{"title":"Optical variables and control strategy used in a visual hover task","authors":"W. Johnson, A. Phatak","doi":"10.1109/ICSMC.1989.71388","DOIUrl":null,"url":null,"abstract":"Determinants of performance in a simulated hover task are examined. This task uses an extremely simplified vehicle model with only three degrees of freedom: longitudinal (fore/aft), lateral (left/right), and vertical (up/down). No rotational motions are simulated. Only one control manipulation is allowed, namely control of vertical craft velocity. The task uses a fixed base simulator with three adjacent windows each spanning a 40 degrees visual field. Subjects view computer-generated scenes of either (1) a randomly textured and colored background plane 2000 ft below; (2) a regularly patterned see-through grid plane 1000 ft below; or (3) both the grid and the ground. Results show that vertical optical motion is a primary source of information for altitude control even with a forward buffeting disturbance. This is confirmed by the fact that the addition of peripheral visual cues does not improve performance.<<ETX>>","PeriodicalId":72691,"journal":{"name":"Conference proceedings. IEEE International Conference on Systems, Man, and Cybernetics","volume":"43 1","pages":"719-724 vol.2"},"PeriodicalIF":0.0000,"publicationDate":"1989-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"18","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference proceedings. IEEE International Conference on Systems, Man, and Cybernetics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSMC.1989.71388","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 18
Abstract
Determinants of performance in a simulated hover task are examined. This task uses an extremely simplified vehicle model with only three degrees of freedom: longitudinal (fore/aft), lateral (left/right), and vertical (up/down). No rotational motions are simulated. Only one control manipulation is allowed, namely control of vertical craft velocity. The task uses a fixed base simulator with three adjacent windows each spanning a 40 degrees visual field. Subjects view computer-generated scenes of either (1) a randomly textured and colored background plane 2000 ft below; (2) a regularly patterned see-through grid plane 1000 ft below; or (3) both the grid and the ground. Results show that vertical optical motion is a primary source of information for altitude control even with a forward buffeting disturbance. This is confirmed by the fact that the addition of peripheral visual cues does not improve performance.<>