| 摘要 |
<p>A received signal vector (X(t)) from an array antenna (#1-#4) is subjected to frequency offset correction by a frequency offset correcting section (6) and subjected to adaptive array processing. Based on an output signal (y(t)) from an adaptive array and a reference signal (d(t)) held in a memory (30) in a reference signal section or a replica signal (d'(t)) outputted from a forced phase lock processing section (20) in a section where a reference signal is not present, an error signal (e(t)) is referenced and an offset extracting section (100) extracts a frequency offset amount δ υ from the error signal.</p> |
