2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)
Real-time monitoring of chronic diseases such as cardiovascular diseases (CVDs) requires biopoten... more Real-time monitoring of chronic diseases such as cardiovascular diseases (CVDs) requires biopotential electrodes functioning over a long period without degrading recorded ECG signal quality. However, conventional conductive gel-based Ag/AgCl electrodes dehydrate over time gradually deteriorating the signal quality. Here, we fabricated graphene-based flexible textile electrodes for biosignal detection suitable for wearable devices. These electrodes are highly conductive and establish a low impedance contact with the skin. The recorded ECG signal signal-to-noise ratio (SNR) reaches up to 39.3 dB, 58% higher than the commercial Ag/AgCl electrode. The produced electrodes are flexible, therefore, adhere better to the skin at different anatomical positions of the body. Finally, the superhydrophobic property allows them to be used repeatedly after washing without compromising the quality of the ECG signal.
Aluminum bars are structural elements widely used in many application fields (industrial, aerospa... more Aluminum bars are structural elements widely used in many application fields (industrial, aerospace, naval, automotive, etc.). For the security and reliability of the structures in which they are used, it is very important to detect possible defects before using them or during their operating life. The Ultrasonic Non-Destructive Testing (US-NDT) seems to be very attractive as a diagnostic solution both for the initial and during the in-use inspections. In the literature, there are many instrumental solutions that differ with regard to the type of ultrasonic excitation signal, the adopted signal filtering and the implemented diagnostic algorithm. In this paper, an experimental comparison of various US-NDT excitation, filtering and diagnostic techniques is proposed, with the aim of identifying a suitable combination of such solutions that allows the best defect detection and localization capability. The experimental analysis was carried out on several specimens of aluminum bars with known defects (thin crack and corrosive defects). The obtained results show that the reliability of the defect diagnosis is strictly related both to the combinations of excitation, conditioning and processing methods implemented and to the type of the defect and its position respect to the inspection instrument.
In the field of Ultrasonic Non Destructive Testing (US-NDT) applied to the defect investigation o... more In the field of Ultrasonic Non Destructive Testing (US-NDT) applied to the defect investigation of aluminum bar for aerospace application, a number of solutions based on different signals generation, conditioning and data processing were proposed in literature. In this paper, a performance analysis of the US-NDT is proposed with the aim to obtain a suitable combination of such solutions that allow the best defect detection capability. The analysis was experimentally performed on two aluminum bars with two different cracks: the former generated by a fatigue process and the latter caused by a corrosive process. The results obtained with reference to different types of excitation signal and various methods of analyzing the acquired data are detailed.
Abstract The paper proposes the development, the analysis, and the experimental validation of a n... more Abstract The paper proposes the development, the analysis, and the experimental validation of a novel probe for Eddy Current (EC) Non-Destructive Testing especially thought to warrant good signal to noise ratios in the detection of thin defects when low excitation currents are adopted and whatever the orientation of the probe respect to the orientation of the defect. The probe is based on a simple double coil excitation, that generate a single direction EC flow, and adopts three magnetic sensors that form a triaxial magnetic sensor. Other main contributions of this paper are: i) performance analysis of an EC triaxial probe carried out in simulation environment that considers the measurement uncertainty of the magnetic sensors; ii) an experimental campaign that allow evaluating the performance of the realized probe; iii) a comparison between simulated and experimental results that prove the goodness of the proposed approach.
The paper proposes the realization and the preliminary characterization of a short-range localiza... more The paper proposes the realization and the preliminary characterization of a short-range localization systems based on the measurement of magnetic fields. Fixed anchors that generate sinusoidal wave magnetic fields at different frequencies and mobile anchors that measure the received magnetic field values compose the system. Main topics faced in the paper are: the realization and the preliminary characterization of threedimensional magnetic field sensors based on the suitable arrangement of single axis TMR magnetic sensors and the proposal of a novel, scalable and flexible localization setup allowing multiple mobile agents without increasing the complexity and the operational time of the system. Thanks to the low cost and the flexibility of the proposal, the realized system has a wide impact on the possible applications in industrial, medical and smart-life fields. For example, it can be adopted in localization of probes that execute the defect detection in specimen, in the realization of low cost devices that help in recognizing the health-state of peoples affected by motor problems related to neurological diseases, in application related to the virtual reality, etc. At this stage, the obtained results place the measurement accuracy lower than 1 cm when the localization range is a cube of 30 cm.
