| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a key verification system which can determine the position of a key terminal while suppressing the number of antennas provided in an operation object.SOLUTION: A vehicle 2 comprises plural directivity-controlled antennas 11a to 11c. The first directivity-controlled antenna 11a measures the angle formed with a key terminal 1 (a first key direction angleθa) by confirming at which angle communication with the key terminal 1 is established while changing directivity sequentially. Similarly, the angle formed between the second directivity-controlled antenna 11b and the key terminal 1 (a second key direction angleθb) is measured and the angle formed between the third directivity-controlled antenna 11c and the key terminal 1 (a third key direction angleθc) is measured. The vehicle 2 determines the position of the key terminal 1 by confirming the combination of these key direction anglesθa toθc.</p> |
