000264860 001__ 264860
000264860 005__ 20190619220211.0
000264860 0247_ $$2doi$$a10.3390/s18092779
000264860 02470 $$a10.3390/s18092779$$2DOI
000264860 037__ $$aARTICLE
000264860 245__ $$aComparison of L1 and L5 Bands GNSS Signals Acquisition
000264860 260__ $$c2018
000264860 269__ $$a2018
000264860 336__ $$aJournal Articles
000264860 520__ $$aNowadays, civil Global Navigation Satellite System (GNSS) signals are available in both L1 and L5 bands. A receiver does not need to acquire independently the signals in both bands coming from a same satellite, since their carrier Doppler and code delay are closely related. Therefore, the question of which one to acquire first rises naturally. Although the common thought would tell the L1 band signals which are narrowband, an accurate comparison has never been done, and the decision is not as easy as it seems. Indeed, L5 band signals have several advantages such as stronger power, lower carrier Doppler, or a pilot channel, unlike the Global Positioning System (GPS) L1 C/A signal. The goal of this paper is therefore to compare the acquisition of L1 and L5 bands signals (GPS L1 C/A and L5, Galileo E1 and E5a/b) to determine which one is more complex and by which factor, in terms of processing time and memory, considering hardware receivers and the parallel code search. The results show that overall the L5 band signals are more complex to acquire, but it depends strongly on the conditions. The E5 signal is always more complex to acquire than E1, while the L5 signal can have a complexity close to the L1 C/A in some cases. Moreover, precise assistance providing accurate Doppler could significantly reduce the L5 complexity below the L1 complexity.
000264860 6531_ $$aacquisition
000264860 6531_ $$acomplexity
000264860 6531_ $$aGalileo
000264860 6531_ $$aGPS
000264860 6531_ $$aGNSS
000264860 6531_ $$ahardware receiver
000264860 700__ $$aLeclère, Jérôme
000264860 700__ $$aLandry Jr., René
000264860 700__ $$aBotteron, Cyril$$0243672$$g190010
000264860 773__ $$tSensors$$j18$$k9$$q2779
000264860 790__ $$whttps://www.mdpi.com/1424-8220/18/9/2779/htm$$2url
000264860 8560_ $$fbeatrice.marselli@epfl.ch
000264860 909C0 $$yApproved$$pESPLAB$$xU11964$$mbeatrice.marselli@epfl.ch$$zMarselli, Béatrice$$0252263
000264860 909CO $$ooai:infoscience.epfl.ch:264860$$particle$$pSTI
000264860 960__ $$acyril.botteron@epfl.ch
000264860 961__ $$apierre.devaud@epfl.ch
000264860 973__ $$aEPFL$$sPUBLISHED$$rREVIEWED
000264860 980__ $$aARTICLE
000264860 981__ $$aoverwrite