| 6720918 |
Antenna distortion estimation and compensation |
Lawrence McGovern |
2004-04-13 |
| 6691955 |
Spacecraft having a momentum wheel configuration that prevents zero wheel speeds |
Xenophon Price |
2004-02-17 |
| 6570535 |
Single-receiver multiple-antenna RF autotrack control |
Homer D. Stevens, Xenophon Price |
2003-05-27 |
| 6456907 |
System and method for limiting the effects of actuator saturation to certain body axes of a spacecraft |
Xenophon Price |
2002-09-24 |
| 6445981 |
Controller and control method for satellite orbit-keeping maneuvers |
John S. Higham |
2002-09-03 |
| 6439507 |
Closed-loop spacecraft orbit control |
Birgit Sauer |
2002-08-27 |
| 6311929 |
Spacecraft and appendage stepping methods that improve spacecraft attitude pointing and cancel solar array slew disturbances |
Fatima Kazimi, Tung Y. Liu, Yat Fai Leung, John S. Higham |
2001-11-06 |
| 6285928 |
Onboard attitude control using reaction wheels |
Scott W. Tilley, Thomas J. Holmes |
2001-09-04 |
| 6141606 |
Wheel speed control system for spacecraft with rejection of null space wheel momentum |
— |
2000-10-31 |
| 6135394 |
Practical method and apparatus for satellite stationkeeping |
Ahmed Kamel, Walter S. Gelon |
2000-10-24 |