摘要
像移补偿技术是高分辨力空间相机的关键技术。由于偏流角的存在 ,使得像移速度在像面坐标系存在两个分量 :前向像移速度和横向像移速度 ,偏流角控制本质上是消除横向像移速度 ,因此 ,偏流角控制是空间相机像移补偿的一部分。不同类型的空间相机有不同的像移补偿措施 ,也就有不同的偏流角控制方法 ,本文对像移补偿方法中的偏流角控制及作用进行分析 。
Image motion compensation(IMC) is the key technology of a high-resolution space camera. Image motion speed is seperated into two vectors in the image coordinate for existence of the drift angle:the forward direction image motion speed and the crosswise image motion speed.In fact,drift angle control eliminates the crosswise image motion speed,so it is a part of image motion compensation. Different kind space cameras use different image motion compensation methods and drift angle controls, respectively. The applications of drift angle control in the mechanical image motion compensation and electronic image motion compensation are introduced and analyzed in this paper.The drift angle control method in a TDICCD image tansfer space camera is emphasized.
出处
《光学精密工程》
EI
CAS
CSCD
2002年第4期402-406,共5页
Optics and Precision Engineering
关键词
空间相机
像移补偿
偏流角控制
space cameras
image motion compensation
drift angle control
