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本文主要对日本静止卫星的低分辨率区域图的数字化处理问题,并介绍系统的组成和功能,其重点在阐述硬件接口和电路原理。一、系统结构日本GMS系列卫星低分辨率区域图的发送是采用AM—FM制,经过地面接收系统的处理后,变为2400Hz的调幅波,再送往118传真机,进行调黑、调白、检波、滤波、光电转换,将电压信号变为录影灯的光强变化,最后在感光纸上记下云图的照片。为了进行
This paper mainly deals with the problem of digital processing of low-resolution regional maps of Japanese geostationary satellites, and introduces the composition and function of the system. The emphasis is on the hardware interface and circuit principle. First, the system structure Japan’s GMS series of low-resolution satellite image transmission is the use of AM-FM system, after receiving the processing system of the ground, into a 2400Hz amplitude modulation wave, and then sent to 118 fax machines, to transfer black, white , Detection, filtering, photoelectric conversion, the voltage signal into a video light intensity changes, and finally recorded in the photographic paper cloud photos. To proceed