Opportunities and Challenges for Multi-Constellation, Multi-Frequency Automotive GNSS Receivers

Mongrédien, Cécile; Rügamer, Alexander; Overbeck, Matthias; Rohmer, G.; Berglez, Philipp; Wasle, Elmar

doi:10.1007/978-3-642-23071-4_16

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…First, since we deduce and establish appropriate linear expression about several random variables of the ACF of sBOC (1,1) likelihood criterion is capable of achieving unambiguous acquisition of sBOC(1,1) signals with higher probability than 94%. Therefore, applying the maximum likelihood criterion for obtaining decision statistics is able to not only ensure the compatibility between BPSK and sBOC(1,1) signals but also reduce system complexity.…”

Section: Discussionmentioning

confidence: 99%

“…Global Navigation Satellite System (GNSS) receivers greatly benefit from the development of the GNSS [1], and now the GNSS includes four independent global constellations: Global Positioning System (GPS), GLObal NAvigation Satellite System (GLONASS), European GNSS (Galileo) and BeiDou Navigation Satellite System (BDS). In fact, these constellations keep enough available navigation satellites in view.…”

Section: Introductionmentioning

confidence: 99%

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An innovative FPGA‐based low‐complexity and multi‐constellations compatible GNSS acquisition scheme

Qiu

Wang

et al. 2021

IET Radar Sonar & Navi

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There is a strong demand for the multi-constellations compatible Global Navigation Satellite System (GNSS) acquisition scheme, since it is able to acquire signals from different constellations to increase availability of satellites. However, the presence of multiple modulation modes and diverse Pseudo-Random-Noise (PRN) code lengths makes the design challenging. Moreover, existing schemes consume a lot of hardware resources. Hence, we present an innovative Field Programmable Gate Array (FPGA)-based lowcomplexity and multi-constellation compatible GNSS acquisition scheme to provide a solution for the above-mentioned challenges. This scheme is based on the proposed Improved Serial-Parallel Matched Filter structure that not only requires less hardware resources than conventional structures but also performs all operations in a pipeline to simplify the implementation in FPGA. Additionally, the maximum likelihood criterion is used to obtain decision statistics, which ensures the compatibility between BPSK and sBOC (1,1) signals. Furthermore, a three-step method to acquire signals with a long PRN code is proposed. This also guarantees the compatibility among signals with different PRN code lengths. Finally, a new aided acquisition method to accelerate the acquisition process of signals with a long PRN code is proposed. Experimental results show this scheme is capable of acquiring multi-constellations civil GNSS signals, and therefore it has high practical value. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An innovative FPGA‐based low‐complexity and multi‐constellations compatible GNSS acquisition scheme

Qiu

Wang

et al. 2021

IET Radar Sonar & Navi

View full text Add to dashboard Cite

show abstract

“…Besides, the use of such signals in classical reception methods is unavoidable, since the number of available signals, which are then confined to a single constellation, is limited. The design of MC/MF-GNSS software and hardware defined receivers brings considerable advantages to Position Velocity and Time (PVT) calculator that can be summarized as follows [49], [50]:…”

Section: Principle Of the Proposed Methodsmentioning

confidence: 99%