| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a demodulator capable of accurately obtaining a center frequency of a PSK modulation signal and accurately carrying out demodulation even when the PSK modulation is a short burst signal. <P>SOLUTION: The demodulator includes: a first carrier component eliminating section 1 for roughly eliminating a carrier component from a signal obtained by applying orthogonal detection to a PSK modulation burst signal obtained by primary inverse spread; a second carrier component eliminating section 2 for eliminating the carrier component with high accuracy from the signal whose carrier component is roughly eliminated by the first carrier component eliminating section 1; and a delay detector 3 for applying delay detection to the signal whose carrier component is eliminated with high accuracy by the second carrier component eliminating section 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
