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以前,地球摄象系统包括非常复杂的照象机构和光电转换技术。而且,数字传输的制式由于需要十分复杂且昂贵的接收和显示设备从而限制了它们在教育机构中的广泛应用。本文叙述了用一个两维的CCD阵列研制的一种简单的摄象机。设计考虑必须减少功耗、重量和尺寸,用以收集数据的制式能用很简单的设备接收并显示在民用电视接收机上。该摄象机的分辨率是256×256个象素,灰度应为16级,对地的覆盖面积大约为480平方公里。
In the past, the Earth’s camera system consisted of a very complex camera and photoelectric conversion technology. Moreover, the format of digital transmission limits their widespread use in educational establishments due to the need for sophisticated and expensive receiving and display devices. This article describes a simple camera developed with a two-dimensional CCD array. Design Considerations There is a need to reduce power consumption, weight and size, and the format used to collect data can be received and displayed on civilian television receivers using very simple equipment. The resolution of the camera is 256 × 256 pixels, the grayscale should be 16, to the ground cover an area of about 480 square kilometers.