Title :
Accuracy Improvement Technique for Timing Application of LORAN-C Signal
Author :
Yang, Sung Hoon ; Lee, Chang Bok ; Lee, Young Kyu ; Lee, Jong Koo ; Kim, Young Jae ; Lee, Sang Jeong
Author_Institution :
Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea
fDate :
7/1/2011 12:00:00 AM
Abstract :
In this paper, we describe a performance improvement method of the long-range navigation (LORAN) system in the field of the accurate timing applications by compensating diurnal variations. The diurnal variations in the received LORAN-C timing data can be effectively reduced by using the correlation between the LORAN-C and the temperature with/without humidity data. For achieving the timing accuracy improvement, we estimated the correlation values, and by using the estimated values, we compensated the diurnal variations. It is observed that more than 30% performance improvement in the aspect of RMS values can be achieved when the smoothing intervals are more than 30 min.
Keywords :
correlation methods; mean square error methods; radionavigation; radiowave propagation; smoothing methods; LORAN system; LORAN-C signal; LORAN-C timing data; RMS value; accuracy improvement technique; accurate timing application; correlation value; diurnal variation; humidity data; long-range navigation; propagation time delay; smoothing interval; temperature; terrestrial radio navigation; timing accuracy improvement; value estimation; Correlation; Humidity; Smoothing methods; Temperature distribution; Temperature measurement; Timing; Additional secondary factor (ASF); LORAN-C; propagation time delay; time transfer; timing;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2010.2096970
