| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To electrically measure an azimuth angle and an elevation angle. <P>SOLUTION: A radar antenna includes at least three array antennas 30, 31 and 32 having radiating elements provided linearly, in a z-axis direction which is one direction and being separated in a y-axis direction vertical to the z-axis. The z-axis arrangement positions of the respective array antennas are made different. For a plurality of sets consisting of at least any two selected from among the plurality of array antennas, the azimuth angleϕand the elevation angleθare obtained from each of measured phase differences of the respective sets, by using the relation for the phase differenceδamong the array antennas, the azimuth angleϕand the elevation angleθ. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
