Raytheon Company

Thomas L McKendree

Hans L Habereder

John D Britigan

Timothy Schempp

Robert M Fries

Donald R Ormand

A munition is presented which includes an integrity verification system that measures the integrity of the munition. When an integrity threshold is not met, engagement of the munition with a predetermined target is aborted. Also presented is a methodology for gating the engagement of the munition with the target. The methodology includes performing an integrity check of the munition after it is deployed. The method further includes aborting the engagement of the target when the integrity check of the munition fails.

Munition with integrity gated go/no-go decision

Methods and apparatus for providing integrity alert information include embedding the integrity alert message in a longer message stream that is broadcast to a receiver in order to meet a predetermined time to alert. In one particular embodiment, the receiver is a GPS receiver, the longer message is a navigation signal, and the integrity alert message is a 50 bit word containing an updated user range accuracy index. Advanced GPS users recognize the embedded integrity alert message by its message ID, pass a parity check on the integrity alert message and use the updated user range accuracy index in subsequent signal processing. Legacy GPS users fail parity on the integrity alert message and discard the message. The impact on legacy users is negligible since the infrequent alerts will only occasionally cause data to be discarded.

Methods and apparatus for satellite integrity messaging

A system and method of providing situational awareness and weapon targeting is presented. The method includes determining the location of one or more enemy sites and one or more friendly sites. A 'Do Not Engage' (DNE) zone is determined around each of the friendly sites and an 'Allowable Engagement' (AE) zone is established around each of the enemy sites, wherein none of the AE zones overlap any of the DNE zones. An engagement plan is then determined based on the AE zones and integrity bounds on candidate munitions. The system includes a processing and communications network and a sensor element in communication with the processing and communications network. The system also includes a command control element in communication with the processing and communications network and an operating elements section in communication with the processing and communications network.

Integrity bound situational awareness and weapon targeting

A method for providing integrity bounding of a weapon for use in weapon selection and targeting is presented. The method determines an integrity bound for the weapon, the integrity bound defining a zone around the target aim-point within which engagement must occur to meet a predetermined integrity level (i.e., a probability of engagement within an allowable engagement zone). A method of assigning weapons for engaging a target is also presented. The method includes determining an aim-point of a target and determining an alert limit for the aim-point, the alert limit comprising a zone that includes the aim-point and excludes any friendly sites. Weapon selection is then performed by selecting a weapon having an integrity bound less than or equal to the alert limit.

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Huntington Beach, CA, United States of America

Thomas L McKendree