GNSS software receiver - a versatile platform for navigation systems signals processing

Puričer, Pavel; Kovář, Pavel; Seidl, L.; Vejrazka, F.

doi:10.1109/elmar.2005.193690

Cited by 2 publications

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“…In Software Defined Radio (SDR), the components that have been traditionally implemented in hardware (such as mixers, filters and modulators) are instead implemented in software (computers or embedded systems) [178]. The SDN (Software-Defined Networking) implementations based on FPGA includes OFDM modulators [179][180][181][182][183], BPSK (Binary Phase Shift Keying) modulators [184,185], QPSK (Quadrature Phase Shift Keying) modulators [184,186], GNSS (Global Navigation Satellite System) and GPS (Global Positioning System) receivers [187][188][189][190], CDMA (Code-Division Multiple Access) [191] and QAM (Quadrature Amplitude Modulation) modulators [192,193]. Network on chip (NoC) is a paradigm which aims to solve the communication issues between the CPU units of the next generation of many core System on Chip (SoC).…”

Section: Networkingmentioning

confidence: 99%

Field Programmable Gate Array Applications—A Scientometric Review

2019

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Field Programmable Gate Array (FPGA) is a general purpose programmable logic device that can be configured by a customer after manufacturing to perform from a simple logic gate operations to complex systems on chip or even artificial intelligence systems. Scientific publications related to FPGA started in 1992 and, up to now, we found more than 70,000 documents in the two leading scientific databases (Scopus and Clarivative Web of Science). These publications show the vast range of applications based on FPGAs, from the new mechanism that enables the magnetic suspension system for the kilogram redefinition, to the Mars rovers’ navigation systems. This paper reviews the top FPGAs’ applications by a scientometric analysis in ScientoPy, covering publications related to FPGAs from 1992 to 2018. Here we found the top 150 applications that we divided into the following categories: digital control, communication interfaces, networking, computer security, cryptography techniques, machine learning, digital signal processing, image and video processing, big data, computer algorithms and other applications. Also, we present an evolution and trend analysis of the related applications.

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Section: Networkingmentioning

confidence: 99%

Field Programmable Gate Array Applications—A Scientometric Review

2019

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“…Some GNSS receivers are equipped with RTK, whereas others use the open source software RTKLIB [ 1 ], which is an RTK application that uses raw data from receiver, to estimate RTK. In other cases, RTK is performed by a software receiver using an RF recorder [ 9 , 10 ]. RTK uses the carrier phase transmitted from the satellite to estimate the position.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Reliability Determination Performance of Real Time Kinematic Solutions Using Height Trajectory

Takanose

Atsumi

Takikawa

et al. 2021

Sensors

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Autonomous driving support systems and self-driving cars require the determination of reliable vehicle positions with high accuracy. The real time kinematic (RTK) algorithm with global navigation satellite system (GNSS) is generally employed to obtain highly accurate position information. Because RTK can estimate the fix solution, which is a centimeter-level positioning solution, it is also used as an indicator of the position reliability. However, in urban areas, the degradation of the GNSS signal environment poses a challenge. Multipath noise caused by surrounding tall buildings degrades the positioning accuracy. This leads to large errors in the fix solution, which is used as a measure of reliability. We propose a novel position reliability estimation method by considering two factors; one is that GNSS errors are more likely to occur in the height than in the plane direction; the other is that the height variation of the actual vehicle travel path is small compared to the amount of movement in the horizontal directions. Based on these considerations, we proposed a method to detect a reliable fix solution by estimating the height variation during driving. To verify the effectiveness of the proposed method, an evaluation test was conducted in an urban area of Tokyo. According to the evaluation test, a reliability judgment rate of 99% was achieved in an urban environment, and a plane accuracy of less than 0.3 m in RMS was achieved. The results indicate that the accuracy of the proposed method is higher than that of the conventional fix solution, demonstratingits effectiveness.

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GNSS software receiver - a versatile platform for navigation systems signals processing

Cited by 2 publications

References 0 publications

Field Programmable Gate Array Applications—A Scientometric Review

Field Programmable Gate Array Applications—A Scientometric Review

Improvement of Reliability Determination Performance of Real Time Kinematic Solutions Using Height Trajectory

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