Patent ID: 11913757
Assignee: ROSEMOUNT AEROSPACE INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC F  G | IPC F

Claim 10:
11. A system for constraining navigational drift in a munition caused by Inertial Measurement Unit (IMU) bias error during flight of the munition in a constellation of a plurality of munitions in a Global Positioning System (GPS) denied attack of a plurality of ground targets, comprising:
a datalink communication system configured and operable to communicate with other munitions;
a navigation system for navigating the munition in flight, wherein the navigation system is communicatively coupled to the datalink communication system, the navigation system having a memory configured to store instructions in a processor disposed in communication with the memory, wherein the processor upon execution of the instructions is configured to:
determine an estimated position and covariance of the estimated position of the munition via the guidance system;
determine a range of the munition relative to at least one other munition in the munition constellation via the datalink communication system;
share the estimated position and range with the at least one other munition in the munition constellation by the datalink communication system;
determine navigational drift by the guidance system utilizing the estimated position of at least one other munition and the range to that at least one other munition in the munition constellation; and
constrain navigation drift of the munition by compensating for IMU bias error utilizing the determined navigational drift for the munition.