Navigational Checking Using 3D Maps: The Influence of Elevation Angle, Azimuth, and Foreshortening

Abstract

Maps help navigators determine their position in the world. We define navigational checking as an aviator's task of continually comparing a map with the forward field of view (FFOV). We report two experiments using static three-dimensional (3D) images as the map and FFOV. Participants were asked to judge as quickly and accurately as possible whether the map and FFOV matched or mismatched. Elevation angle, azimuth angle, type of mismatch trial, and image complexity were manipulated; both response time and accuracy were recorded. Results were generally as predicted. Of greatest interest, we found a fairly linear performance decrement associated with the difference in foreshortening between the two views (a trigonometric conversion of elevation angle disparity), a somewhat nonlinear performance decrement associated with azimuth angle disparity, and no interaction between the two. Finally, we address how elevation and azimuth might influence 3D map display design.