The fault-tolerant air data/inertial reference unit (ADIRU) described is a key part of a fault-tolerant air data/inertial reference system (ADIRS) designed to be the inertial and air data reference for the ARINC 651 Integrated Modular Avionics (IMA) distributed architecture. The ADIRU ...
Tópico(s): Target Tracking and
1993 - Institute of Electrical and Electronics Engineers | IEEE Aerospace and Electronic Systems Magazine
... system (ADIRS) described consists of a fault-tolerant air data inertial reference unit, a secondary air data attitude reference unit, and six air data modules. The ADIRS replaces the conventional inertial reference and air data systems and uses ARINC 629 ...
Tópico(s): Real-Time Systems Scheduling
1992 - Institute of Electrical and Electronics Engineers | IEEE Aerospace and Electronic Systems Magazine
Laurens Van Eykeren, Q. P. Chu,
... applicability of the method for the FDI of air data sensors and measurements of the inertial reference unit.
Tópico(s): Target Tracking and
2014 - Elsevier BV | Control Engineering Practice
... cut down on wiring and connectors, and an inertial reference system and an air-data computer combined into one line-replacement unit. The author describes several commercial and military aircraft ...
Tópico(s): Real-Time Systems Scheduling
1986 - Institute of Electrical and Electronics Engineers | IEEE Spectrum
Tópico(s): Target Tracking and
2006 - Emerald Publishing Limited | Aircraft Engineering and Aerospace Technology
... G. R. and Shaw J. C., "Integrated Strapdown Air Data System," U.S. Patent No. 4303978, 18 April 1980. Google Scholar[8] Hruby R. J. and Bjorkman W. S., "Flight Test Results of the Strapdown Hexad Inertial Reference Unit (SIRU)," NASA Ames Research Center TMX-73,223, ...
Tópico(s): Geophysics and Sensor Technology
2013 - American Institute of Aeronautics and Astronautics | Journal of Guidance Control and Dynamics
A gyroscope-free inertial navigation system uses only accelerometers to compute navigation trajectories. It is a low-cost navigation system, but its output error diverges at a rate that is an order faster than that of a conventional gyroscope-based system. So integration with an external reference system, such as the Global Positioning System, is necessary for long-term navigation applications. In this pa-per, an integrated GPS and gyroscope-free INS system is designed to achieve stable long-term ...
Tópico(s): Target Tracking and
2002 - Springer Nature | PATH research report
Yunmei Zhao, Hang Zhao, Jianliang Ai, Yiqun Dong,
... these issues, exemplifying the FD problem of aircraft air data sensors, we explore to develop a robust (accurate, scalable, explainable, and interpretable) FD scheme using a typical data-driven method, i.e., deep neural networks (DNN). To guarantee the scalability, aircraft inertial reference unit measurements are adopted as equivalent inputs to the ...
Tópico(s): Occupational Health and Safety Research
2022 - Hindawi Publishing Corporation | International Journal of Aerospace Engineering
Zhenwei Li, Yongmei Cheng, Wang Hui-bin, Huaxia Wang,
The false alarm of a fault detection module in aircraft will interfere with flight. If there is a time-offset between the inertial navigation system (INS) and air data system (ADS), the probability of a false alarm (PFA) of the fault detection module will increase, which is ignored in existing approaches. To address the problem, a fault detection approach is proposed applied to INS/ADS with a time-offset. An INS/ADS fault detection model based on kinematic equations is developed, and we combine an ...
Tópico(s): Maritime Navigation and Safety
2021 - Institution of Engineering and Technology | IET Radar Sonar & Navigation
Erwin A. Ulbrich, Curtis G. Walters,
... a sensor suite that encompasses a dual digital air data system, three separate inertial reference units, X-band weather radar, and radar altimeter. Satellite- ...
