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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    Title :

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


    Contributors:
    Lachapelle, G. (author) / Townsend, B. (author) / Gehue, H. (author) / Cannon, M.E. (author)


    Publication date :

    1993-01-01


    Size :

    368963 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    GPS versus Loran-C for Vehicular Navigation in Urban and Mountainous Areas

    Lachapelle, G. / Townsend, B. / Gehue, H. et al. | British Library Conference Proceedings | 1993



    GPS/Loran-C: An Effective System Mix for Vehicular Navigation in Mountainous Areas

    Lachapelle, G. / Townsend, B. | British Library Online Contents | 1993