IEEE Transactions on Instrumentation and Measurement, 2022
Localizing objects in indoor environments with anchor-based systems poses several challenges to b... more Localizing objects in indoor environments with anchor-based systems poses several challenges to be faced. The main one is the design phase. What is the minimum number of anchors to be adopted? What is the optimal placement of the anchors in the operating domain? These are typical issues that need to be solved in this stage. Such issue is generally addressed by several experimental tests, imposing high costs both in the required large amounts of time and in the use of devices. In addition, sometimes the experiments will not warrant to identify the optimal design solution. In this work, a black-box design tool is proposed, able to manage different environments, in terms of domain size, maximum number of available anchors, device metrological features, and target performance. Such an approach, to be effective, needs a preliminary validation versus experimental results to make the future performance predictions reliable and avoid unexpected localization accuracy degradation. For this reason, the presented work adopts a side-by-side development, by evaluating results' compatibility, in static and dynamic contexts, before addressing further and more complex analyses relying on the design tool only. Such a comparison proves the goodness of the developed design tool, and the outcomes allow an accurate localization system design by finding anchors' placement solutions with the minimum computational burden.
Localization in indoor environments is a hard task because of several constraints, both in terms ... more Localization in indoor environments is a hard task because of several constraints, both in terms of multiple reflections due to wall and people moving around the localization domain. This is especially due to the communication technologies adopted to perform both ranging and positioning. In this paper, a Ultra Wide Band technology is adopted to perform localization in indoor environment, considering a square domain, by means of three fixed anchors and one mobile node. In specific applications, the object to localize is covered by a metallic shield, e.g, robots, and the localization sensor must be embedded inside the object. In this scenario, the paper proposes to solve three issues: assess nominal performance of UWB localization technology, find a way to approach it in harsh conditions, as the one above specified and a further investigation on optimal anchors' positions in the localization domain to verify sensitivity to specific set-up arrangement. First task is accomplished through an extensive measurement campaign without any obstacle; second one is solved by means of a double calibration procedure estimating anchor-to-anchor distance and online correcting the acquired data. A simulated approach that, starting from on-field measurements, verifies the role of different anchors' positions on the positioning error, completes the investigation.
IEEE Transactions on Instrumentation and Measurement
Localizing objects in indoor environments with anchor-based systems poses several challenges to b... more Localizing objects in indoor environments with anchor-based systems poses several challenges to be faced. The main one is the design phase. What is the minimum number of anchors to be adopted? What is the optimal placement of the anchors in the operating domain? These are typical issues that need to be solved in this stage. Such issue is generally addressed by several experimental tests, imposing high costs both in the required large amounts of time and in the use of devices. In addition, sometimes the experiments will not warrant to identify the optimal design solution. In this work, a black-box design tool is proposed, able to manage different environments, in terms of domain size, maximum number of available anchors, device metrological features, and target performance. Such an approach, to be effective, needs a preliminary validation versus experimental results to make the future performance predictions reliable and avoid unexpected localization accuracy degradation. For this reason, the presented work adopts a side-by-side development, by evaluating results' compatibility, in static and dynamic contexts, before addressing further and more complex analyses relying on the design tool only. Such a comparison proves the goodness of the developed design tool, and the outcomes allow an accurate localization system design by finding anchors' placement solutions with the minimum computational burden.
Fast detection and reconstruction of defect geometry is one of the main goals of ECT. Inversion o... more Fast detection and reconstruction of defect geometry is one of the main goals of ECT. Inversion of ECT data usually requires high-computational time and resources, hampering the application in on-line or in-situ inspections. In [1-2], it was hypothesized that defects' patterns in 2D ECT images can be modelled as a 2D convolution between defects' geometrical shape and a Hermite-Gauss (HG) mode function, which depends on the sensor. By knowing the mode function of a given sensor, it is possible to exploit image deconvolution to increase the SNR of detection and for a fast estimate of the defect shape and dimensions. To do a further step in this direction, in this work various sensors, excitation strategies and analysis methods were used to test a benchmark sample containing known defects. It was confirmed that for all the various configurations, 2D images in time- or frequency- domain are well described by the HG hypothesis.
