详情

原文传递 Common-View LORAN-C as a Backup to GPS for Precise Time Recovery

题名：	Common-View LORAN-C as a Backup to GPS for Precise Time Recovery
作者：	Lombardi, Michael;Biggs, Casey;Celano, Tom;
关键词：	NAVIGATIONAL AIDS, COMPUTER PROGRAMS, SOFTWARE ENGINEERING, FAR FIELD, TARGETS, GLOBAL POSITIONING SYSTEM, SAFETY, NEAR FIELD, COAST GUARD, LORAN, MICROSECOND TIME, SOFTWARE TOOLS.
摘要：	The LORAN-C network is being recapitalized to serve as a backup to GPS for navigation and timing. LORAN-C is being investigated as a precision (sub 100 ns) time recovery system for use in the continental United States. Traditionally, LORAN-C time recovery has been limited by propagation effects (both spatial and temporal) to provide time recovery in the microsecond range. By employing common-view techniques long used in GPS, the potential exists to enhance time recovery performance by over an order of magnitude using LORAN-C. The LORAN-C Accuracy Panel (run by the US Coast Guard) has sponsored a research project to collect data and determine the performance level for time recovery using common-view LORAN-C. This paper presents the results of that work. This paper begins with a short overview of the LORAN-C recapitalization project, with an emphasis on timing enhancements at the transmitting stations. A description of the commonview LORAN-C test network follows. Data collected in Boulder will be corrected via commonview using a near field station and a far field station. Results will be analyzed to determine the dependence of time recovery precision on distance.
总页数：	13
报告类型：	科技报告