图说卫星应用技术(一)
“卫星应用技术”是指应用人造地球卫星进行通信、导航、遥感的技术,它如今已经成为国民经济、国防、教育、科研和日常生活领域都不可或缺的技术。卫星应用技术是多种科学技术交叉和渗透的产物,尽管已经过半个世纪的发展,大多数读者对它还会感到陌生,甚至觉得其高深莫测。卫星应用技术是从何时开始的?它的源头在哪里?我们在享受卫星导航便利的同时,对其基本原理有没有好奇?卫星应用技术如何会深刻影响我们的生活?影响我们的工业、农业和国防?当然,要完全弄清楚其中的理论基础和技术原理并非易事。我试着用一些简单的图片,扼要地介绍其精华部分,期望达到科普的目的。只要我的这种尝试比阅读文字更直白,就初步达到目的了。希望读者朋友们不吝批评指正,更希望朋友们提出宝贵的改进意见。
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