Tópico(s): Aerospace and Aviation Technology
1992 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
An effective way to detect the presence of a spoofing attack is to verify Global Navigation Satellite System (GNSS) data with measurements from other sensors, such as inertial navigation systems (INSs). In this article, uncoupled GNSS/INS-verification approaches are experimentally evaluated in an automotive context. The approaches are uncoupled in the sense that GNSS and INS sensors are operated independently without an exchange of information. The techniques considered are the magnitude verification ( ...
Tópico(s): GNSS positioning and interference
2020 - Institute of Electrical and Electronics Engineers | IEEE Intelligent Transportation Systems Magazine
The Global Positioning System (GPS) and velocity data were used to estimate flight load history. For the study, a SK60:072 aircraft equipped with and inertial measurement unit (IMU) and GPS receiver was used. It was suggested that the method of superimposing filtered IMU data from a reference aircraft shows promising results. It was also suggested that the number of occurrences using GPS data with superimposed higher frequency IMU data agrees well with the number of occurrences obtained using only ...
Tópico(s):
2004 - American Institute of Aeronautics and Astronautics | Journal of Aircraft
Ki-Hyeon Kwon, Hyung-Bong Lee,
... in sports activities and AHRS(Attitude and Heading Reference System) is a more cost effective solution than conventional high-grade IMUs (Inertial Measurement Units) that only integrate gyroscopes. In this paper, we attach the AHRS to the snowboard to measure the motion data like Air To Fakie, Caballerial and Free Style. In order ...
Tópico(s): Gait Recognition and Analysis
2016 - Korean Society of Computer Information | Journal of the Korea Society of Computer and Information
C Kamali, Amitabh Saraf, Abhay A. Pashilkar,
This paper presents an Extended Kalman Filter (EKF) based autonomous estimation technique to compute inertial velocities and attitudes of a fighter aircraft by fusing data from its linear acceleration sensors, rotation rate sensors and calibrated air data sensors. This technique is developed to monitor the health of signals from a simplex Inertial Navigation System (INS) installed on a high performance aircraft. Results using flight test data show good accuracy achieved for the computed parameters ...
Tópico(s): Aerospace and Aviation Technology
2012 - Elsevier BV | IFAC Proceedings Volumes
... offers its MEMS-based AHRS500GA attitude and heading reference system with the CRM500GA remote magnetometer option for those aircraft applications in which it is beneficial to have the magnetometer separated from the main unit. The AHRS500GA is a truly independent device, meaning that there is no need for Air Data or GPS inputs. Its highly reliable inertial system operates with static and dynamic accuracy that ...
Tópico(s): NMR spectroscopy and applications
2005 - AIP Publishing | Physics Today
Inertial navigation system is a self-contained navigation equipment which provides aircraft velocity and position data to ensure aircraft flight in a desired course to a selected destination.In the test of avionics equipment,adopting an inertial navigation simulator,complexity of test work can be reduced,and dynamic effect can be acquired better.Verification method of function control logic and displays for inertial navigation system is presented and the simulator software design technique is discussed ...
Tópico(s): Power Line Inspection Robots
2007 - Pergamon Press | Aircraft Design
Vlad Aurelian Vaduvescu, Teodor Lucian Grigorie, Petre Negrea, Costinel Laurentiu CORCAU,
The paper exposes the design, experimental development and testing of a hardware structure that integrates the two widely used concepts in air navigation, INS and GPS. Its detection components are an inertial module and a satellite positioning module, the data provided by them being fused with a microcontroller. The satellite positioning module is a UBLOX NEO-6M, while the inertial module, which is in fact an inertial measurement unit, includes three analogue miniaturized inertial sensors: two bi- ...
Tópico(s):
2019 - National Institute for Aerospace Research “Elie Carafoli” - INCAS | INCAS BULLETIN
L. Vallot, S. Snyder, Brian Schipper, N. Parker, Cary R. Spitzer,
A flight test project evaluating an integrated differential GPS (DGPS)/inertial navigation system as an approach/landing aid has recently been completed. The test objectives were to acquire a system performance database, and to demonstrate automatic landings using the integrated DGPS/inertial system augmented with barometric and radar altimeters. The airborne and ground components of the DGPS/inertial system are built around standard transport aircraft avionics: a global positioning/inertial reference ...
