CAJ | 학술논문

漂移扫描技术虽然工作高效,但其观测模式会对成像效果造成不可避免的散焦.本文旨在通过构造模型来定量分析其散焦量,为星像质量的评估和改善提供理论参考.本文首先通过分析漂移扫描的工作机理及空间投影成像原理,建立了相应的目标星像散焦模型,并在此基础上,分别对因电荷移动速度和星像移动速度失配引起的非同步性散焦,以及空间目标曲线运动形成的轨迹投影散焦进行了定量分析.最后通过仿真实验,验证了模型的有效性,并讨论了其适用性.
표이소묘기술수연공작고효,단기관측모식회대성상효과조성불가피면적산초.본문지재통과구조모형래정량분석기산초량,위성상질량적평고화개선제공이론삼고.본문수선통과분석표이소묘적공작궤리급공간투영성상원리,건립료상응적목표성상산초모형,병재차기출상,분별대인전하이동속도화성상이동속도실배인기적비동보성산초,이급공간목표곡선운동형성적궤적투영산초진행료정량분석.최후통과방진실험,험증료모형적유효성,병토론료기괄용성.
The technique of drift-scanning is efficient in working, but the observation of drift-scanning mode would defocus the imaging energy inevitably. The models for analyzing the value of the defocus quantificationally was built, which provides the theoretical reference for the evaluation and improvement on the image quality of spatial targets. Firstly, the principles of both drift-scanning and spatial projection imaging were analyzed. Then, the relevant spread models of targets' energy were set up, which were used to give a quantifieational analysis individually on the defocus of non-synchronization caused by the eharge's mismatch with star image in the moving velocity, and the defocus of track-projection brought by the spatial targets' curve movement. Finally, a simulated experiment was made to validate the feasibility of the relevant defocus models, whose applicability were also discussed.