Company Filing History:
1 out of 1,258 
1 out of 3,387 
Years Active: 2008-2016
Title: J Alexander Fax: Innovator in Navigation Systems
Introduction
J Alexander Fax is a notable inventor based in Los Angeles, CA. He has made significant contributions to the field of navigation systems, holding a total of 2 patents. His work focuses on improving the efficiency and accuracy of navigation technologies.
Latest Patents
One of his latest patents is titled "Efficient processing of double differenced updates in a Kalman filter." This invention provides systems and methods for sequentially updating a Kalman filter in a navigation system. It involves receiving respective signals from multiple transmitters containing range-finding data at various antennas. For each transmitter, a single differenced observable is calculated between a pair of antennas. A common bias, stored as a state in the Kalman filter, is subtracted from the calculated observable to yield double differenced residual values. These values are then used to update multiple states stored in the Kalman filter.
Another significant patent is "Force balanced instrument system and method for mitigating errors." This invention addresses measurement errors caused by charge buildup in force balanced instruments. The system mitigates these errors by applying alternating positive and negative charge pulses to opposing electrodes, effectively reducing the net residual charge on the electrodes.
Career Highlights
Throughout his career, J Alexander Fax has worked with prominent companies such as Litton Systems, Inc. and Northrop Grumman Systems Corporation. His experience in these organizations has contributed to his expertise in navigation systems and instrument technology.
Collaborations
One of his notable collaborators is Robert C Griffith, with whom he has worked on various projects in the field of navigation and measurement systems.
Conclusion
J Alexander Fax's innovative contributions to navigation systems and instrument technology highlight his role as a significant inventor in the industry. His patents reflect a commitment to enhancing the accuracy and efficiency of navigation technologies.