| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a satellite bidirectional time comparison method that does not require a spectral diffusion modem of complicated configuration and a satellite channel of a wide band. <P>SOLUTION: Signals A and B of the same angle frequency (ω<SB>0</SB>), based on respective signals being reference of respective times, are generated in respective stations, and two high frequency signals V<SB>1</SB>and V<SB>2</SB>in which an angle frequency difference is 2ω<SB>0</SB>are generated in a station A, to transmit them to a station B. A signal C, where the angle frequency difference is 2ω<SB>0</SB>is generated from the two high-frequency signals transmitted in the station B to find a phase difference M<SB>A</SB>between the 2 multiplication signal of the signal A and the signal C. At the same time, two high-frequency signals V<SB>3</SB>and V<SB>4</SB>in which the frequency difference is 2ω<SB>0</SB>are generated in the station B to be transmitted to the station A, and a signal D where the angle frequency difference is 2ω<SB>0</SB>is generated from the two high-frequency signals transmitted in the station A. A phase difference M<SB>B</SB>between the 2 multiplication signal of the signal B and the signal D is found, and the time difference is found by dividing (M<SB>B</SB>-M<SB>A</SB>) by 4ω<SB>0</SB>. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