2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2020
The paper proposes the realization and the preliminary characterization of a short-range localiza... more The paper proposes the realization and the preliminary characterization of a short-range localization systems based on the measurement of magnetic fields. Fixed anchors that generate sinusoidal wave magnetic fields at different frequencies and mobile anchors that measure the received magnetic field values compose the system. Main topics faced in the paper are: the realization and the preliminary characterization of threedimensional magnetic field sensors based on the suitable arrangement of single axis TMR magnetic sensors and the proposal of a novel, scalable and flexible localization setup allowing multiple mobile agents without increasing the complexity and the operational time of the system. Thanks to the low cost and the flexibility of the proposal, the realized system has a wide impact on the possible applications in industrial, medical and smart-life fields. For example, it can be adopted in localization of probes that execute the defect detection in specimen, in the realization of low cost devices that help in recognizing the health-state of peoples affected by motor problems related to neurological diseases, in application related to the virtual reality, etc. At this stage, the obtained results place the measurement accuracy lower than 1 cm when the localization range is a cube of 30 cm.
2017 IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace), 2017
In the field of Ultrasonic Non Destructive Testing (US-NDT) applied to the defect investigation o... more In the field of Ultrasonic Non Destructive Testing (US-NDT) applied to the defect investigation of aluminum bar for aerospace application, a number of solutions based on different signals generation, conditioning and data processing were proposed in literature. In this paper, a performance analysis of the US-NDT is proposed with the aim to obtain a suitable combination of such solutions that allow the best defect detection capability. The analysis was experimentally performed on two aluminum bars with two different cracks: the former generated by a fatigue process and the latter caused by a corrosive process. The results obtained with reference to different types of excitation signal and various methods of analyzing the acquired data are detailed.
Abstract: Replacing a lamp in an outdoor installation, like roadway lighting, requires a lot of t... more Abstract: Replacing a lamp in an outdoor installation, like roadway lighting, requires a lot of time and money. The proper maintenance strategy of installed lighting-system components is an essential element in ensuring that systems perform as designed and consequently ensure the safety. The paper presents a method for evaluating the residual life of High Pressure Sodium road lamps and for detecting incoming fault. The proposed method is based on the frequency domain analysis of the lamp current that changes its harmonic content in consequence of the aging.
2020 IEEE 7th International Workshop on Metrology for AeroSpace (MetroAeroSpace), 2020
In order to prevent ice formation, different strategies may be adopted: passive coatings, active ... more In order to prevent ice formation, different strategies may be adopted: passive coatings, active power consuming systems, or their combination. Several categories of coatings with ice-phobic behavior have been developed in the last decade, having as a common strategy the creation of rough and hydrophobic surfaces. The goal of the coating application is to repel water droplets, delay ice nucleation and significantly reduce ice adhesion. However, coatings alone are not sufficient to guarantee icing protection in a wide range of humidity and temperature conditions; rather, they should be considered as a complementary option to traditional and power consuming protection methods, such as mechanical ones, for reducing power consumption and the ecological footprint of active system. This work concerns with the early development stage of a low energy consumption system, based on ice-phobic coatings (passive technique) and ultrasounds (active technique), for detecting and removing ice build ups on treated surfaces. The capability of guided waves excited by a piezoelectric element, to remove ice accreted on a coated surface is investigated experimentally.
2019 II Workshop on Metrology for Industry 4.0 and IoT (MetroInd4.0&IoT), 2019
In the field of traffic speed measurement, thanks to the accuracy claimed by the manufacturer of ... more In the field of traffic speed measurement, thanks to the accuracy claimed by the manufacturer of Global Navigation Satellite System (GNSS) receivers (about 0.1 km/h) they are increasingly used as reference equipment for calibration of speed measurement instruments. In order to assure the traceability of the measurement results also the GNSS should be calibrated according to the rules of ISO/IEC 17025 standard and complying with the ILAC (International Laboratory Accreditation Cooperation) policy on the traceability of measurement results. Unfortunately, in this context, worldwide there is a strong limitation about the compliance to the ILAC policy. In this paper, an analysis about the suitability of an experimental calibration method for GNSS speed measurement systems has been carried out. Considering all the measurement uncertainty contribution a sensitive analysis has been made in order to understand which are the limits and/or the applicability of this calibration methodology in a speed range from 30 to 250 km/h, in compliance with the ISO/IEC 17025 and ILAC policy.
