Lockheed Martin Corporation

Scott O Sorber

Kenneth B Donovan

Steven J Pratt

Mark Bullock

Matthew Stafford

Charles Apker

David D Schmidt

James E Naylor

An apparatus for performing calibration of an antenna array having a plurality of antennas including at least a first antenna and a second antenna. The apparatus includes a global navigation satellite system receiver configured to measure a first phase of a first signal received by the first antenna from a satellite and a second phase of a second signal received by the second antenna from the satellite. The apparatus also includes at least one processor configured to receive the first phase and the second phase from the global navigation satellite system receiver and to operate in a calibration mode to determine a difference between the first and second phases.

Antenna array calibration

Methods and devices for navigation and/or guidance. A device may be configured to predict an uncertainty of positioning data in the area, the prediction being based at least in part on a dynamic navigation model. The device may further be configured to guide the mobile entity based at least in part on the predicted uncertainty of the positioning data in the area. By predicting and guiding while the mobile entity is outside the area, the device may proactively mitigate an impact of the predicted uncertainty of the positioning data by initiating rerouting of the mobile entity, updating an inertial navigation system, and/or issuing an alert regarding the predicted uncertainty to of the positioning data to an operator of the mobile entity. The dynamic navigation model may comprise at least one of an environment model, a cost model, one or more positioning system models, and an excursion route model.

Proactive mitigation of navigational uncertainty

Most GPS equipped platforms currently in use have no anti-jamming capability. However, for various reasons, the cost of replacing the legacy GPS receivers with newer GPS receivers capable of anti-jamming is often prohibitive. Thus, an apparatus having antenna electronics that can perform the anti-jammming function is used to regenerate clean RF signals (with interference removed) to a legacy GPS receiver. With the apparatus, the legacy GPS receiver regards the RF signals as the usual interference-free RF signals.

Apparatus for providing anti-jamming capability to legacy GPS receivers

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Vestal, NY, United States of America

Scott O Sorber