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本文介绍供地球资源卫星地面站的计算机图象处理系统所使用的滚筒式激光束图象记录仪的工作原理和主要技术指标,着重论述电子系统的总体设计,提供了在滚筒转速均匀性较差的情况下如何获得高精度图象的一种方案。文章中还探讨了影响图象灰度等级的因素及相应的改善措施。
This paper introduces the working principle and main technical specifications of the drum laser beam image recorder used by the computer image processing system of the earth resources satellite ground station. The emphasis is placed on the overall design of the electronic system, How to obtain high-resolution images in the case of a program. The paper also discusses the factors that affect the grayscale of images and the corresponding improvement measures.