2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)
Real-time monitoring of chronic diseases such as cardiovascular diseases (CVDs) requires biopoten... more Real-time monitoring of chronic diseases such as cardiovascular diseases (CVDs) requires biopotential electrodes functioning over a long period without degrading recorded ECG signal quality. However, conventional conductive gel-based Ag/AgCl electrodes dehydrate over time gradually deteriorating the signal quality. Here, we fabricated graphene-based flexible textile electrodes for biosignal detection suitable for wearable devices. These electrodes are highly conductive and establish a low impedance contact with the skin. The recorded ECG signal signal-to-noise ratio (SNR) reaches up to 39.3 dB, 58% higher than the commercial Ag/AgCl electrode. The produced electrodes are flexible, therefore, adhere better to the skin at different anatomical positions of the body. Finally, the superhydrophobic property allows them to be used repeatedly after washing without compromising the quality of the ECG signal.
Aluminum bars are structural elements widely used in many application fields (industrial, aerospa... more Aluminum bars are structural elements widely used in many application fields (industrial, aerospace, naval, automotive, etc.). For the security and reliability of the structures in which they are used, it is very important to detect possible defects before using them or during their operating life. The Ultrasonic Non-Destructive Testing (US-NDT) seems to be very attractive as a diagnostic solution both for the initial and during the in-use inspections. In the literature, there are many instrumental solutions that differ with regard to the type of ultrasonic excitation signal, the adopted signal filtering and the implemented diagnostic algorithm. In this paper, an experimental comparison of various US-NDT excitation, filtering and diagnostic techniques is proposed, with the aim of identifying a suitable combination of such solutions that allows the best defect detection and localization capability. The experimental analysis was carried out on several specimens of aluminum bars with known defects (thin crack and corrosive defects). The obtained results show that the reliability of the defect diagnosis is strictly related both to the combinations of excitation, conditioning and processing methods implemented and to the type of the defect and its position respect to the inspection instrument.
In the field of Ultrasonic Non Destructive Testing (US-NDT) applied to the defect investigation o... more In the field of Ultrasonic Non Destructive Testing (US-NDT) applied to the defect investigation of aluminum bar for aerospace application, a number of solutions based on different signals generation, conditioning and data processing were proposed in literature. In this paper, a performance analysis of the US-NDT is proposed with the aim to obtain a suitable combination of such solutions that allow the best defect detection capability. The analysis was experimentally performed on two aluminum bars with two different cracks: the former generated by a fatigue process and the latter caused by a corrosive process. The results obtained with reference to different types of excitation signal and various methods of analyzing the acquired data are detailed.
Abstract The paper proposes the development, the analysis, and the experimental validation of a n... more Abstract The paper proposes the development, the analysis, and the experimental validation of a novel probe for Eddy Current (EC) Non-Destructive Testing especially thought to warrant good signal to noise ratios in the detection of thin defects when low excitation currents are adopted and whatever the orientation of the probe respect to the orientation of the defect. The probe is based on a simple double coil excitation, that generate a single direction EC flow, and adopts three magnetic sensors that form a triaxial magnetic sensor. Other main contributions of this paper are: i) performance analysis of an EC triaxial probe carried out in simulation environment that considers the measurement uncertainty of the magnetic sensors; ii) an experimental campaign that allow evaluating the performance of the realized probe; iii) a comparison between simulated and experimental results that prove the goodness of the proposed approach.
The paper proposes the realization and the preliminary characterization of a short-range localiza... more The paper proposes the realization and the preliminary characterization of a short-range localization systems based on the measurement of magnetic fields. Fixed anchors that generate sinusoidal wave magnetic fields at different frequencies and mobile anchors that measure the received magnetic field values compose the system. Main topics faced in the paper are: the realization and the preliminary characterization of threedimensional magnetic field sensors based on the suitable arrangement of single axis TMR magnetic sensors and the proposal of a novel, scalable and flexible localization setup allowing multiple mobile agents without increasing the complexity and the operational time of the system. Thanks to the low cost and the flexibility of the proposal, the realized system has a wide impact on the possible applications in industrial, medical and smart-life fields. For example, it can be adopted in localization of probes that execute the defect detection in specimen, in the realization of low cost devices that help in recognizing the health-state of peoples affected by motor problems related to neurological diseases, in application related to the virtual reality, etc. At this stage, the obtained results place the measurement accuracy lower than 1 cm when the localization range is a cube of 30 cm.