Tópico(s):
1991 - Wiley | NAVIGATION Journal of the Institute of Navigation
... Draper Laboratories for the Missile-X Inertial Measurement Unit (IMU) called the Advanced Inertial Reference Sphere (AIRS). These instruments are the Third Generation Gyroscope (TGG) ...
Tópico(s): GNSS positioning and interference
1979 - Wiley | NAVIGATION Journal of the Institute of Navigation
The 1965 inertial steering system evaluation was conducted by Pan American World Airways, the Bendix Corporation and Litton Systems, Inc. under the sponsorship of the Systems Research and Development Service of the Federal Aviation Agency. A Litton LN-12 inertial navigation system, together with a Bendix Corporation BANC 461 navigation course computer, was installed in a Pan American World Airways DC-8 aircraft. The DC-8 transport aircraft was operated on 55 scheduled transatlantic crossings plus ...
Tópico(s): Aerospace Engineering and Control Systems
1967 - Wiley | NAVIGATION Journal of the Institute of Navigation
... Ref Real-time magnetic disturbance determination for micro air vehicles via gravity and global navigation satellite system measurements18 January 2019 | Measurement Science and Technology, Vol. 30, No. 2 Cross Ref High-rate multi-GNSS attitude determination: experiments, comparisons with inertial measurement units and applications of GNSS rotational seismology to the 2011 Tohoku Mw9.0 earthquake18 January 2019 | Measurement Science and Technology, Vol. 30, No. 2 Cross Ref Unscented Kalman Filtering for Simultaneous Estimation of Attitude and Gyroscope BiasIEEE/ASME Transactions on Mechatronics, Vol. 24, No. 1 Cross Ref Secure Estimation for Attitude and Heading Reference Systems Under Sparse AttacksIEEE Sensors Journal, Vol. 19, ...
Tópico(s): Aerospace Engineering and Control Systems
1965 - Society for Industrial and Applied Mathematics | SIAM Review
G. Jeffrey Robinette, R. E. Witters,
... aircraft safety-of-flight and survivability constraints. The Air Force Wright Aeronautical Laboratories is conducting the Integrated Inertial Reference Assembly (IIRA) program to validate this new concept ...
Tópico(s): Target Tracking and
1982 - Wiley | NAVIGATION Journal of the Institute of Navigation
Walter L. Trudeau, Enrique Fernández‐Caldas,
... move in straight lines and will follow the air stream around the collecting surface. To overcome this most inertial samplers utilize a moving collection surface or vacuum ... collection, and like most aeroallergen samplers, are considered inertial impactors. Rotating arm impactors such as the Rotorod are not efficient collectors of particles less than 15 μm and are not adequate for quantification of most fungal spores.TABLE IICharacteristics of common air samplersSampler typeSamplerParticle size (μm)TimeRotating arm impactorRotorod>101 ...
Tópico(s): Insects and Parasite Interactions
1994 - Elsevier BV | Journal of Allergy and Clinical Immunology
... The 3DM-G, reportedly the smallest commercially available inertial measurement unit, features an angular velocity range of ±300°/s ( ... C-MIGITS is the company’s digital, quartz inertial-measurement unit, which incorporates micro-machined quartz rate sensors and vibrating quartz accelerometers. That unit is combined with a 12-channel coarse/acquisition-code global positioning system (GPS) receiver; the C-MIGITS can maintain accurate system navigation, even with the loss of GPS. Applications for the new miniature system include targets and drones, range instrumentation, long-haul commercial transportation, and helicopters. BEI Systron Donner Inertial Division, 2700 Systron Drive, Concord. California 94518–1399, ...
