| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide technology concerning a radar system capable of accurately calculating the azimuth of each target, even when the frequency spectra corresponding to different targets overlap. <P>SOLUTION: The radar system receives reflection signals, received via at least two receiving antennas as a receiving signal of each receiving antenna, calculates a phase difference between peak frequencies of the beat signals generated from a transmitting signal and the receiving signal; stores the calculated phase difference to a storing region; and calculates the azimuth of a target, on the basis of the calculated phase difference. In addition, the radar system predicts whether the peak frequencies of a plurality of the targets overlap; on the basis of prediction information predicting change of the peak frequency of the beat signal; including the azimuth information concerning the calculated azimuth, calculates the phase difference as prediction phase difference, when the peak frequencies overlap on the basis of the phase difference stored to the storing region, and calculates the azimuth of the target, on the basis of the prediction phase difference, when it is predicted that the peak frequencies overlap. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
