| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve measurement precision of distance and relative speed by eliminating measurement errors of distance and relative speed caused by deviation of the center frequency between transmission signals and signals for demodulation and deviation of transmission timing and generation timing of the signals for demodulation. <P>SOLUTION: Transmission operation and reception operation of FM-CW waves are alternately performed between a transceiver 10 and a transceiver 20; signals for demodulation are generated in synchronization with signal transmission timing of the transceiver at the transmission side for performing demodulation processing of reception signals and generating beat signals at the transceiver at the reception side; beat frequencies of the generated beat signals are detected; and distance and relative speed of the transceiver 10 and the transceiver 20 are measured by detection results of the beat frequencies detected by both the transceivers 10, 20. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
