US 12,405,339 B2
Systems, methods, and apparatus for processing high frequency signals
Gary A. Ray, Chicago, IL (US); Tai A. Lam, Chicago, IL (US); and Alec Adams, Chicago, IL (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Sep. 9, 2022, as Appl. No. 17/942,042.
Prior Publication US 2024/0094324 A1, Mar. 21, 2024
Int. Cl. G01S 3/46 (2006.01)
CPC G01S 3/46 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method for processing high frequency signals comprising:
receiving, by a receiver system, an incoming signal,
wherein the receiver system includes an array of antenna elements and a receiver unit associated with each antenna element of the array, and
wherein the antenna elements are linearly and non-uniformly arranged;
outputting signals from each of the antenna element of the array to corresponding receiver units of the receiver system;
determining, by one or more processors associated with the receiver system, a received signal vector based on the signals output from each of the antenna element of the array;
determining, by the one or more processors, a manifold matrix, wherein the manifold matrix is based on a spacing vector representing positions of the antenna elements of the array;
determining, by the one or more processors, a phase estimate vector by applying the manifold matrix to values of the received signal vector; and
estimating, by the one or more processors, an angle of arrival of the incoming signal based on the phase estimate vector and phases of complex input parameters, wherein the phases of the complex input parameters are between −π to π.