| 摘要 |
<p>PROBLEM TO BE SOLVED: To cope with generation, disappearance, movement of a wave source by carrying out a clustering process, obtaining a standard deviation from a plurality of azimuth data for every clustering and obtaining a grade from the deviation. SOLUTION: This apparatus comprises a receiving antenna, a receiver, an analog/digital converter, a signal-processing apparatus based on a MUSIC algorithm and an angle display device. The signal-processing apparatus has in its internal constitution a buffer memory, a correlation matrix-calculating means, a proper value and proper vector-calculating means, an azimuth evaluation function-calculating means, a peak-detecting means, a clustering means, a standard deviation-calculating means and a grade-judging means, and processes information based on a plurality of time series azimuth data. Specifically, the signal-processing apparatus sets an angle resolution on the basis of azimuth information obtained by the peak-detecting means, carries out clustering and classifies an azimuth in terms of attributes. Thereafter, the apparatus carries out statistic processing in relation to the azimuth information in each cluster, calculates a standard deviation and judges a grade.</p> |
