| 摘要 |
PROBLEM TO BE SOLVED: To accurately estimate a radio arrival direction with a simple structure.SOLUTION: The radio direction estimation device 10 has a first patch antenna 11, a second patch antenna 12, a rotation control unit 13, a number of received packets count part 16, and a radio direction estimation part 17. The first patch antenna 11 receives radio. The second patch antenna 12 is placed at a prescribed angle with respect to the first patch antenna 11 and receives the radio. The rotation control unit 13 rotates the first and second patch antennas 11, 12 in the prescribed directions. The number of received packets count part 16 counts the number of received data for each of the first and second patch antennas 11, 12 at respective rotation angles controlled by the rotation control unit 13. The wave direction estimation part 17 estimates the rotation angle at which a change ratio of the number of received data counted by the number of received packets count part 16 becomes maximum to be the radio arrival direction. |
