NDLI: Analysis of GPS and Loran-C performance for land vehicle navigation in the Canadian Rockies

Content Provider	IEEE Xplore Digital Library
Author	Lachapelle, G. Townsend, B. Halayko, D.
Copyright Year	1992
Description	Author affiliation: Dept. of Surveying Eng., Calgary Univ., Alta., Canada (Lachapelle, G.; Townsend, B.)
Abstract	Loran-C and GPS (Global Positioning System) were assessed for vehicular navigation along selected roads of British Columbia during the winter of 1991. The general topography of this mountainous area is described, together with the specific topographic features and tree coverage characteristics of the 2000 km of roads tested on the mainland and on Vancouver Island. The configuration and characteristics of the Loran-C Canadian West Coast chain along the roads used are described. The portable vehicle-mounted LORCAL (Loran Calibration at the University of Calgary) system used to collect and analyze the Loran-C and GPS signals along road profiles is described. The performance of Loran-C is analyzed in terms of signal to noise ratios, field strength, and time difference distortions, as measured by differential GPS. These distortions, which can reach several hundred meters over distances of less than 20 km, are analyzed in terms of topographic features. The possibility of using these time-independent distortions to calibrate Loran-C for use along the above roads is discussed. Masking of GPS signals due to topographic features and tree coverage along the roads is analyzed. A comparative analysis of Loran-C and GPS is presented in terms of signal availability and accuracy.
Starting Page	504
Ending Page	508
File Size	303734
Page Count	5
File Format	PDF
ISBN	0780304683
DOI	10.1109/PLANS.1992.185894
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-03-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance analysis Global Positioning System Land vehicles Navigation Roads Signal analysis Distortion measurement Surfaces Testing Calibration
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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