Tiira: an Open-Source Hardware-based GNSS Receiver and Multi-sensor Navigation System

Daniel, Ondrej; Pfleger, Michal; Jenik, Vojtech; Talyzin, Vladimir; Kost, Oliver; Duník, Jindřich

doi:10.1109/navitec53682.2022.9847549

Cited by 2 publications

(5 citation statements)

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“…We have summarized examples of such in a previous work [ 9 ]. However, all previous implementations focus on real-time processing and, therefore, use FPGAs for hardware acceleration (e.g., GNSS-SDR [ 6 ], Tiira [ 30 ]). We take a different approach and propose to review the applicability of reconfigurable platforms like FPGAs for power estimation and benchmarking.…”

Section: Background and Motivationmentioning

confidence: 99%

Hard SyDR: A Benchmarking Environment for Global Navigation Satellite System Algorithms

Grenier,

Lei,

Damsgaard

et al. 2024

Sensors

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A Global Navigation Satellite System (GNSS) is widely used today for both positioning and timing purposes. Many distinct receiver chips are available as Application-Specific Integrated Circuit (ASIC)s off-the-shelf, each tailored to the requirements of various applications. These chips deliver good performance and low energy consumption but offer customers little-to-no transparency about their internal features. This prevents modification, research in GNSS processing chain enhancement (e.g., application of Approximate Computing (AxC) techniques), and design space exploration to find the optimal receiver for a use case. In this paper, we review the GNSS processing chain using SyDR, our open-source GNSS Software-Defined Radio (SDR) designed for algorithm benchmarking, and highlight the limitations of a software-only environment. In return, we propose an evolution to our system, called Hard SyDR to become closer to the hardware layer and access new Key Performance Indicator (KPI)s, such as power/energy consumption and resource utilization. We use High-Level Synthesis (HLS) and the PYNQ platform to ease our development process and provide an overview of their advantages/limitations in our project. Finally, we evaluate the foreseen developments, including how this work can serve as the foundation for an exploration of AxC techniques in future low-power GNSS receivers.

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Section: Background and Motivationmentioning

confidence: 99%

Hard SyDR: A Benchmarking Environment for Global Navigation Satellite System Algorithms

Grenier,

Lei,

Damsgaard

et al. 2024

Sensors

View full text Add to dashboard Cite

show abstract

“…Recently, an open hardware GNSS receiver called "Tiira" has been proposed by [27]. The goal is to provide a complete environment for algorithm developments with control over the whole processing chain.…”

Section: B Review Of Open-source Sdr Solutionsmentioning

confidence: 99%

“…While Matlab is used widely for its readability and easy programming development, Python offers similar advantages without requiring any licensing. Moreover, the current trends in programming have rendered Python quite versatile and efficient, leading to broad usage in research and industry, as seen, for example, in Tiira [27]. Python can also easily integrate low-level languages, which is interesting for the second development phase.…”

Section: Development Phasesmentioning

confidence: 99%

“…Compiled languages similar to C/C++ are reviewed for this phase's development. In [27], Rust was selected to develop the Tiira receiver's low-level part. It also answers our requirements on open code and aligns with current coding trends.…”

Section: Development Phasesmentioning

confidence: 99%

“…Energy consumption translation from FPGA to ASIC hardware is possible, as shown in [32]. Such a solution was chosen for implementing the Tiira receiver [27], using both a CPU FPGA processor unit in the Xilinx ZYNQ board. A similar implementation is foreseen for this development phase on both simulated and physical hardware.…”

Section: Development Phasesmentioning

confidence: 99%

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An Open-Source Software-Defined Receiver for GNSS Algorithms Benchmarking

Grenier

Lohan

Ometov

et al. 2022

2022 14th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)

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The development of new processing algorithms has always been at the centre of satellite navigation research, aiming to minimize complexity and maximize the quality of the results. Often, these two objectives cannot be achieved simultaneously; thus, identifying the necessary trade-offs are required. Over the last decade, the development of new GNSS constellations offering modernized signals at the cost of higher decoding complexity has led to many new algorithms proposals to decode these signals.Yet, the current research environment suffers from several flaws, namely a lack of interoperability and comparability between algorithms that do not allow a fair comparison between each proposal. Such a problem is the consequence of a lack of open-source solutions, leading to individual in-house software development and dataset acquisition. To address it, we postulate the need to develop an open-source research platform providing common software and reference datasets dedicated to specific environments and user scenarios. We present the current development status and provide a discussion on future developments.

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Tiira: an Open-Source Hardware-based GNSS Receiver and Multi-sensor Navigation System

Cited by 2 publications

References 5 publications

Hard SyDR: A Benchmarking Environment for Global Navigation Satellite System Algorithms

Hard SyDR: A Benchmarking Environment for Global Navigation Satellite System Algorithms

An Open-Source Software-Defined Receiver for GNSS Algorithms Benchmarking

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