Real-time positioning in logging: Effects of forest stand characteristics, topography, and line-of-sight obstructions on GNSS-RF transponder accuracy and radio signal propagation.

by Eloise G Zimbelman, Robert F Keefe
Published 2018-01-01

Development and validation of smartwatch-based activity recognition models for rigging crew workers on cable logging operations.

by Eloise G Zimbelman, Robert F Keefe
Published 2021-01-01

Positioning Methods and the Use of Location and Activity Data in Forests

by Robert F. Keefe, Ann M. Wempe, Ryer M. Becker, Eloise G. Zimbelman, Emily S. Nagler, Sophie L. Gilbert, Christopher C. Caudill
Published 2019-05-01

Accuracy of WAAS-Enabled GPS-RF Warning Signals When Crossing a Terrestrial Geofence

by Lindsay M. Grayson, Robert F. Keefe, Wade T. Tinkham, Jan U. H. Eitel, Jarred D. Saralecos, Alistair M. S. Smith, Eloise G. Zimbelman
Published 2016-06-01