| 摘要 |
<p>[PROBLEMS] To propose a communication device which can calibrate a frequency error easily and can acquire highly precise position information. [MEANS FOR SOLVING THE PROBLEMS] The communication device comprises a frequency error detection circuit for detecting, in response to a reception signal, a frequency error contained in the reception signal, to output a frequency error correction output, main frequency error correction means for correcting, on the basis of the frequency error correction output, the frequency error contained in the reception signal, main correlation operation means for performing a correlation operation between the received output, the frequency error of which is corrected by the main frequency error correction means, and a pseudo random code, and a data processing circuit for outputting position information on an electric wave source, on the basis of the output of the main correlation operation means.</p> |