Tópico(s): Geophysics and Sensor Technology
2002 - AIP Publishing | Physics Today
Walter L. Trudeau, Enrique Fernández‐Caldas,
... move in straight lines and will follow the air stream around the collecting surface. To overcome this most inertial samplers utilize a moving collection surface or vacuum ... collection, and like most aeroallergen samplers, are considered inertial impactors. Rotating arm impactors such as the Rotorod are not efficient collectors of particles less than 15 μm and are not adequate for quantification of most fungal spores. TABLE IICharacteristics of common air samplersSampler typeSamplerParticle size (μm)TimeRotating arm impactorRotorod>101 ...
Tópico(s): Insects and Parasite Interactions
1994 - Elsevier BV | Journal of Allergy and Clinical Immunology
John C. Waldrep, Keyvan Keyhani, Melanie Black, Vernon Knight,
... FinlandVortran Medical Technology, IncHeart Heart10.0200241804 Tribute Rd Unit FSacramento, CA 95815 Open table in a new ... 50GSD±SD% Mouth and Throat% Generations 0-16†Reference 20.% Generations 17-23†Reference 20.% TotalBec, μg Recovery 2.5 min‡Mean ... mass median aerodynamic diameter; GSD = geometric standard deviation.† Reference 20.‡ Mean drug recovery on eight stages of ... aerosols have been studied, including the effect of air flow and pressure, changes in hygroscopicity resulting from ...
Tópico(s): Occupational exposure and asthma
1994 - Elsevier BV | CHEST Journal
Angelo Lerro, Alberto Brandl, Piero Gili,
... bold-italic capital letters (e.g., A). An inertial reference frame FI={XI,YI,ZI} is considered, ... XCV,YCV,ZCV}.Fig. 1 Representation of a) inertial and control volume reference frames, and b) body ... relative distance r between the aircraft and the inertial reference frame can be expressed as r=rB+ ... object both measured from the origin of the inertial one FI. In addition, the angular velocity of the frame FB with respect to the inertial frame FI is ω=pi^B+qj^B+ ... Recalling the time-derivative properties [26], in the inertial reference frame FI, the relationship between velocities can ...
Tópico(s):
2020 - American Institute of Aeronautics and Astronautics | Journal of Guidance Control and Dynamics
Shuai Jiang, Bingnan Wang, Maosheng Xiang, Xikai Fu, Xiaofan Sun,
... this study proposes an integrated interferometric SAR-aided inertial navigation system (InSAR/INS) based on interferogram matching. ... and many commercial solutions have been developed including inertial navigation system (INS) [1], satellite navigation system, terrain ... the optimal error estimation is used to modify inertial measurement unit (IMU) errors. Although SAR/INS [8] ... attitude. The international Synthetic Aperture Radar based augmented Inertial Navigation Architecture (SARINA) project [9], a collaboration of ...
Tópico(s):
2018 - Institution of Engineering and Technology | IET Radar Sonar & Navigation
Peng Lu, Laurens Van Eykeren, Erik-Jan Van Kampen, Coen C. de Visser, Q. P. Chu,
No AccessEngineering NoteAircraft Inertial Measurement Unit Fault Identification with Application to Real Flight DataP. Lu, L. Van Eykeren, E. van Kampen, C. C. ... and Monitoring of Oscillatory Failure Case in Aircraft Inertial System," Control Engineering Practice, Vol. 20, No. 12, ... 29] Lu P. and van Kampen E., "Aircraft Inertial Measurement Unit Fault Identification with Application to Real ...
Tópico(s): Control Systems and Identification
2015 - American Institute of Aeronautics and Astronautics | Journal of Guidance Control and Dynamics
Christian Seidel, Ingo Schwartz, Peter Kielhorn,
... range image data as well as altimeter and inertial reference information.
Tópico(s): Robotics and Sensor-Based Localization
2008 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE