Compact test range system with adjustable feed horn locations

A compact test range system for testing an article located within a test zone, the compact test range system comprising:

• a reflector defining a surface and a focus;
• a feed horn configured to emit a radio wave including an infinite number of rays, wherein the rays of the radio wave include an uppermost ray, a middle ray, and a lowermost ray directed towards the surface of the reflector;
• one or more processors;
• and
• a memory coupled to the one or more processors, the memory storing data comprising a database and program code that, when executed by the one or more processors, causes the compact range test system to:
• receive as input a plurality of field tilt angles;
• in response to receiving the plurality of field tilt angles, determine three points of intersection between the uppermost ray, the middle ray, and the lowermost ray at a first field tilt angle, wherein the three points of intersection define a triangle;
• determine a centroid of the triangle;
• and
• set the centroid of the triangle as a first test position of the feed horn, wherein the first test position is offset in an x-direction and a y-direction from the focus of the reflector, and the first field tilt angle corresponds to the first test position.