earth observation system is a strategic high technology which uses aircrafts, such as planes and satellites, as observation platform to acquire the large scale, high precision and multi-layer spatial information with the employment of moving imaging loads. When an aircraft is flying, in addition to vibration caused by its own vibration source, it also encounters all sorts of atmospheric disturbances. The most typical disturbances are low-altitude wind shear and atmospheric turbulence. Low-altitude wind shear has serious impacts on take-off and approach landing of the aircraft. High resolution earth observation system usually works when the aircraft cruise, so we focus on the atmospheric turbulence. Atmospheric turbulence is continuous random fluctuation superimposed on the steady wind in the atmospheric environment. Aircraft flying in turbulent flow field will be bumping. Thus, the actual trajectory of the aircraft must depart from the ideal uniform linear motion state. From the perspective of imaging principle, the image quality of all the observation loads will be seriously degenerated by the motion of the flight platform at non-ideal conditions. This paper studies motion image quality (resolution, precision and signal-to-noise ratio) affected by atmospheric disturbance, summarizes and evaluates various existing methods generating atmospheric turbulence.
KW - Atmospheric turbulence
KW - Motion imaging
KW - Numerical simulation
KW - Turbulence model
UR - https://www.scopus.com/pages/publications/80053421276
U2 - 10.1109/EMEIT.2011.6023093
DO - 10.1109/EMEIT.2011.6023093
M3 - 会议稿件
AN - SCOPUS:80053421276
SN - 9781612840857
T3 - Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011
SP - 3999
EP - 4003
BT - Proceedings of 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011
T2 - 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011
Y2 - 12 August 2011 through 14 August 2011
ER -