Visual Search and Image Quality.
Final Technical rept. 15 Jun 71-14 Oct 75,
VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF INDUSTRIAL ENGINEERING AND OPERATIONS RESEARCH
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This report presents the results of an air-to-ground television target acquisition experiment which investigated the effects of mission profile, video system line rate and bandwidth, and video noise level. The target acquisition performance data are related to these variables and to a measure of display image quality, the Modulation Transfer Function Area MTFA, which is measured microphotometrically at the display surface. The target acquisition performance results are largely as expected. For a camera field of view of 18.8 x 14.2 deg, the mean ground ranges of correctly acquired targets are 28,661, 24,376, and 12,171 ft, respectively, for mission profiles of 23 deg depression angle, 500 fts velocity 23 deg, 3000 fts and 45 deg, 500 fts. As depression angle decreased, there was a large decrease in acquisition range as velocity increased, there was a smaller decrease in acquisition range. Altitude was 10,000 ft.
- Optical Detection and Detectors