| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To resolve the problem that, in a pulse specifications detection circuit which sets a constant slice level and analyzes the specifications of an arriving signal exceeding the level, when there is an interference input such as noise exceeding the level or other radio waves, their specifications are analyzed and pulse specifications detection cannot be conducted until the interference disappears no matter how intense an arriving pulse is. <P>SOLUTION: A slice-level setting function 51 sets a first slice level exceeding a noise level. When a level decision function 53 decides that a signal exceeding the first slice level has arrived, specifications measurement function 54 analyzes its specifications. When the signal exceeding the first slice level is a CW signal which is longer than a predetermined duration, a second slice level which is higher than the signal level is set. Pulse specifications detection can be thereby conducted when a signal superimposed on the CW signal is a larger level signal than the CW signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
