Inertial reference unit
View article: An introduction to inertial navigation
An introduction to inertial navigation Open
Until recently the weight and size of inertial sensors has prohibited their use in domains such as human motion capture. Recent improvements in the performance of small and lightweight micro-machined electromechanical systems (MEMS) inerti…
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Using Inertial Sensors for Position and Orientation Estimation Open
In recent years, microelectromechanical system (MEMS) inertial sensors (3D accelerometers and 3D gyroscopes) have become widely available due to their small size and low cost. Inertial sensor measurements are obtained at high sampling rate…
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Inertial sensors technologies for navigation applications: state of the art and future trends Open
Inertial navigation represents a unique method of navigation, in which there is no dependency on external sources of information. As opposed to other position fixing navigation techniques, inertial navigation performs the navigation in a r…
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MEMS Inertial Sensor Calibration Technology: Current Status and Future Trends Open
A review of various calibration techniques of MEMS inertial sensors is presented in this paper. MEMS inertial sensors are subject to various sources of error, so it is essential to correct these errors through calibration techniques to imp…
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A Mixed Deep Recurrent Neural Network for MEMS Gyroscope Noise Suppressing Open
Currently, positioning, navigation, and timing information is becoming more and more vital for both civil and military applications. Integration of the global navigation satellite system and /inertial navigation system is the most popular …
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MEMS IMU Error Mitigation Using Rotation Modulation Technique Open
Micro-electro-mechanical-systems (MEMS) inertial measurement unit (IMU) outputs are corrupted by significant sensor errors. The navigation errors of a MEMS-based inertial navigation system will therefore accumulate very quickly over time. …
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Development of compact cold-atom sensors for inertial navigation Open
Inertial sensors based on cold atom interferometry exhibit many interesting\nfeatures for applications related to inertial navigation, particularly in terms\nof sensitivity and long-term stability. However, at present the typical atom\nint…
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Micromachined Fluid Inertial Sensors Open
Micromachined fluid inertial sensors are an important class of inertial sensors, which mainly includes thermal accelerometers and fluid gyroscopes, which have now been developed since the end of the last century for about 20 years. Compare…
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Validation of a High Sampling Rate Inertial Measurement Unit for Acceleration During Running Open
The musculo-skeletal response of athletes to various activities during training exercises has become a critical issue in order to optimize their performance and minimize injuries. However, dynamic and kinematic measures of an athlete’s act…
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Comparison of Kalman Filters for Inertial Integrated Navigation Open
The current research on integrated navigation is mainly focused on filtering or integrated navigation equipment. Studies systematically comparing and analyzing how to choose appropriate integrated filtering methods under different circumst…
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Development of a Wearable Device for Motion Capturing Based on Magnetic and Inertial Measurement Units Open
This paper presents a novel wearable device for gesture capturing based on inertial and magnetic measurement units that are made up of micromachined gyroscopes, accelerometers, and magnetometers. The low-cost inertial and magnetic measurem…
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An Improved Fast Self-Calibration Method for Hybrid Inertial Navigation System under Stationary Condition Open
The navigation accuracy of the inertial navigation system (INS) can be greatly improved when the inertial measurement unit (IMU) is effectively calibrated and compensated, such as gyro drifts and accelerometer biases. To reduce the require…
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Improving Observability of an Inertial System by Rotary Motions of an IMU Open
It has been identified that the inertial system is not a completely observable system in the absence of maneuvers. Although the velocity errors and the accelerometer bias in the vertical direction can be solely observable, other error stat…
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Assessing the validity of inertial measurement units for shoulder kinematics using a commercial sensor‐software system: A validation study Open
Background and Aims Wearable inertial sensors may offer additional kinematic parameters of the shoulder compared to traditional instruments such as goniometers when elaborate and time‐consuming data processing procedures are undertaken. Ho…
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Smartphone Inertial Measurement Unit Data Features for Analyzing Driver Driving Behavior Open
Driving behavior is an important aspect of maintaining and sustaining safe transport on the roads. It also directly affects fuel consumption, traffic flow, public health, and air pollution along with psychology and personal mental health. …
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A System-Level Self-Calibration Method for Installation Errors in A Dual-Axis Rotational Inertial Navigation System Open
In a dual-axis rotational inertial navigation system (RINS), there are two kinds of installation errors, nonorthogonal installation errors of inertial sensors, and installation errors between the inertial measurement unit (IMU) and rotatio…
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Novel rotation scheme for dual-axis rotational inertial navigation system based on body diagonal rotation of inertial measurement unit Open
Traditional rotational inertial navigation systems are based on rotation around one or two sensitive axes of inertial sensors. However, as the rotation and sensitive axes of inertial sensors lie along the same direction, it is difficult to…
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Cold atom inertial sensors for navigation applications Open
Quantum sensors based on atom interferometers can provide measurements of inertial quantities with unprecedented accuracy and precision. It has been suggested that this sea change in sensing could provide an inertial navigation capability …
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A Separated Calibration Method for Inertial Measurement Units Mounted on Three-Axis Turntables Open
Inertial Measurement Unit (IMU) calibration accuracy is easily affected by turntable errors, so the primary aim of this study is to reduce the dependence on the turntable’s precision during the calibration process. Firstly, the indicated-o…
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Analysis of Gyro Bias Depending on the Position of Inertial Measurement Unit in Rotational Inertial Navigation Systems Open
In this paper, a calibration method for gyro bias that changes depending on the position of the IMU (inertial measurement unit) is proposed to improve the navigation performance of RLG-based RINS (ring-laser-gyro-based rotational inertial …
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A micro-electro-mechanical-system-based inertial system with rotating accelerometers and gyroscopes for land vehicle navigation Open
Micro-electro-mechanical-system accelerometers and gyroscopes outputs are corrupted by significant random errors. The rotation modulation technique, which was mainly applied to ring laser gyro and fiber optical gyro, has been recently empl…
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Analysis and Compensation of Modulation Angular Rate Error Based on Missile-Borne Rotation Semi-Strapdown Inertial Navigation System Open
The Semi-Strapdown Inertial Navigation System (SSINS) provides a new solution to attitude measurement of a high-speed rotating missile. However, micro-electro-mechanical-systems (MEMS) inertial measurement unit (MIMU) outputs are corrupted…
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An Improved System-Level Calibration Scheme for Rotational Inertial Navigation Systems Open
The system-level calibration technology of rotational inertial navigation is one of the main methods to improve the accuracy of inertial navigation, and the design of the calibration scheme is the key to calibration technology. By the esta…
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An Enhanced Pedestrian Visual-Inertial SLAM System Aided with Vanishing Point in Indoor Environments Open
The visual-inertial simultaneous localization and mapping (SLAM) is a feasible indoor positioning system that combines the visual SLAM with inertial navigation. There are accumulated drift errors in inertial navigation due to the state pro…
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Inertial Velocity Estimation for Indoor Navigation Through Magnetic Gradient-based EKF and LSTM Learning Model Open
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A Review on the Inertial Measurement Unit Array of Microelectromechanical Systems Open
In recent years, microelectromechanical systems (MEMS) technology has developed rapidly, and low precision inertial devices have achieved small volume, light weight, and mass production. Under this background, array technology has emerged …
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Validation of an Inertial Sensor System for Swing Analysis in Golf Open
Wearable inertial sensor systems are an upcoming tool for self-evaluation in sports, and can be used for swing analysis in golf. The aim of this work was to determine the validity and repeatability of an inertial sensor system attached to …
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Methodology of Airborne Gravimetry Surveying and Strapdown Gravimeter Data Processing Open
The paper presents a methodology of preparing and conducting airborne gravimetry survey using an inertial measuring unit (IMU) or strapdown inertial navigation system as airborne gravimeter. We also discuss the key aspects of developing ap…
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Analysis of Inertial Measurement Units Performances Under Dynamic Conditions Open
Inertial measurement units (IMUs) are nowadays widespread in the automotive industry. Micro-electromechanical systems (MEMS) IMUs are expanding because of several advantages of this technology. However, a significant research gap neglected…
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An analysis of a gyro-free inertial system for INS/GNSS navigation Open
Although the concept of determining angular velocity out of the readings of multiple, displaced accelerometers is not new, apparently it has not yet matured into practical technologies. A new generation of low-cost MEMS accelerometers, whi…