Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8989652 | Advanced timing and time transfer for satellite constellations using crosslink ranging and an accurate time source | David A. Whelan, Peter M. Fyfe | 2015-03-24 |
| 8977843 | Geolocating network nodes in attenuated environments for cyber and network security applications | Arun Ayyagari, David A. Whelan, David G. Lawrence | 2015-03-10 |
| 8949941 | Geothentication based on network ranging | David A. Whelan, David G. Lawrence, Michael L. O'Connor, Rachel Rane' Schmalzried | 2015-02-03 |
| 8910246 | Contextual-based virtual data boundaries | David A. Whelan, David G. Lawrence, Michael L. O'Connor, Arun Ayyagari, Rachel Rané Schmalzried | 2014-12-09 |
| 8849565 | Navigation system based on neutrino detection | — | 2014-09-30 |
| 8843313 | Multipath isolation through the combined use of antenna diversity and frequency diversity | Per K. Enge, Bart Ferrell, James C. Lassa, Michael A. Rizzo, David A. Whelan | 2014-09-23 |
| 8837728 | Server algorithms to improve space based authentication | Per K. Enge, David G. Lawrence, Michael L. O'Connor, Michael Eglington, David A. Whelan | 2014-09-16 |
| 8811614 | Space based authentication utilizing signals from low and medium earth orbit | Per K. Enge, David A. Whelan, David G. Lawrence | 2014-08-19 |
| 8769267 | Geothentication based on new network packet structure | Arun Ayyagari, David A. Whelan, Michael L. O'Connor, David G. Lawrence | 2014-07-01 |
| 8584205 | Guard spot beams to deter satellite-based authentication system spoofing | David G. Lawrence, David A. Whelan | 2013-11-12 |
| 8570216 | Differential correction system enhancement leverages roving receivers enabled for a non-GPS, secondary PN and T signal to characterize local errors | Arun Ayyagari, David A. Whelan, Michael L. O'Connor, David G. Lawrence | 2013-10-29 |
| 8542147 | Precise absolute time transfer from a satellite system | David A. Whelan | 2013-09-24 |
| 8416129 | Positioning determinations of receivers | Christopher J. Martens | 2013-04-09 |
| 8296051 | Generalized high performance navigation system | Clark E. Cohen, David A. Whelan, Robert W. Brumley, Barton G. Ferrell | 2012-10-23 |
| 8179312 | Precise absolute time transfer from a satellite system | Clark E. Cohen, David A. Whelan, Robert W. Brumley, Barton G. Ferrell | 2012-05-15 |
| 8035558 | Precise absolute time transfer from a satellite system | Clark E. Cohen, David A. Whelan, Robert W. Brumley, Barton G. Ferrell | 2011-10-11 |
| 7952518 | Internet hotspots localization using satellite systems | David A. Whelan, Robert W. Brumley, Barton G. Ferrell | 2011-05-31 |
| 7859455 | Local clock frequency calibration using low earth orbit (LEO) satellites | David A. Whelan, Barton G. Ferrell, Robert W. Brumley, Christopher J. Martens, Anne T. Haddad | 2010-12-28 |
| 7583225 | Low earth orbit satellite data uplink | Clark E. Cohen, David A. Whelan, Robert W. Brumley, Barton G. Ferrell | 2009-09-01 |
| 7579987 | Low earth orbit satellite providing navigation signals | Clark E. Cohen, David A. Whelan, Robert W. Brumley, Barton G. Ferrell | 2009-08-25 |
| 7554481 | Localized jamming of navigation signals | Clark E. Cohen, David A. Whelan, Robert W. Brumley, Barton G. Ferrell | 2009-06-30 |
| 7372400 | Methods and apparatus for a navigation system with reduced susceptibility to interference and jamming | Clark E. Cohen, Robert W. Brumley, Mark L. Psiaki, William J. Bencze, Brent M. Ledvina +2 more | 2008-05-13 |
| 7042392 | GPS access system and method | David A. Whelan, Barton G. Ferrell, Clark E. Cohen | 2006-05-09 |
| 6804587 | Adjustment of vehicle-implement trajectories to compensate for lateral implement offset | Michael L. O Connor, Thomas Bell, Michael Eglington, Lars Leckie, Kurt R. Zimmerman | 2004-10-12 |
| 6762714 | Low cost system and method for making dual band GPS measurements | Clark E. Cohen, David G. Lawrence, Stewart Cobb, Paul Montgomery, Miro Samek +3 more | 2004-07-13 |