| 摘要 |
<p>PURPOSE:To obtain a radar-signal processing circuit in which the blur and the stain of an image are removed. CONSTITUTION:The waveform at a frequency and an amplitude which are obtained by a segment-frequency analytical circuit 9 is interpolated in a frequency direction by an interpolation circuit 14. A first integrating circuit 16 integrates the interpolated waveform from the start point of an allowable frequency region up to a frequency which is set by a frequency setting circuit 15, it computes an area, and a first area-center computation circuit 17 computes a frequency at which the area is halved so as to be output to a central- frequency detection circuit 20. A second integrating circuit 18 integrates the interpolated waveform up to the finish point of the allowable frequency region from the frequency which is set by the frequency setting circuit 15, and a second area-center computation circuit 19 computes a frequency at which the area is halved so as to be output to the center-frequency detection circuit 20. The center-frequency detection circuit 20 detects the frequency of the first area-center computation circuit 17 and the center frequency at the frequency of the second area-center computation circuit 19 as criterion-point frequencies.</p> |
