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Field-Based Validation of a Tactile Navigation Device.

Linda R Elliott, Jan B F van Erp, Elizabeth S Redden

IEEE Transactions on Haptics

|January 1, 2010

Summary

Tactile GPS systems offer a viable alternative for land navigation in challenging outdoor environments. These systems can outperform visual displays, especially when cognitive and visual demands are high.

Area of Science:

Human-Computer Interaction
Navigation Systems
Military Technology

Background:

Traditional land navigation relies on visual cues and devices, which can be challenging under high workload conditions.
Existing GPS devices require visual attention, potentially hindering situational awareness in complex environments.
The US Army trains soldiers in land navigation using map and compass, handheld GPS, and other visual aids.

Purpose of the Study:

To evaluate the effectiveness of a tactile land navigation system in field-based scenarios.
To compare the performance of the tactile GPS system against traditional and visual GPS devices.
To assess the system's usability under strenuous outdoor conditions and high cognitive/visual workload.

Main Methods:

Three field experiments were conducted in rugged, wooded terrain simulating US Army land navigation training.

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Participants used map and compass, standard GPS, head-mounted GPS, commercial GPS arrow displays, and the tactile GPS system.

Tasks included navigating waypoints, responding to radio requests, and searching for targets during day and night operations.

Main Results:

The tactile GPS system proved effective for navigation in strenuous outdoor environments.
Performance comparisons indicated the tactile system could outperform visual displays under high workload conditions.
Field evaluations demonstrated the system's potential in challenging scenarios, including night operations and target searching.

Conclusions:

Tactile navigation displays are suitable for demanding outdoor use.
The tactile GPS system offers advantages over visual displays when cognitive and visual loads are significant.
This technology has the potential to enhance land navigation capabilities in military and other operational contexts.