搜索结果: 16-30 共查到“航空、航天科学技术 systems”相关记录45条 . 查询时间(0.2 秒)
Optimal Control of LCOs in Aero-Structural Systems
Optimal Control LCOs Aero-Structural Systems
2015/7/2
Aero-elastic systems, by their very nonlinear nature, frequently encounter Limit Cycle Oscillations (LCOs). An LCO occurs when the system being described reaches a periodic steady state where there is...
An Efficient Multiblock Method for Aerodynamic Analysis and Design on Distributed Memory Systems
Efficient Multiblock Method Aerodynamic Analysis Design Distributed Memory Systems
2015/7/1
The work presented in this paper describes the application of a multiblock gridding strategy to the solution of aerodynamic design optimization problems involving complex configurations. The design pr...
The optimization of linear systems will be considered, subject to restrictions on the form of the control.
An Integrity Equation for Use with Space Based Augmentation Systems
Integrity Equation Space Based Augmentation Systems
2015/6/29
In recent years there has been widespread growth in the number of proposed Space Based Augmentation Systems (SBAS). Such systems are being developed by both civil authorities and commercial interests....
Real Time Calibration of Antenna Phase Errors for Ultra Short Baseline Attitude Systems
Real Time Calibration Antenna Phase Errors Ultra Short Baseline Attitude Systems
2015/6/29
Ultra short baseline attitude systems with base lines under 0.5 meters are desirable for any application which requires a high level of integrity. The higher level of integrity is a direct result of t...
Interoperation and Integration of Satellite Based Augmentation Systems
Interoperation Integration Satellite Based Augmentation Systems
2015/6/29
In recent years there has been widespread growth in the independent development of Satellite Based Augmenta tion Systems (SBASs). The Federal Aviation Admini stration’s Wide Area Augmentation System (...
GPS Supplemental Navigation Systems for Use During the Transition to a Sole-Means-GPS National Airspace System
GPS Supplemental Navigation Systems Sole-Means-GPS National Airspace System
2015/6/29
The current Federal Radio Navigation Plan presents a plan that includes phasing out of existing radio-navigation aids as part of the transition to sole-means-GPS navigation in the United States. GPS b...
A Real-Time Signal Quality Monitor For GPS Augmentation Systems
Real-Time Signal Quality Monitor GPS Augmentation Systems
2015/6/29
The Local Area Augmentation System (LAAS) and the Wide Area Augmentation System (WAAS) are ground based applications of differential GPS to support aircraft terminal navigation and precision approach.
A DME Based Area Navigation Systems for GPS/WAAS Interference Mitigation In General Aviation Applications
DME Based Area Navigation Systems GPS/WAAS Interference Mitigation Aviation Applications
2015/6/29
The Federal Aviation Administration is leading the National Airspace System modernization e ort, in part by supplanting traditional air trac services with GPS aided by the Wide and Local Area Aug- me...
Formulation of a Time-Varying Maximum Allowable Error for Ground-Based Augmentation Systems
Time-Varying Maximum Allowable Error Ground-Based Augmentation Systems
2015/6/26
Ground-Based Augmentation Systems (GBAS), such as the Federal Aviation Administration’s Local Area Augmentation System (LAAS), ensure integrity by enabling users to compute a conservative navigation e...
L5 Satellite Based Augmentation Systems Protection Level Equations
L5 Satellite Based Augmentation Systems Level Equations
2015/6/25
The current L1 Space Based Augmentation System (SBAS) protection level equations were agreed upon nearly a decade ago. These equations are provided for L1-only users and are based upon covariance prop...
Using Loran for Broadcast of Integrity Information for Modernized Global Navigation Satellite Systems (GNSS)
Using Loran Broadcast Integrity Information Modernized Global Navigation Satellite Systems (GNSS)
2015/6/25
The United States (US) Federal Aviation Administration (FAA) has been examining the potential of using an enhanced Loran (eLoran) to provide back up for aviation. The 2004 FAA Loran technical evaluati...
This paper presents novel Global Navigation Satellite System (GNSS)-based flight inspection systems (FIS) that outperform current flight inspection systems in terms of cost, efficiency, and integrity.
Efficient authentication mechanisms for navigation systems–a radio-navigation case study
authentication mechanisms navigation systems radio-navigation
2015/6/25
In this paper we introduce an efficient authentication mechanism especially designed for navigation systems that is based upon the Timed Efficient Stream Loss-Tolerant Authentication (TESLA) algorithm...
Ionospheric Threat Parameterization for Local Area Global-Positioning-System-Based Aircraft Landing Systems
Ionospheric Parameterization Local Area Global-Positioning-System-Based Aircraft Landing Systems
2015/6/25
Observations of extreme spatial rates of change of ionospheric electron content and the characterization strategy for mitigation applied by the U.S. local area augmentation system are shown. During ex...