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Odziv geodetskih instrumentov GNSS na motenje z oddajnikom preletnega signala L1 = Operation of geodetic GNSS instruments under chirp signal L1 jammingDimc, Franc ; Pavlovčič Prešeren, Polona, geodezija ; Bažec, Matej, 1976-V prispevku predstavljamo rezultate testa ranljivosti geodetskih sprejemnikov GNSS ob namernem motenju signala v frekvenčnem področju L1 tehnologije GPS (angl. Global Positioning System). Preizkusili ... smo odziv devetih sprejemnikov GNSS različnih proizvajalcev, in sicer Leica Geosystems AG, Trimble Inc. in Javad GNSS Inc. Praktični preizkus je bil zasnovan na statičnih in kinematičnih motnjah signalov. Statične motnje z mirujočim motilnikom na različnih oddaljenostih od sprejemnikov (od 10 do 160 metrov) so trajale večkrat zaporedoma po tri minute. Za kratkotrajne kinematične motnje smo namestili motilnik v vozilo, ki se je testnemu območju približevalo z različnimi hitrostmi. Analiza različnih scenarijev je pokazala, da so motilniki v nekaterih situacijah onemogočili sprejem signalov s satelitov GPS, medtem ko so se sprejemniki na motnje signalov GLONASS odzvali različno. Ker med meritvami julija 2019 Galileo ni deloval kot predvideno, smo v študijo vključili le GPS in GLONASS. Geodetski instrumenti GNSS so se na motenje signala odzvali z zmanjšanjem razmerja med signalom in šumom (angl. signal-to-noise ratio % SNR) in bodisi s popolno nezmožnostjo določitve položaja bodisi z nepravilnim izračunom faznih neznank (inicializacijo) ter posledično nepravilno določitvijo položaja. Vzrok popolne nezmožnosti sprejema signala najbolj pripisujemo bližini motilnika, za nepravilno kodno in/ali fazno določitev položaja pa tudi trajanju motenja.Source: Geodetski vestnik : glasilo Zveze geodetov Slovenije = Journal of the Association of Surveyors of Slovenia. - ISSN 0351-0271 (Letn. 65, št. 2, 2021, str. 189-204)Type of material - article, component partPublish date - 2021Language - slovenianCOBISS.SI-ID - 69437443
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source: Geodetski vestnik : glasilo Zveze geodetov Slovenije = Journal of the Association of Surveyors of Slovenia. - ISSN 0351-0271 (Letn. 65, št. 2, 2021, str. 189-204)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Dimc, Franc | 14414 |
Pavlovčič Prešeren, Polona, geodezija | 19585 |
Bažec, Matej, 1976- | 21506 |
Source: Personal bibliographies
and: SICRIS
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