Design verification by emulation

Virtually all airlines use currently calligraphic computer-generated images (CGI) to train their pilots. CGI systems have, however, two limitations, which are related to an inability to generate sufficient detail, and to quantization effects in the digital computational process. Investigations have been conducted with the objective to minimize the effect of image quality deficiencies on the training value. The only way to evaluate necessary compromises is to compare several different approaches. A laboratory was established with the capability to generate in nonreal time images which are stored on a video disk. The images can be played back to portray a moving scene. The laboratory is described, taking into account a visual system emulator, radar emulation, and the use of the laboratory to determine image quality. It is pointed out that the testing of suitable approaches in real-time hardware would cost about 30 times as much as the expenditures involved in the employment of the adopted emulation procedure.