Short recap of (our) current state-based displays. Conclusions from current work: Issues with current ASAS displays
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1 Outline Short recap of (our) current state-based displays Conclusions from current work: Issues with current ASAS displays Proposal for an experiment: Situation awareness with a co-planar display concept 1
2 Project focus ASAS based solely on automated resolution advisory leads to low situation awareness Keeps pilots from exploring other solutions Does not show cognition behind the automation May fail in unforeseen situations Development of ASAS systems requires a thorough analysis of how the new task of (self-) separation should be allocated between humans and automation. 2
3 State displays 3D traffic constraints Relative motion of ownship w.r.t. intruder: Aircraft are in conflict when the line extending from the relative velocity vector intersects with the intruder PZ 3D wedge shaped area provides the complete (instantaneous) constraints for relative velocity 3
4 State displays 3D traffic constraints Translate this area over to get the 3D traffic constraints on ownship velocity 4
5 State displays Display concepts X-ATP VSAD Current concept 5
6 Issues 4D characteristics of constraints State-based constraints are 3D (V, ψ, γ), and vary as a function of time 2 types of visualization: Perspective Co-planar Pro s Shows complete set of constraints (relatively) simple Provides `derivable shapes (e.g. triangles can be traced to intruder state and location) Con s Perspective distortion Complexity Shows only faces, can t provide inspection inside volume Doesn t show interactions between projection planes 6
7 Issues Supporting human <-> automation interaction State-based visualizations perform well in supporting `open solutions, while (with automation) `closed solutions are preferred State-based constraints are `condensed in the temporal dimension, while closed solutions are a succession of maneuvers at specific points in time How to add visual support for closed solutions? 7
8 Visually supporting closed solutions For a given velocity (magnitude), distance is a measure of time This property is applied in concepts like HIPS, or W. A. Bas graduation work at the NLR HIPS W. A. Bas 8
9 Visually supporting closed solutions 9
10 Visually supporting closed solutions For a given velocity (magnitude), distance is a measure of time This property is applied in concepts like HIPS, or W. A. Bas graduation work at the NLR These `no-go zones are only valid for one state dimension (e.g. speed vs. time, heading vs. time, or climb angle vs. time) Is visualization of the complete `no-go zone beneficial? (see e.g. Pieter s method, 2nd demo from earlier this morning) 10
11 Upcoming Experiment Situation awareness experiment, based on a co-planar interface concept (based on X-ATP + VSAD) Focus on visualizing links between the two planar projections Provide a certain combination of state-based constraints, and a visual relation to the closed solution 11
12 Timetable Research Co-planar display (next concept) now end 2010 Lit. research (measuring) traffic SA 3 rd q st q 2011 Experiments Co-planar display evaluation (@NLR, GRACE) end 2010 Multi-actor experiment (student graduation project) mid 2010 Publications Evalation co-planar 1 st q 2011 Multi-actor experiment 2 nd q
13 Discussion points Linking co-planar projections Will realistic resolutions ever combine horizontal and vertical maneuvers in a solution (would automation suggest such a maneuver)? Visualization of closed solutions what kind of information beyond the initial resolution should be visualized? 14
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