US 12,461,245 B2
Preserving positioning accuracy with age of data
Scott Allen Imhoff, Parker, CO (US); Marcus Alton Teter, Belgrade, MT (US); Mac Allen Cody, Richardson, TX (US); and James J. Richardson, Temecula, CA (US)
Assigned to Raytheon Company, Arlington, VA (US)
Filed by Raytheon Company, Arlington, VA (US)
Filed on Feb. 23, 2023, as Appl. No. 18/113,591.
Prior Publication US 2024/0288589 A1, Aug. 29, 2024
Int. Cl. G01S 19/02 (2010.01)
CPC G01S 19/02 (2013.01) 20 Claims
OG exemplary drawing
 
1. A master controller comprising:
processing circuitry;
a memory including instructions that, when performed by the processing circuitry, cause the processing circuitry to perform operations for improved satellite position determination with age of measurement data, the operations comprising:
receiving satellite position data from a satellite, the satellite position data determined by the satellite and indicating an estimated position, in space, of the satellite;
in a first iteration, increasing a dimensionality of the satellite position data by one or more dimensions resulting in N-dimensional input data, where N is a positive integer;
performing dynamic mode decomposition on the N-dimensional input data resulting in a Koopman operator and modes of the N-dimensional input data;
adaptive filtering a time domain residue portion of the Koopman operator resulting in a filtered residue;
updating, based on the filtered residue and a time domain deterministic component of the Koopman operator, a state vector of the satellite associated with the satellite position data; and
a transceiver configured to communicate the state vector to the satellite to provide more accurate satellite position data than the satellite position data.