IEEE Transactions on Instrumentation and Measurement, 2022
Localizing objects in indoor environments with anchor-based systems poses several challenges to b... more Localizing objects in indoor environments with anchor-based systems poses several challenges to be faced. The main one is the design phase. What is the minimum number of anchors to be adopted? What is the optimal placement of the anchors in the operating domain? These are typical issues that need to be solved in this stage. Such issue is generally addressed by several experimental tests, imposing high costs both in the required large amounts of time and in the use of devices. In addition, sometimes the experiments will not warrant to identify the optimal design solution. In this work, a black-box design tool is proposed, able to manage different environments, in terms of domain size, maximum number of available anchors, device metrological features, and target performance. Such an approach, to be effective, needs a preliminary validation versus experimental results to make the future performance predictions reliable and avoid unexpected localization accuracy degradation. For this reason, the presented work adopts a side-by-side development, by evaluating results' compatibility, in static and dynamic contexts, before addressing further and more complex analyses relying on the design tool only. Such a comparison proves the goodness of the developed design tool, and the outcomes allow an accurate localization system design by finding anchors' placement solutions with the minimum computational burden.
Localization in indoor environments is a hard task because of several constraints, both in terms ... more Localization in indoor environments is a hard task because of several constraints, both in terms of multiple reflections due to wall and people moving around the localization domain. This is especially due to the communication technologies adopted to perform both ranging and positioning. In this paper, a Ultra Wide Band technology is adopted to perform localization in indoor environment, considering a square domain, by means of three fixed anchors and one mobile node. In specific applications, the object to localize is covered by a metallic shield, e.g, robots, and the localization sensor must be embedded inside the object. In this scenario, the paper proposes to solve three issues: assess nominal performance of UWB localization technology, find a way to approach it in harsh conditions, as the one above specified and a further investigation on optimal anchors' positions in the localization domain to verify sensitivity to specific set-up arrangement. First task is accomplished through an extensive measurement campaign without any obstacle; second one is solved by means of a double calibration procedure estimating anchor-to-anchor distance and online correcting the acquired data. A simulated approach that, starting from on-field measurements, verifies the role of different anchors' positions on the positioning error, completes the investigation.
IEEE Transactions on Instrumentation and Measurement
Localizing objects in indoor environments with anchor-based systems poses several challenges to b... more Localizing objects in indoor environments with anchor-based systems poses several challenges to be faced. The main one is the design phase. What is the minimum number of anchors to be adopted? What is the optimal placement of the anchors in the operating domain? These are typical issues that need to be solved in this stage. Such issue is generally addressed by several experimental tests, imposing high costs both in the required large amounts of time and in the use of devices. In addition, sometimes the experiments will not warrant to identify the optimal design solution. In this work, a black-box design tool is proposed, able to manage different environments, in terms of domain size, maximum number of available anchors, device metrological features, and target performance. Such an approach, to be effective, needs a preliminary validation versus experimental results to make the future performance predictions reliable and avoid unexpected localization accuracy degradation. For this reason, the presented work adopts a side-by-side development, by evaluating results' compatibility, in static and dynamic contexts, before addressing further and more complex analyses relying on the design tool only. Such a comparison proves the goodness of the developed design tool, and the outcomes allow an accurate localization system design by finding anchors' placement solutions with the minimum computational burden.
Fast detection and reconstruction of defect geometry is one of the main goals of ECT. Inversion o... more Fast detection and reconstruction of defect geometry is one of the main goals of ECT. Inversion of ECT data usually requires high-computational time and resources, hampering the application in on-line or in-situ inspections. In [1-2], it was hypothesized that defects' patterns in 2D ECT images can be modelled as a 2D convolution between defects' geometrical shape and a Hermite-Gauss (HG) mode function, which depends on the sensor. By knowing the mode function of a given sensor, it is possible to exploit image deconvolution to increase the SNR of detection and for a fast estimate of the defect shape and dimensions. To do a further step in this direction, in this work various sensors, excitation strategies and analysis methods were used to test a benchmark sample containing known defects. It was confirmed that for all the various configurations, 2D images in time- or frequency- domain are well described by the HG hypothesis.
