Raytheon Company

Andrew J Thomas

Shuwu Wu

Joseph Chang

Matt Keti

James R Piper

Compression garment with an integrated receptacle

A method for multi-track environmental fault monitoring for aerial platforms includes estimating a normalized squared residual error (NSRE) for each of one or more satellite-receiver tracks over time. The method also includes determining an averaged NSRE for each satellite-receiver track by averaging the NSRE over multiple time windows. The method further includes performing a threshold test on the averaged NSRE to determine a filter state. In addition, the method includes determining whether to apply a scale factor for each satellite-receiver track based on the filter state.

System and method for multi-track environmental fault monitoring for aerial platforms

A compression garment with an integrated receptacle that provides liquid to a user is disclosed. The compression garment has at least one exterior cavity for receiving a receptacle and at least one tube channel with tube channel openings for receiving the tube from the exterior cavity and to route the tube across the chest of a user and into a webbing loop. An o-ring that locks a breakable foil seal in place is provided when a spout is connected to the neck element and the spout secures the liquid in the reservoir by compressing the o-ring on the foil seal. A grab ridge is then used to release the reservoir from the cavity of the compression garment as desired by the user.

A method includes repeatedly determining a distance of an aircraft from a landing location. The method also includes, during a first stage in which the aircraft is at least a threshold distance from the landing location, performing iono-free processing during navigation of the aircraft. The method further includes, during a second stage in which the aircraft is less than the threshold distance from the landing location and a velocity of the aircraft is greater than a velocity threshold, performing divergence-free processing during navigation of the aircraft to address possible ionospheric threats. In addition, the method includes, during a third stage in which the aircraft is less than the threshold distance from the landing location and the velocity of the aircraft is less than the velocity threshold, calculating one or more floor values for a Differential Ionospheric Correction (DIC) sigma, and determining a navigation solution to protect against nominal ionospheric conditions.

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Claremont, CA, United States of America

Andrew J Thomas