GPS与Loran-C在城市和山区的车载导航

Proceedings of VNIS '93 - Vehicle Navigation and Information Systems Conference Pub Date : 1993-10-12 DOI:10.1109/VNIS.1993.585669

G. Lachapelle, B. Townsend, H. Gehue, M. Cannon

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引用次数: 7

摘要

综述了全球定位系统(GPS)和罗兰- c (LF)导航系统的主要特点，重点介绍了车载导航的应用。讨论了GPS视距要求和Loran-C信号干扰与衰减对城市和山区GPS视距要求的影响。利用GPS和Loran-C信号统计量，给出了足以满足HDOP < 5的二维定位的独立GPS和Loran-C信号可用性统计量。在卡尔加里，GPS的可用性比Loran-C更好。这归功于一个接近完整的卫星星座和使用快速信号采集GPS接收器。集成GPS/Loran-C的使用只提高了几个百分点的GPS可用性。在山区，使用综合系统将可用性提高到95%，而GPS为65%，多链罗兰-c为75%。

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GPS versus Loran-C for vehicular navigation in urban and mountainous areas

The main characteristics of both Global Positioning System (GPS) and Loran-C (LF) navigation systems are reviewed, with emphasis on vehicular navigation applications. The effects of the GPS line-of-sight requirement and Loran-C signal interference and attenuation in urban and mountainous areas are discussed. Unaided GPS and Loran-C signal availability statistics sufficient for 2D positioning with HDOP < 5 are presented using GPS and Loran-C signal statistics. In Calgary, GPS availability is found to be better than Loran-C. This is attributed to a near complete satellite constellation and to the use of a fast signal acquisition GPS receiver. The use of integrated GPS/Loran-C improve GPS availability by only a few percent. In the mountains, the use of an integrated system increases availability to 95% as compared to 65% for GPS and 75% for multi-chain Loran-C.

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Proceedings of VNIS '93 - Vehicle Navigation and Information Systems Conference

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