| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radio wave guide device capable of detecting a target appeared only instantaneously with a high S/N ratio, without carrying out clutter restraint by an MTI, and capable of measuring an angle by two-channel signals. <P>SOLUTION: In this radio wave guide device, a signal processor 7 for processing a reception signal from a receiver 3 is provided with fast Fourier transform processing parts 71a, 71b for fast Fourier transform of a data sequence sampled in every pulse repetition period of the reception signal, band limited fast inverse Fourier transform processing parts 72a, 72b for inverse Fourier transform of signals after the frequencies other than a prescribed frequency band are brought into zero, out of the signals of frequency areas obtained by the fast Fourier transform processing parts, short-time Fourier transform processing parts 73a, 73b for coherent-integrating the maximum values of signals in time zones output from the band limited fast inverse Fourier transform processing parts, and a plurality of points near thereto with the maximum point therebetween, by short-time Fourier transform, and a target detecting and angle measuring processing part 74 for detecting the target and for measuring the angle, based on the signals obtained in the short-time Fourier transform processing parts. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
