| 摘要 |
PROBLEM TO BE SOLVED: To attain the directional control of an antenna reliable and high in accuracy without being influenced by meteorological conditions or the like. SOLUTION: The correlation value of the signal level of spread spectrum signals received by an antenna 10 is obtained by a correlation value computing part, 14, and whether or not a desired wave has reached the specified value is judged by a tracking control part 13 from the correlation value of the signal level. In the state of judging that the desired wave has reached the specified value, an antenna tracking signal is generated on the basis of the signal level. In the state of judging that the desired wave is the specified value or less, an antenna tracking signal is generated corresponding to the value obtained by correcting the signal level with the correlation value, to drive and control the antenna 10. |
