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在静止气象卫星系统中,从可见光与红外自旋一扫描辐射计(V1SSR)获得的原始数据首先要进行同步和缓冲,才能送向数据处理中心(DPC)。同步是为了恢复出象点有准确位置的好的图象,并可用来准确测量风速(一项重要的应用);而缓冲是为了数据传输和输入计算机的方便。从正确使用数据的观点看,同步和缓冲是系统中不可缺少的技术。本文介绍Meteosat和GMS两个气象卫星系统中被成功地应用着的同步和缓冲系统(S/DB),并对它们的性能和精度进行了分析。
In a stationary meteorological satellite system, the raw data obtained from the Visible and Infrared Spin-Scan Radios (V1SSR) are first synchronized and buffered to be sent to the Data Processing Center (DPC). Synchronization is to recover a good image of the exact position of the image point and to accurately measure the wind speed (an important application); buffering is for the convenience of data transfer and computer input. From the point of view of proper use of data, synchronization and buffering are indispensable techniques in the system. This article introduces the Synchronous and Buffer Systems (S / DB) that have been successfully used in both Meteosat and GMS meteorological satellite systems and analyzed their performance and accuracy.