The airborne enhanced synthetic vision system generates a virtual scene that reflects a real scene by comprehensively utilizing multiple types of data. The commonly used data includes sensor imaging data, obstacle data, navigation and attitude data, scene database data, and two-dimensional and three-dimensional symbol data. Only if these data are effectively integrated and displayed, can the entire system be made effective and reliable. The fusion display processing in this article is based on the OpenGL rendering pipeline. The highlights include the data types and processing ideas involved in the enhanced synthetic vision system, the processing methods of some common symbols, and the processing flow for superimposing sensor images and database data.
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