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Tung-ching Tsao patents

Recent patents with Tung-ching Tsao listed as an inventor - additional entries may be under other spellings.


Tung-ching Tsao - Related organizations: The Boeing Company patents

Star tracker rate estimation with kalman filter enhancement

08/21/14 - 20140236401 - An attitude estimator that uses star tracker measurements and enhanced Kalman filtering, with or without attitude data, to provide three-axis rate estimates. The enhanced Kalman filtering comprises taking an average of forward and rearward propagations of the Kalman filter states and the error covariances. The star tracker-based rate estimates can
Inventors: Tung-ching Tsao, Richard Y. Chiang

Gyroless three-axis sun acquisition using sun sensor and unscented kalman filter

08/21/14 - 20140231589 - An attitude estimator that uses sun sensor outputs as the only attitude determination measurements to provide three-axis attitude information. This is accomplished by incorporating the Euler equation into the estimator. An unscented Kalman filter is employed to accommodate various nonlinear characteristics and uncertainties of the spacecraft dynamics and thus improve
Inventors: Tung-ching Tsao, Richard Y. Chiang

Modified kalman filter for generation of attitude error corrections

04/04/13 - 20130085628 - Methods, systems, and computer-readable media are described herein for using a modified Kalman filter to generate attitude error corrections. Attitude measurements are received from primary and secondary attitude sensors of a satellite or other spacecraft. Attitude error correction values for the attitude measurements from the primary attitude sensors are calculated
Inventors: Rongsheng Li, Tung-ching Tsao, Arunkumar P. Nayak

Gyroless transfer orbit sun acquisition using only wing current measurement feedback

02/03/11 - 20110024571 - A system and method for gyroless transfer orbit sun acquisition using only wing current measurement feedback is disclosed. With this system and method, a spacecraft is able to maneuver itself to orient its solar panel to its maximum solar exposure spinning attitude. The disclosed system and method involve controlling a
Inventors: Tung-ching Tsao, Richard Y. Chiang


### Tung-ching Tsao patent invention listings

The bibliographic references displayed about Tung-ching Tsao's patents are for a recent sample of Tung-ching Tsao's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Tung-ching Tsao filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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