Next Article in Journal
Spatial Retrieval of Broadband Dielectric Spectra
Previous Article in Journal
Creating and Exploring Semantic Annotation for Behaviour Analysis
Open AccessArticle

Comparison of L1 and L5 Bands GNSS Signals Acquisition

1
LASSENA, École de Technologie Supérieure (ÉTS), 1100 Notre-Dame Street West, Montreal, QC H3C 1K3, Canada
2
Syderal, Neuenburgstrasse 7, 3238 Gals, Switzerland
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(9), 2779; https://doi.org/10.3390/s18092779
Received: 7 June 2018 / Revised: 20 August 2018 / Accepted: 20 August 2018 / Published: 23 August 2018
(This article belongs to the Section Physical Sensors)
Nowadays, 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. View Full-Text
Keywords: acquisition; complexity; Galileo; GPS; GNSS; hardware receiver acquisition; complexity; Galileo; GPS; GNSS; hardware receiver
Show Figures

Figure 1

MDPI and ACS Style

Leclère, J.; Landry, R., Jr.; Botteron, C. Comparison of L1 and L5 Bands GNSS Signals Acquisition. Sensors 2018, 18, 2779.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop