Pub Date : 2021-03-22DOI: 10.1109/INERTIAL51137.2021.9430481
Kai Wu, Kuo Lu, Qingsong Li, Hao Zhang, Ming Zhuo, Xuezhong Wu, D. Xiao
The parametric resonances have been widely investigated in many mechanical resonators, and the drive frequencies for parametric amplification are generally twice the resonant frequencies in related studies. This paper presents the parametric amplification resulting from applying the parametric excitation signal of triple resonant frequency along with the drive signal of the fundamental frequency to a disk resonator gyroscope (DRG). Experimental results in the DRG demonstrate that the response amplitude of the gyroscope increases with the increment of the triple frequency voltage, and the effective quality factor has been improved by 4.9 times at the same time.
{"title":"The Parametric Amplification in MEMS Gyroscopes Based on Triple Resonant Frequency Signal","authors":"Kai Wu, Kuo Lu, Qingsong Li, Hao Zhang, Ming Zhuo, Xuezhong Wu, D. Xiao","doi":"10.1109/INERTIAL51137.2021.9430481","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430481","url":null,"abstract":"The parametric resonances have been widely investigated in many mechanical resonators, and the drive frequencies for parametric amplification are generally twice the resonant frequencies in related studies. This paper presents the parametric amplification resulting from applying the parametric excitation signal of triple resonant frequency along with the drive signal of the fundamental frequency to a disk resonator gyroscope (DRG). Experimental results in the DRG demonstrate that the response amplitude of the gyroscope increases with the increment of the triple frequency voltage, and the effective quality factor has been improved by 4.9 times at the same time.","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124377736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-22DOI: 10.1109/INERTIAL51137.2021.9430465
D. Lin, Robert MacDonald, Dorin Calbaza, J. Popp, Tammy Johnson, E. Andarawis, M. Aimi
GE Research has developed a low-cost inertial MEMS process flow for navigation-grade inertial sensor fabrication called the ‘Polaris' process. With a total of six mask layers, GE Polaris features thick silicon on insulation (SOI) with a 20 to 200 µm device layer, 30:1 high aspect ratio etching, and wafer level vacuum sealing with through silicon via (TSV) technology. GE Polaris has demonstrated good TSV ohmic contact, good vacuum seal integrity, high wafer yield with good etch symmetry and uniformity, and proven navigation-grade performance with high temperature reliability. GE Polaris strives to provide the simplest MEMS PNT flow for quick prototyping and low-to-mid volume production.
{"title":"Polaris - A Low Cost MEMS Fabrication Platform for Navigation-Grade Inertial Sensors","authors":"D. Lin, Robert MacDonald, Dorin Calbaza, J. Popp, Tammy Johnson, E. Andarawis, M. Aimi","doi":"10.1109/INERTIAL51137.2021.9430465","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430465","url":null,"abstract":"GE Research has developed a low-cost inertial MEMS process flow for navigation-grade inertial sensor fabrication called the ‘Polaris' process. With a total of six mask layers, GE Polaris features thick silicon on insulation (SOI) with a 20 to 200 µm device layer, 30:1 high aspect ratio etching, and wafer level vacuum sealing with through silicon via (TSV) technology. GE Polaris has demonstrated good TSV ohmic contact, good vacuum seal integrity, high wafer yield with good etch symmetry and uniformity, and proven navigation-grade performance with high temperature reliability. GE Polaris strives to provide the simplest MEMS PNT flow for quick prototyping and low-to-mid volume production.","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125692191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-22DOI: 10.1109/INERTIAL51137.2021.9430477
Rachid Taïbi, Olivier Jolly, T. Kerrien, Pascal Labarthe, Karl Aubry, Gauthier Le Bihan, Stéphanie Michel
This paper reports a new Quartz vibrating sensor developed by iXblue to respond to new challenges for navigation applications as high dynamic range (100g), navigation grade performance (< 100μg and 30 ppm bias and scale factor respectively) according with the challenge of Size, Weight and Power (SWaP) consumption reduction (less than 10 grams and 50mW).
{"title":"SWaP Reduction for High Dynamic Navigation Grade Accelerometer Based on Quartz VBA Technology","authors":"Rachid Taïbi, Olivier Jolly, T. Kerrien, Pascal Labarthe, Karl Aubry, Gauthier Le Bihan, Stéphanie Michel","doi":"10.1109/INERTIAL51137.2021.9430477","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430477","url":null,"abstract":"This paper reports a new Quartz vibrating sensor developed by iXblue to respond to new challenges for navigation applications as high dynamic range (100g), navigation grade performance (< 100μg and 30 ppm bias and scale factor respectively) according with the challenge of Size, Weight and Power (SWaP) consumption reduction (less than 10 grams and 50mW).","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123599036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper reports a high performance rate-integrating Hemispherical Resonant Gyroscope (HRG). After the compensation on the anisostiffness, anisodamping and detection and actuation gain errors, the frequency mismatch and angle-dependent bias drift (ADB) of HRG reduce about 85% from 2mHz to 0.3mHz and 78% from 0.01°/s to 0.0022°/s, respectively. Finally, HRG shows excellent bias instability of 0.00753°/h, high input range of over ±2600°/s with small nonlinearity of 17ppm and a threshold value of less than ±0.001°/s.
{"title":"A High-Performance Rate-Integrating Hemispherical Resonant Gyros with 0.00753°/h Bias Instability","authors":"Yongmeng Zhang, Sheng Yu, Kechen Guo, Jiangkun Sun, Xuezhong Wu, D. Xiao","doi":"10.1109/INERTIAL51137.2021.9430490","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430490","url":null,"abstract":"This paper reports a high performance rate-integrating Hemispherical Resonant Gyroscope (HRG). After the compensation on the anisostiffness, anisodamping and detection and actuation gain errors, the frequency mismatch and angle-dependent bias drift (ADB) of HRG reduce about 85% from 2mHz to 0.3mHz and 78% from 0.01°/s to 0.0022°/s, respectively. Finally, HRG shows excellent bias instability of 0.00753°/h, high input range of over ±2600°/s with small nonlinearity of 17ppm and a threshold value of less than ±0.001°/s.","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129453855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-22DOI: 10.1109/INERTIAL51137.2021.9430474
Austin R. Parrish, R. Noor, A. Shkel
This paper reports on the development of a microfabricated gradiometer that permits uniform buffer gas content in both magnetometers. This improves the common mode noise rejection of the gradiometer by ensuring the broadening and shift of the Rb optical absorption line are uniform. The reported fabrication process permits micro-channels connecting the two magnetometers allowing for uniform buffer gas pressure. We discuss two methods of characterizing the common mode rejection ratio (CMRR), before and after measuring the frequency response of the individual magnetometers. The average uncalibrated and calibrated CMRR achieved in a table-top setup was 72.7 and 85.0 respectively over a bandwidth 3-200Hz.
{"title":"Microfabricated Optically Pumped Gradiometer with Uniform Buffer Gases","authors":"Austin R. Parrish, R. Noor, A. Shkel","doi":"10.1109/INERTIAL51137.2021.9430474","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430474","url":null,"abstract":"This paper reports on the development of a microfabricated gradiometer that permits uniform buffer gas content in both magnetometers. This improves the common mode noise rejection of the gradiometer by ensuring the broadening and shift of the Rb optical absorption line are uniform. The reported fabrication process permits micro-channels connecting the two magnetometers allowing for uniform buffer gas pressure. We discuss two methods of characterizing the common mode rejection ratio (CMRR), before and after measuring the frequency response of the individual magnetometers. The average uncalibrated and calibrated CMRR achieved in a table-top setup was 72.7 and 85.0 respectively over a bandwidth 3-200Hz.","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127134198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-22DOI: 10.1109/INERTIAL51137.2021.9430467
Jianlin Chen, T. Tsukamoto, Shuji Tanaka
In this paper, we report two types of novel mode-matched disk resonators consisting of multi rings made by single crystal (100) silicon. One of the resonators compensates the frequency mismatch using a combination of thick ring and multiple thin rings, showing the mode mismatch as small as 43 ppm. The other one uses elliptic shape connection structures, showing the mode-mismatch as small as 61 ppm. Considering the robustness of mode matching against fabrication errors, the crystal orientation error increases the frequency mismatch more significantly in the first design, and the ring width variation causes larger frequency split in the later design.
{"title":"Mode-Matched Multi-Ring Disk Resonator Using Single Crystal (100) Silicon","authors":"Jianlin Chen, T. Tsukamoto, Shuji Tanaka","doi":"10.1109/INERTIAL51137.2021.9430467","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430467","url":null,"abstract":"In this paper, we report two types of novel mode-matched disk resonators consisting of multi rings made by single crystal (100) silicon. One of the resonators compensates the frequency mismatch using a combination of thick ring and multiple thin rings, showing the mode mismatch as small as 43 ppm. The other one uses elliptic shape connection structures, showing the mode-mismatch as small as 61 ppm. Considering the robustness of mode matching against fabrication errors, the crystal orientation error increases the frequency mismatch more significantly in the first design, and the ring width variation causes larger frequency split in the later design.","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116052227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-22DOI: 10.1109/INERTIAL51137.2021.9430487
Atsumi Toda, Y. Koike
This paper proposes a thermopile and magnetometer-assisted INS/GPS navigation as a robust navigation method for attitude estimation compared to the conventional loosely-coupled INS/GPS method. This system aims to maintain the accuracy of attitude estimation even when autonomous UAV loses GPS signals temporarily, and to continue the flight without crashing. Accuracy of the attitude estimation is maintained by directly correcting the attitude estimates (roll, pitch, and heading) from INS by using the infrared intensity and magnetic-based sensor models. We performed the simulation to compare the accuracy of the proposed method and loosely-coupled INS/GPS. Results showed that when the GPS signal is active, the estimation accuracy of the two methods for attitude, velocity, and position are identical. Moreover, when the GPS signal is lost, all the estimates deteriorate in the conventional method, while our system maintains the accuracy of the attitude estimation and suppresses the decrease in the accuracy of the velocity and position estimates.
{"title":"Simulation Design of Thermopile and Magnetometer Aided INS/GPS Navigation System for UAV Navigation","authors":"Atsumi Toda, Y. Koike","doi":"10.1109/INERTIAL51137.2021.9430487","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430487","url":null,"abstract":"This paper proposes a thermopile and magnetometer-assisted INS/GPS navigation as a robust navigation method for attitude estimation compared to the conventional loosely-coupled INS/GPS method. This system aims to maintain the accuracy of attitude estimation even when autonomous UAV loses GPS signals temporarily, and to continue the flight without crashing. Accuracy of the attitude estimation is maintained by directly correcting the attitude estimates (roll, pitch, and heading) from INS by using the infrared intensity and magnetic-based sensor models. We performed the simulation to compare the accuracy of the proposed method and loosely-coupled INS/GPS. Results showed that when the GPS signal is active, the estimation accuracy of the two methods for attitude, velocity, and position are identical. Moreover, when the GPS signal is lost, all the estimates deteriorate in the conventional method, while our system maintains the accuracy of the attitude estimation and suppresses the decrease in the accuracy of the velocity and position estimates.","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123583514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-22DOI: 10.1109/INERTIAL51137.2021.9430470
Fabrício Saggin, Cécile Pernin, A. Korniienko, G. Scorletti, C. Blanc
This work presents a new approach to design the controllers for MEMS gyroscopes based on the robust $H$∞ synthesis. A systematic and flexible method for designing digital controllers for the drive and sense modes of a Coriolis vibratory gyroscope is proposed. Furthermore, the sinusoidal signals are directly controlled instead of their amplitude and phase, so that (de)modulation is not required in the control loops. This fact allows us to simplify the electronic design and to provide formal guarantees of stability and performance. First practical results are presented, proving the implementability of our approach.
{"title":"Digital Control of MEMS Gyroscopes: A Robust Approach","authors":"Fabrício Saggin, Cécile Pernin, A. Korniienko, G. Scorletti, C. Blanc","doi":"10.1109/INERTIAL51137.2021.9430470","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430470","url":null,"abstract":"This work presents a new approach to design the controllers for MEMS gyroscopes based on the robust $H$∞ synthesis. A systematic and flexible method for designing digital controllers for the drive and sense modes of a Coriolis vibratory gyroscope is proposed. Furthermore, the sinusoidal signals are directly controlled instead of their amplitude and phase, so that (de)modulation is not required in the control loops. This fact allows us to simplify the electronic design and to provide formal guarantees of stability and performance. First practical results are presented, proving the implementability of our approach.","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123530301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-22DOI: 10.1109/INERTIAL51137.2021.9430466
Burgess R. Johnson, Curt Albrecht, T. Braman, K. Christ, Patrick Duffy, D. Endean, M. Gnerlich, J. Reinke
Performance data is presented from a MEMS-based IMU being developed at Honeywell with the objective of navigation-grade performance for a variety of applications. Design of the gyroscope is derived from that of the gyroscope in Honeywell's HG1930 tactical-grade MEMS IMU, a widely used tactical-grade MEMS IMU product. Fabrication processes similar to that of the gyroscope are used to fabricate a new vibrating beam accelerometer which measures acceleration via differential frequency change. Turn-on to turn-on bias repeatability better than 0.1 deg/hr for the gyroscopes and better than 20 micro-g for the accelerometers has been consistently demonstrated. Typical gyro ARW of 0.0035 deg/rt(hr) has been achieved, and accel root Allan variance is less than 10 micro-g at integration time of 1 second. The IMU has the same mechanical footprint (though slightly taller) and same electrical interface as Honeywell's HG1930 IMU.
{"title":"Development of a Navigation-Grade MEMS IMU","authors":"Burgess R. Johnson, Curt Albrecht, T. Braman, K. Christ, Patrick Duffy, D. Endean, M. Gnerlich, J. Reinke","doi":"10.1109/INERTIAL51137.2021.9430466","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430466","url":null,"abstract":"Performance data is presented from a MEMS-based IMU being developed at Honeywell with the objective of navigation-grade performance for a variety of applications. Design of the gyroscope is derived from that of the gyroscope in Honeywell's HG1930 tactical-grade MEMS IMU, a widely used tactical-grade MEMS IMU product. Fabrication processes similar to that of the gyroscope are used to fabricate a new vibrating beam accelerometer which measures acceleration via differential frequency change. Turn-on to turn-on bias repeatability better than 0.1 deg/hr for the gyroscopes and better than 20 micro-g for the accelerometers has been consistently demonstrated. Typical gyro ARW of 0.0035 deg/rt(hr) has been achieved, and accel root Allan variance is less than 10 micro-g at integration time of 1 second. The IMU has the same mechanical footprint (though slightly taller) and same electrical interface as Honeywell's HG1930 IMU.","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122700015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-22DOI: 10.1109/INERTIAL51137.2021.9430459
Jose Ricardo Silva Scarpari, C. S. Deolindo, Maria Adelia Albano Aratanha, M. W. Ribeiro, Anderson de Souza, E. Kozasa, Daisy Hirata, J. E. Matieli, R. G. Annes da Silva, C. Forster
This paper presents a method to synchronize data acquisition devices that are mechanically coupled, having attached an accelerometer to each device. A common time base for the accelerometer signals are obtained through the identification of pairing salient peaks and applying line-fitting through the potential matches. Aligning data recorded from different sources is important to precisely provide an observation of the state of a system in time (sensor fusion), to estimate the correlation between its variables and to correlate variables to time-based events. A data link between devices is not always possible or convenient. If the acquisition devices are mechanically coupled, such as being in the same body or vehicle, we propose to synchronize the data recorded from both by using the accelerometers signals to bridge. The provided solution is an automated process to find the temporal reference between accelerometer signals. Several signal processing steps are taken after data collection and storage: inconsistency removal and filtering, detection of maxima and minima, selection of saliencies, description through a characteristic pair of numbers: the interval lengths between it and its successor and its predecessor, listing possible matches between salient points, selection of the topmost relevant matches and line fitting with consensus. We discuss qualitative similarities of related work. Quantitative results are also presented by using the multidisciplinary study that motivated this work, with simultaneous data from the instrumentation of a helicopter and pilot physiological data. To conclude, we discuss the limitations of the presented approach and future work.
{"title":"Method for the Synchronization of Data Recorders by Coupling Accelerometer Data","authors":"Jose Ricardo Silva Scarpari, C. S. Deolindo, Maria Adelia Albano Aratanha, M. W. Ribeiro, Anderson de Souza, E. Kozasa, Daisy Hirata, J. E. Matieli, R. G. Annes da Silva, C. Forster","doi":"10.1109/INERTIAL51137.2021.9430459","DOIUrl":"https://doi.org/10.1109/INERTIAL51137.2021.9430459","url":null,"abstract":"This paper presents a method to synchronize data acquisition devices that are mechanically coupled, having attached an accelerometer to each device. A common time base for the accelerometer signals are obtained through the identification of pairing salient peaks and applying line-fitting through the potential matches. Aligning data recorded from different sources is important to precisely provide an observation of the state of a system in time (sensor fusion), to estimate the correlation between its variables and to correlate variables to time-based events. A data link between devices is not always possible or convenient. If the acquisition devices are mechanically coupled, such as being in the same body or vehicle, we propose to synchronize the data recorded from both by using the accelerometers signals to bridge. The provided solution is an automated process to find the temporal reference between accelerometer signals. Several signal processing steps are taken after data collection and storage: inconsistency removal and filtering, detection of maxima and minima, selection of saliencies, description through a characteristic pair of numbers: the interval lengths between it and its successor and its predecessor, listing possible matches between salient points, selection of the topmost relevant matches and line fitting with consensus. We discuss qualitative similarities of related work. Quantitative results are also presented by using the multidisciplinary study that motivated this work, with simultaneous data from the instrumentation of a helicopter and pilot physiological data. To conclude, we discuss the limitations of the presented approach and future work.","PeriodicalId":424028,"journal":{"name":"2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"253 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134385359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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