| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To detect a pulse transmitted to own equipment easily by a simple equipment structure. <P>SOLUTION: A pulse detecting equipment includes: a log compression processor 105 for holding the frequency component of a reception signal input by an antenna and subjecting its signal level to logarithmic conversion; an AD convertor 106 for converting the reception signal the level of which has been subjected to logarithmic conversion from analog form into digital form; a first detector 110 for detecting a signal level from a signal obtained by limiting the reception signal which has been converted into digital form by a band of a predetermined first frequency; a second detector 111 for detecting a signal level from a signal obtained by limiting the reception signal which has been converted into digital form by a band of a predetermined second frequency, which is lower than the first frequency; and a pulse detector 113 for, using a comparison result between the signal level detected by the first detector and the signal level detected by the second detector, detecting a pulse with a predetermined frequency as a signal transmitted to own equipment. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
