Patent ID: 11953615
Assignee: UHNDER, INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A method for calibrating a radar system for system impairments, wherein the method comprises:
transmitting, with a transmitter, radio signals;
receiving, with a receiver, radio signals that include radio signals transmitted by the transmitter and reflected from objects in an environment;
wherein the a transmitter and the a receiver are coupled to an antenna array;
rotating, with a platform, the receiver and the transmitter in both azimuth and elevation, and wherein an array center of the antenna array is not aligned with the platform's rotational center;
in the presence of at least one object, collecting from the receiver, with a calibration module, reflected signals from the at least one object at desired angles of interest in azimuth and elevation, calculating a misalignment value for a misalignment between the array center of the antenna array and the rotation center of the platform, and
correcting, with the receiver, for phase distortion and angle-of-arrival error due to the misalignment based upon the misalignment value, wherein the misalignment between the array center of the antenna and the rotation center of the platform is a nodal displacement, and wherein the array center of the antenna array is a nodal point.