Matches in SemOpenAlex for { <https://semopenalex.org/work/W1569809359> ?p ?o ?g. }
Showing items 1 to 84 of
84
with 100 items per page.
- W1569809359 endingPage "737" @default.
- W1569809359 startingPage "731" @default.
- W1569809359 abstract "With the FCC E911 mandate, a new class of GPS applications has emerged as Wireless Aided GPS. In this case a handset position has to be determined quickly even in reception environments where a stand-alone GPS receiver usually does not operate. In particular, indoors positioning capabilities is a requirement. These applications have revived the interest in performance of GPS systems in cases where the Signal to Noise Ratio (SNR) is very low [1]. GPS signals are significantly attenuated due to foliage and buildings. In general the GPS signals inside buildings are at least 20 dB below their nominal levels as specified in the GPS ICD 200. It is well known that increasing the integration time during acquisition of GPS signalsimproves the sensitivity of the GPS acquisition. However it is not practicable to use very long integration times without GPS aiding as this leads to very long Time-to-Acquisition and consequently very long time to First Fix (TTFF). Even with sensitivity aid available, there is a theoretical limit to the expected improvements. This paper first discusses the theoretical limitations on use of very long integration times and then discusses the practical limitations on using long integration times in terms of acquisition performance. The effects of coherent and non-coherent integration on acquisition sensitivity is discussed along with the effects of signal movement. Simulation results are presented for acquisition performance under various signal scenarios." @default.
- W1569809359 created "2016-06-24" @default.
- W1569809359 creator A5035473017 @default.
- W1569809359 creator A5053230513 @default.
- W1569809359 date "2000-01-28" @default.
- W1569809359 modified "2023-09-24" @default.
- W1569809359 title "Acquisition of GPS Signals at Very Low Signal to Noise Ratio" @default.
- W1569809359 hasPublicationYear "2000" @default.
- W1569809359 type Work @default.
- W1569809359 sameAs 1569809359 @default.
- W1569809359 citedByCount "25" @default.
- W1569809359 countsByYear W15698093592012 @default.
- W1569809359 countsByYear W15698093592014 @default.
- W1569809359 countsByYear W15698093592017 @default.
- W1569809359 crossrefType "journal-article" @default.
- W1569809359 hasAuthorship W1569809359A5035473017 @default.
- W1569809359 hasAuthorship W1569809359A5053230513 @default.
- W1569809359 hasConcept C115961682 @default.
- W1569809359 hasConcept C127413603 @default.
- W1569809359 hasConcept C12957241 @default.
- W1569809359 hasConcept C154945302 @default.
- W1569809359 hasConcept C190234968 @default.
- W1569809359 hasConcept C193183557 @default.
- W1569809359 hasConcept C193648706 @default.
- W1569809359 hasConcept C198613851 @default.
- W1569809359 hasConcept C199360897 @default.
- W1569809359 hasConcept C21200559 @default.
- W1569809359 hasConcept C24326235 @default.
- W1569809359 hasConcept C2779843651 @default.
- W1569809359 hasConcept C2987779331 @default.
- W1569809359 hasConcept C41008148 @default.
- W1569809359 hasConcept C60229501 @default.
- W1569809359 hasConcept C76155785 @default.
- W1569809359 hasConcept C79403827 @default.
- W1569809359 hasConcept C80624579 @default.
- W1569809359 hasConcept C99498987 @default.
- W1569809359 hasConceptScore W1569809359C115961682 @default.
- W1569809359 hasConceptScore W1569809359C127413603 @default.
- W1569809359 hasConceptScore W1569809359C12957241 @default.
- W1569809359 hasConceptScore W1569809359C154945302 @default.
- W1569809359 hasConceptScore W1569809359C190234968 @default.
- W1569809359 hasConceptScore W1569809359C193183557 @default.
- W1569809359 hasConceptScore W1569809359C193648706 @default.
- W1569809359 hasConceptScore W1569809359C198613851 @default.
- W1569809359 hasConceptScore W1569809359C199360897 @default.
- W1569809359 hasConceptScore W1569809359C21200559 @default.
- W1569809359 hasConceptScore W1569809359C24326235 @default.
- W1569809359 hasConceptScore W1569809359C2779843651 @default.
- W1569809359 hasConceptScore W1569809359C2987779331 @default.
- W1569809359 hasConceptScore W1569809359C41008148 @default.
- W1569809359 hasConceptScore W1569809359C60229501 @default.
- W1569809359 hasConceptScore W1569809359C76155785 @default.
- W1569809359 hasConceptScore W1569809359C79403827 @default.
- W1569809359 hasConceptScore W1569809359C80624579 @default.
- W1569809359 hasConceptScore W1569809359C99498987 @default.
- W1569809359 hasLocation W15698093591 @default.
- W1569809359 hasOpenAccess W1569809359 @default.
- W1569809359 hasPrimaryLocation W15698093591 @default.
- W1569809359 hasRelatedWork W1946384890 @default.
- W1569809359 hasRelatedWork W1994641974 @default.
- W1569809359 hasRelatedWork W2604964131 @default.
- W1569809359 hasRelatedWork W777443077 @default.
- W1569809359 hasRelatedWork W838828506 @default.
- W1569809359 hasRelatedWork W1488611957 @default.
- W1569809359 hasRelatedWork W1498974538 @default.
- W1569809359 hasRelatedWork W1499650054 @default.
- W1569809359 hasRelatedWork W1901123773 @default.
- W1569809359 hasRelatedWork W1947142436 @default.
- W1569809359 hasRelatedWork W1962187186 @default.
- W1569809359 hasRelatedWork W2095673687 @default.
- W1569809359 hasRelatedWork W2107219734 @default.
- W1569809359 hasRelatedWork W2124567807 @default.
- W1569809359 hasRelatedWork W2128127941 @default.
- W1569809359 hasRelatedWork W2134970244 @default.
- W1569809359 hasRelatedWork W2141552951 @default.
- W1569809359 hasRelatedWork W2164207075 @default.
- W1569809359 hasRelatedWork W3100963252 @default.
- W1569809359 hasRelatedWork W943664859 @default.
- W1569809359 isParatext "false" @default.
- W1569809359 isRetracted "false" @default.
- W1569809359 magId "1569809359" @default.
- W1569809359 workType "article" @default.