Issued Patents All Time
Showing 25 most recent of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11142351 | Earth satellite attitude data fusion system and method thereof | Ying-Wen Jan, Ming-Yu YEH, Wei Wei | 2021-10-12 |
| 11046462 | Satellite attitude data fusion system and method thereof | Ying Wei Jan, Ming-Yu YEH, Wei Wei, Jia Li | 2021-06-29 |
| 8213803 | Method and system for laser based communication | Ketao Liu | 2012-07-03 |
| 8019544 | Real-time refinement method of spacecraft star tracker alignment estimates | David D. Needelman, Rongsheng Li | 2011-09-13 |
| 8000896 | Scale factor calibration and compensation for angular position resolver | Ketao Liu, Jeffrey L. Lee | 2011-08-16 |
| 7877173 | Method and apparatus for determining a satellite attitude using crosslink reference signals | Ketao Liu | 2011-01-25 |
| 7633432 | Method and apparatus for precision antenna boresight error estimates | — | 2009-12-15 |
| 7561968 | Scale factor calibration and compensation for angular position resolver | Ketao Liu, Jeffrey L. Lee | 2009-07-14 |
| 7487016 | Method for compensating star motion induced error in a stellar inertial attitude determination system | Richard A. Fowell, Rongsheng Li | 2009-02-03 |
| 7337021 | Robust spacecraft controller and method for designing same | Richard Y. Chiang, Che-Hang Charles Ih | 2008-02-26 |
| 7324046 | Electronic beam steering for keyhole avoidance | — | 2008-01-29 |
| 7310578 | Fast access, low memory, pair catalog | James P. Alstad, David D. Needelman, Rongsheng Li, Richard A. Fowell, Peter Lai | 2007-12-18 |
| 7260456 | Pixel-frequency slews and filters for star data measurements | Richard A. Fowell | 2007-08-21 |
| 7260026 | Time-of-day tracking with INS input | — | 2007-08-21 |
| 7228231 | Multiple stayout zones for ground-based bright object exclusion | David D. Needelman, Richard A. Fowell, Peter Lai, Rongsheng Li | 2007-06-05 |
| 7219014 | Method and apparatus for real-time star exclusion from a database | David D. Needelman, Rongsheng Li, Richard A. Fowell, Peter Lai, Bruce N. Eyerly +1 more | 2007-05-15 |
| 7136752 | Method and apparatus for on-board autonomous pair catalog generation | David D. Needelman, Rongsheng Li, Richard A. Fowell, Peter Lai | 2006-11-14 |
| 7124001 | Relative attitude estimator for multi-payload attitude determination | Rongsheng Li, Hanching Grant Wang | 2006-10-17 |
| 7062363 | Refinement of spacecraft angular velocity and attitude estimates using star data | David D. Needelman, Rongsheng Li | 2006-06-13 |
| 6863244 | Mitigation of angular acceleration effects on optical sensor data | Richard A. Fowell, Salma Saeed, Rongsheng Li | 2005-03-08 |
| 6825806 | Satellite methods and structures for improved antenna pointing and wide field-of-view attitude acquisition | Ketao Liu, Richard A. Fowell, Rongsheng Li | 2004-11-30 |
| 6766227 | Attitude-acquisition methods and systems for controlled spacecraft attitude | David D. Needelman, Rongsheng Li | 2004-07-20 |
| 6691033 | System and method for calibrating inter-star-tracker misalignments in a stellar inertial attitude determination system | Rongsheng Li, Douglas H. Hein | 2004-02-10 |
| 6681159 | Spacecraft methods and structures with enhanced attitude control that facilitates gyroscope substitutions | Rongsheng Li, Jeffrey A. Kurland, Alec M. Dawson, David S. Uetrecht | 2004-01-20 |
| 6615117 | Attitude determination system and method with outer-loop gyro scale-factor non-linearity calibration | Rongsheng Li, David L. Augenstein | 2003-09-02 |