发明名称 |
APPARATUS FOR CLOCK CORRECTION AND SYNCHRONIZATION USING LORAN-C SIGNALS AND METHOD FOR CLOCK CORRECTION AND SYNCHRONIZATION USING THE SMAE |
摘要 |
PURPOSE: A time correction and a synchronizer using an LORAN(Long Range Navigation) signal and the time correction and the synchronizing method using the same are provided to effectively compensate a diurnal effect by supposing the diurnal effect in the Loran signal as the amplitude and the phase in the Loran signal, correcting and synchronizing the diurnal effect. CONSTITUTION: A phase comparing part(40) measures the phase difference value between the source second pulse from a Loran receiver and the second pulse from a frequency control part . An average calculation unit for signal traveling(50) measures the average value of a Loran signal traveling from the date about time interval between the second pulse in the Loran receiver and the second in a frequency oscillator. The pattern generation and comparison compares the average traveling value with the amplitudes and phase of the supposed patterns of a diurnal effect existing in the Loran signal and generates a compensation signal for correcting the diurnal effect in the Loran signal. The control signal output unit(80) transmits the offset value calculated in the calculation unit for frequency offset to a frequency control unit.
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申请公布号 |
KR20110083960(A) |
申请公布日期 |
2011.07.21 |
申请号 |
KR20100003957 |
申请日期 |
2010.01.15 |
申请人 |
KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE |
发明人 |
LEE, YOUNG KYU;LEE, CHANG BOK;YANG, SEONG HOON;LEE, SANG JEONG |
分类号 |
G01S1/20;G01S5/02 |
主分类号 |
G01S1/20 |
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