Method for recognizing object by using millimeter wave and electronic device supporting same method

An object recognition method performed by an electronic device, the method comprising:

• controlling an antenna module to output first beams having a first beam width toward a first spatial range around the electronic device, wherein the antenna module emits and receives millimeter-wave;
• controlling the antenna module to receive a first reflection pattern of the first beams;
• determining at least one section containing an external object among a plurality of sections constituting the first spatial range, based on the first reflection pattern of the first beams;
• controlling the antenna module to output second beams having a second beam width toward the at least one section;
• controlling the antenna module to receive a second reflection pattern of the second beams;
• recognizing the external object based on the second reflection pattern of the second beams, and authenticating a user based on the recognizing result;
• controlling the antenna module to output third beams when the user is authenticated;
• controlling the antenna module to receive a third reflection pattern of the third beams;
• and
• determining state information or motion information of the external object, based on the third reflection pattern of the third beams.

A computer-readable storage medium storing therein instructions executable by a processor, wherein when the instructions are executed by a processor of an electronic device, the instructions cause the processor to:

• control an antenna module to output first beams having a first beam width toward a first spatial range around the electronic device, wherein the antenna module emits and receives millimeter-wave;
• control the antenna module to receive a first reflection pattern of the first beams;
• determine at least one section containing an external object among a plurality of sections constituting the first spatial range, based on the first reflection pattern of the first beams;
• control the antenna module to output second beams having a second beam width toward the at least one section;
• control the antenna module to receive a second reflection pattern of the second beams;
• recognize the external object based on the second reflection pattern of the second beams, and authenticate a user based on the recognizing result;
• control the antenna module to output third beams when the user is authenticated;
• control the antenna module to receive a third reflection pattern of the third beams;
• and
• determine state information or motion information of the external object, based on the third reflection pattern of the third beams.