FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3094409898> ?p ?o ?g. }

• W3094409898 abstract "Position estimation of the target is essential in all fields- agriculture, forestry, defense, aviation, remote sensing, communication, maritime and shipping, navigation, railways, road transport and safety, urban planning and development, land survey, and climate study, etc. While the accurate position is the most important aspect of remote sensing, the attainment of it is a challenge. In navigation systems, the error in position estimation occurs due to various factors, viz. the presence of electrons in the ionosphere, the satellite and receiver clock offset, multipath effect, the non-uniform refractive index of the troposphere, the error due to PRN code noise and noise within the receiver, and errors in the ephemeris data, to name a few. In this paper, the authors have attempted to give an account of precision of position estimation by the Indian Regional Navigation Satellite System (IRNSS), by estimating the total slant delay caused to the satellite signal. The total slant delay (TSD) in the troposphere is caused due to the change in refractive index in the troposphere. The non-uniform refractive index is caused due to variation in temperature, pressure, and water vapor present in the troposphere. The non-uniform refractive index causes the refraction of the signal causing bending and slowing. The paper presents the diurnal, daily, and monthly variations of total slant delay (TSD) over a few tropical locations in India, namely Bhubaneswar (20.14°N, 85.67°E), Gandaki (13.45°N, 79.16°E), Goa (15.45°N, 73.81°E), Kanakapura (12.54°N, 77.429°E), and Kolkata (22.53°N, 88.33°E). In an attempt to find out the factors that govern the TSD, in this paper, the authors have analyzed a few meteorological elements, viz. the surface pressure (SP), surface temperature (ST), relative humidity (RH), and integrated precipitable water (IPWV). They have also studied the dependence of TSD on the total solar irradiance (TSI). The study reveals that the TSD follows the solar cycle. Besides, the study further shows the relationship between the TSD and the meteorological elements mentioned above. The investigation shows that the total slant delay (TSD) retrieved from the different satellites in the IRNSS constellation is different. Thus, for accurate position estimation of the target, it is necessary to take an average of TSD estimated by all the satellites. The diurnal variation of TSD shows that in a month, every day its crests occur at regular intervals. The troughs of TSD also recur after a fixed interval. The periodicity of the crests and troughs is uniform throughout a particular month, i.e. the crests occur exactly at the same time every day at regular intervals; so also the troughs. This observation led the authors to investigate the solar cycle. The study reveals that both TSD and total solar irradiance replicates each other. The study also indicates that total slant delay decreases as the elevation of the satellite w.r.t. the Earth’s station increases." @default.
• W3094409898 created "2020-10-29" @default.
• W3094409898 creator A5018980246 @default.
• W3094409898 creator A5037628627 @default.
• W3094409898 creator A5051249948 @default.
• W3094409898 creator A5066224627 @default.
• W3094409898 date "2020-09-20" @default.
• W3094409898 modified "2023-10-17" @default.
• W3094409898 title "Study of tropospheric slant delay retrieved from the IRNSS" @default.
• W3094409898 cites W1984123740 @default.
• W3094409898 cites W2042435616 @default.
• W3094409898 cites W2112306707 @default.
• W3094409898 cites W2119486063 @default.
• W3094409898 cites W2286746362 @default.
• W3094409898 cites W2733563339 @default.
• W3094409898 cites W2740771913 @default.
• W3094409898 cites W3192407497 @default.
• W3094409898 doi "https://doi.org/10.1117/12.2573690" @default.
• W3094409898 hasPublicationYear "2020" @default.
• W3094409898 type Work @default.
• W3094409898 sameAs 3094409898 @default.
• W3094409898 citedByCount "0" @default.
• W3094409898 crossrefType "proceedings-article" @default.
• W3094409898 hasAuthorship W3094409898A5018980246 @default.
• W3094409898 hasAuthorship W3094409898A5037628627 @default.
• W3094409898 hasAuthorship W3094409898A5051249948 @default.
• W3094409898 hasAuthorship W3094409898A5066224627 @default.
• W3094409898 hasConcept C121332964 @default.
• W3094409898 hasConcept C127313418 @default.
• W3094409898 hasConcept C127413603 @default.
• W3094409898 hasConcept C14279187 @default.
• W3094409898 hasConcept C146978453 @default.
• W3094409898 hasConcept C153294291 @default.
• W3094409898 hasConcept C19269812 @default.
• W3094409898 hasConcept C2778027091 @default.
• W3094409898 hasConcept C39432304 @default.
• W3094409898 hasConcept C41008148 @default.
• W3094409898 hasConcept C60229501 @default.
• W3094409898 hasConcept C62649853 @default.
• W3094409898 hasConcept C76155785 @default.
• W3094409898 hasConcept C9075549 @default.
• W3094409898 hasConceptScore W3094409898C121332964 @default.
• W3094409898 hasConceptScore W3094409898C127313418 @default.
• W3094409898 hasConceptScore W3094409898C127413603 @default.
• W3094409898 hasConceptScore W3094409898C14279187 @default.
• W3094409898 hasConceptScore W3094409898C146978453 @default.
• W3094409898 hasConceptScore W3094409898C153294291 @default.
• W3094409898 hasConceptScore W3094409898C19269812 @default.
• W3094409898 hasConceptScore W3094409898C2778027091 @default.
• W3094409898 hasConceptScore W3094409898C39432304 @default.
• W3094409898 hasConceptScore W3094409898C41008148 @default.
• W3094409898 hasConceptScore W3094409898C60229501 @default.
• W3094409898 hasConceptScore W3094409898C62649853 @default.
• W3094409898 hasConceptScore W3094409898C76155785 @default.
• W3094409898 hasConceptScore W3094409898C9075549 @default.
• W3094409898 hasLocation W30944098981 @default.
• W3094409898 hasOpenAccess W3094409898 @default.
• W3094409898 hasPrimaryLocation W30944098981 @default.
• W3094409898 hasRelatedWork W1660767182 @default.
• W3094409898 hasRelatedWork W1974250593 @default.
• W3094409898 hasRelatedWork W1974870221 @default.
• W3094409898 hasRelatedWork W1977873540 @default.
• W3094409898 hasRelatedWork W1994266434 @default.
• W3094409898 hasRelatedWork W2018057559 @default.
• W3094409898 hasRelatedWork W2085322521 @default.
• W3094409898 hasRelatedWork W2106604460 @default.
• W3094409898 hasRelatedWork W3162875150 @default.
• W3094409898 hasRelatedWork W2142539838 @default.
• W3094409898 isParatext "false" @default.
• W3094409898 isRetracted "false" @default.
• W3094409898 magId "3094409898" @default.
• W3094409898 workType "article" @default.