| 摘要 |
<p>PURPOSE:To eliminate the saturation of even a jamming signal of a high intensity, by detecting the jamming signal and a received signal containing a solar radio wave after a logarithmic amplification thereof to output a logarithmic video signal. CONSTITUTION:This apparatus is provided with a logarithmic amplifier 102 and an A/D converter 103 as logarithmic detection means, an amplitude detector 109 and an A/D converter 110 as amplitude detecting means, clutter removers 104 and 111 and a clutter area setter 105 as clutter removing means, average- amplitude extractors 106 and 112 and amplitude/display distance converters 107 and 113 as average amplitude extracting means, video generators 108 and 114 as video generating means, an amplitude decider 115 as amplitude deciding means and a video selector 116 as video selecting means. Then, outputs of the generators 108 and 114 and a video selection signal 118 from the decider 115 are sent to the selector 116. The selector 116 selects the output of the generator 108 when the signal 118 gives a logical value '1' (or '0'). Otherwise, the selector 116 does that of the generator 114 to produce outputs.</p> |
