Systems and methods for sorting golf balls having a radar detectable mark

A golf ball sorting system, comprising:

• a ball feeder configured to transport a plurality of golf balls, wherein at least some of the plurality of golf balls have a marking pattern comprising a conductive material that is not visible to an observer because the marking pattern is covered by at least one other layer of the golf ball;
• a detection system configured to receive the plurality of golf balls, inspect the plurality of golf balls, and output a detection result from a control unit, wherein the detection system comprises a first detecting unit configured to output a first detection result and a second detecting unit configured to output a second detection result, wherein the detection result comprises the first detection result and the second detection result;
• and
• a sorting system configured to receive the detection result and sort the plurality of golf balls based on the detection result to separate the plurality of golf balls into at least three groups each corresponding to different categories of golf balls, including a first category of golf balls that do not have the marking pattern comprising a conductive material, a second category of golf balls that have a first type of the marking pattern comprising a conductive material, and a third category of golf balls that have a second type of the marking pattern comprising a conductive material.