| 8766848 |
Method and system for estimating position using dual real time kinematic engines |
Liwen L. Dai, Chaochao Wang |
2014-07-01 |
| 8665145 |
System and method for determining the heading angle of a vehicle |
Liwen L. Dai, Yunfeng Shao |
2014-03-04 |
| 8427365 |
Method and system for estimating position using dual real time kinematic engines |
Liwen L. Dai, Chaochao Wang |
2013-04-23 |
| 8242953 |
Distance dependent error mitigation in real-time kinematic (RTK) positioning |
Liwen L. Dai, Richard Sharpe, Ronald R. Hatch |
2012-08-14 |
| 8035552 |
Distance dependant error mitigation in real-time kinematic (RTK) positioning |
Liwen L. Dai, Richard Sharpe, Ronald R. Hatch |
2011-10-11 |
| 7961141 |
Methods and systems to increase accuracy in the navigation of single frequency receivers |
Liwen L. Dai, Chaochao Wang, John Perry Genta |
2011-06-14 |
| 7961143 |
Partial search carrier-phase integer ambiguity resolution |
Liwen L. Dai, Richard Sharpe, Ronald R. Hatch |
2011-06-14 |
| 7679555 |
Navigation receiver and method for combined use of a standard RTK system and a global carrier-phase differential positioning system |
Liwen L. Dai, Chaochao Wang, Ronald R. Hatch, Richard Sharpe |
2010-03-16 |
| 7427950 |
Method for increasing the reliability of position information when transitioning from a regional, wide-area, or global carrier-phase differential navigation (WADGPS) to a local real-time kinematic (RTK) navigation system |
Jing Sun, Richard Sharpe, Frederick W. Nelson, Terence D. Pickett, Ronald R. Hatch |
2008-09-23 |