2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2020
The paper proposes the realization and the preliminary characterization of a short-range localiza... more The paper proposes the realization and the preliminary characterization of a short-range localization systems based on the measurement of magnetic fields. Fixed anchors that generate sinusoidal wave magnetic fields at different frequencies and mobile anchors that measure the received magnetic field values compose the system. Main topics faced in the paper are: the realization and the preliminary characterization of threedimensional magnetic field sensors based on the suitable arrangement of single axis TMR magnetic sensors and the proposal of a novel, scalable and flexible localization setup allowing multiple mobile agents without increasing the complexity and the operational time of the system. Thanks to the low cost and the flexibility of the proposal, the realized system has a wide impact on the possible applications in industrial, medical and smart-life fields. For example, it can be adopted in localization of probes that execute the defect detection in specimen, in the realization of low cost devices that help in recognizing the health-state of peoples affected by motor problems related to neurological diseases, in application related to the virtual reality, etc. At this stage, the obtained results place the measurement accuracy lower than 1 cm when the localization range is a cube of 30 cm.
2017 IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace), 2017
In the field of Ultrasonic Non Destructive Testing (US-NDT) applied to the defect investigation o... more In the field of Ultrasonic Non Destructive Testing (US-NDT) applied to the defect investigation of aluminum bar for aerospace application, a number of solutions based on different signals generation, conditioning and data processing were proposed in literature. In this paper, a performance analysis of the US-NDT is proposed with the aim to obtain a suitable combination of such solutions that allow the best defect detection capability. The analysis was experimentally performed on two aluminum bars with two different cracks: the former generated by a fatigue process and the latter caused by a corrosive process. The results obtained with reference to different types of excitation signal and various methods of analyzing the acquired data are detailed.
Abstract: Replacing a lamp in an outdoor installation, like roadway lighting, requires a lot of t... more Abstract: Replacing a lamp in an outdoor installation, like roadway lighting, requires a lot of time and money. The proper maintenance strategy of installed lighting-system components is an essential element in ensuring that systems perform as designed and consequently ensure the safety. The paper presents a method for evaluating the residual life of High Pressure Sodium road lamps and for detecting incoming fault. The proposed method is based on the frequency domain analysis of the lamp current that changes its harmonic content in consequence of the aging.
2020 IEEE 7th International Workshop on Metrology for AeroSpace (MetroAeroSpace), 2020
In order to prevent ice formation, different strategies may be adopted: passive coatings, active ... more In order to prevent ice formation, different strategies may be adopted: passive coatings, active power consuming systems, or their combination. Several categories of coatings with ice-phobic behavior have been developed in the last decade, having as a common strategy the creation of rough and hydrophobic surfaces. The goal of the coating application is to repel water droplets, delay ice nucleation and significantly reduce ice adhesion. However, coatings alone are not sufficient to guarantee icing protection in a wide range of humidity and temperature conditions; rather, they should be considered as a complementary option to traditional and power consuming protection methods, such as mechanical ones, for reducing power consumption and the ecological footprint of active system. This work concerns with the early development stage of a low energy consumption system, based on ice-phobic coatings (passive technique) and ultrasounds (active technique), for detecting and removing ice build ups on treated surfaces. The capability of guided waves excited by a piezoelectric element, to remove ice accreted on a coated surface is investigated experimentally.
2019 II Workshop on Metrology for Industry 4.0 and IoT (MetroInd4.0&IoT), 2019
In the field of traffic speed measurement, thanks to the accuracy claimed by the manufacturer of ... more In the field of traffic speed measurement, thanks to the accuracy claimed by the manufacturer of Global Navigation Satellite System (GNSS) receivers (about 0.1 km/h) they are increasingly used as reference equipment for calibration of speed measurement instruments. In order to assure the traceability of the measurement results also the GNSS should be calibrated according to the rules of ISO/IEC 17025 standard and complying with the ILAC (International Laboratory Accreditation Cooperation) policy on the traceability of measurement results. Unfortunately, in this context, worldwide there is a strong limitation about the compliance to the ILAC policy. In this paper, an analysis about the suitability of an experimental calibration method for GNSS speed measurement systems has been carried out. Considering all the measurement uncertainty contribution a sensitive analysis has been made in order to understand which are the limits and/or the applicability of this calibration methodology in a speed range from 30 to 250 km/h, in compliance with the ISO/IEC 17025 and ILAC policy.
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Papers by Marco Laracca