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原文传递 Loran-C Augmentation for GPS and GPS/WAAS. Final rept.

题名：	Loran-C Augmentation for GPS and GPS/WAAS. Final rept.
作者：	Lilley-R.W.; Krik-J.G.
关键词：	Loran-C; Global-positioning-system; *Navigation-systems.;National-Airspace-System; Approach-; Airborne-radar-approach; Accuracy-; Antennae-.
摘要：	Illgen Simulation Technologies, Inc., (ISTI) participated in Loran-C and other navigational programs for the Federal Aviation Administration (FAA) and other governmental agencies for some fifteen years. The Cooperative Agreement reported here was carried out in support of the evaluation of the Loran-C navigational system as a partner for GPS systems in the National Airspace System (NAS), with recognition that other navigational and precise-timing applications exist. In December, 2003, ISTI was acquired by Northrop Grumman Corporation and was renamed Northrop Grumman Simulation Technologies Corp. (NGST). There were no personnel changes of significance to this cooperative agreement as a result of the acquisition. ISTI/NGST cooperated within a large and diverse team assembled by the FAA offering expertise in specific Loran-C-related areas. In 1997, ISTI personnel assisted the FAA in forming what is now the Loran-C Evaluation Program. Working with AND-740 at program inception and prior to initiation of Cooperative Agreement 99-G-038, hypotheses were formulated, and these are still pertinent today: Program Hypotheses Loran-C meets the requirements to support NAS operations including non-precision or LNAV/VNAV approach procedures. Loss of availability due to p-static no longer expected to be a significant factor Loran-C meets RNP 0.3 requirements accuracy, availability, integrity, continuity Advantages of a GPS/Loran-C combination are demonstrated in flight Availability of horizontal nav with integrity through approach if GPS is lost Ability to dispatch in the absence of onboard GPS capability CONUS and Alaska demonstrations show utility of Loran-C Coverage improvements for enroute navigation through NPA Augmentation of WAAS communication of GPS integrity Loran-C communication of Loran-C integrity, timing, control information Loran and Loran/GPS hybrids can be certified, and have NAS benefits RTCA, FAA documents, ops concepts.
报告类型：	科技报告