搜索结果: 1-15 共查到“飞行器控制、导航技术 Ionospheric”相关记录18条 . 查询时间(0.066 秒)
The most demanding application of wide area di erential corrections to GPS is vertical positioning of aircraft on precision approach. Here the Wide Area Augmentation System (WAAS) combines accuracy re...
Ionospheric Estimation and Integrity Threat Detection
Ionospheric Estimation Integrity Threat Detection
2015/6/29
A full realization of the Wide Area Augmentation System (WAAS) is intended to provide aircraft guidance throughout the en route, terminal, non-precision and precision approach phases of ight.
The Effects of Local Ionospheric Decorrelation on LAAS:Theory and Experimental Results
Local Ionospheric Decorrelation LAAS Theory Experimental Results
2015/6/29
Solar cycle 23 is expected to reach a maximum in the year 2000. This has produced a recent flurry of research about the possible adverse effects of the ionosphere on the millions of GPS users. The int...
Robust Detection of Ionospheric Irregularities
Robust Detection Ionospheric Irregularities
2015/6/29
The Wide Area Augmentation System (WAAS) will provide real-time differential GPS corrections and integrity information for aircraft navigation use. The most stringent application of this system will b...
The ionosphere is the largest remaining error source affecting GPS. It also has some of the least predictable spatial and temporal variations. As such the ionosphere becomes the determining factor in ...
Using WAAS Ionospheric Data to Estimate LAAS Short Baseline Gradients
WAAS Ionospheric Data Estimate LAAS Short Baseline Gradients
2015/6/26
The Local Area Augmentation System (LAAS) is intended to provide real-time differential GPS corrections with the high accuracy, availability, and integrity required for Category II/III landings. In or...
Nominally, the mid-latitude ionosphere sampled by WAAS is smooth and slowly varying. However,during ionospheric storms, small-scale irregularities may form. These irregularities cause rapid changes in...
Model Analysis on the Performance of an Inertial Aided FLL-Assisted-PLL Carrier-Tracking Loop in the Presence of Ionospheric Scintillations
Model Analysis Performance Inertial Aided FLL-Assisted-PLL Carrier-Tracking Loop Presence Ionospheric Scintillations
2015/6/25
Ionospheric scintillation has a significant impact on the availability of Global Positioning System (GPS) and Wide Area Augmentation System (WAAS), especially when the GPS/WAAS receiver is dynamically...
Performance of a Doppler-Aided GPS Navigation System for Aviation Applications under Ionospheric Scintillation
Performance Doppler-Aided GPS Navigation System Aviation Applications Ionospheric Scintillation
2015/6/25
Aircraft landing using the Global Positioning System (GPS) in equatorial regions is more difficult than in other regions because ionospheric scintillation is prevalent.Ionospheric scintillation causes...
Availability Benefit;Future Dual Frequency GPS Avionics;Ionospheric Scintillation
Availability Benefit Future Dual Frequency GPS Avionics Ionospheric Scintillation
2015/6/25
With the launch of the GPS-IIF satellites, the new civil navigation signals at L5 (1176.45 MHz) will become available to the GNSS community.One of the most significant benefits introduced by this new ...
Availability Benefit of Future Dual Frequency GPS Avionics under Strong Ionospheric Scintillation
Availability Benefit Future Dual Frequency GPS Avionics Ionospheric Scintillation
2015/6/25
A Global Positioning System (GPS) receiver may lose carrier tracking lock to the GPS signal under deep and frequent fades due to ionospheric scintillation. The frequent loss of lock observed during a ...
Enabling LAAS Airport Surface Movement:Mitigating the Anomalous Ionospheric Threat
LAAS DCPS airport surface movement anomalous ionosphere
2015/6/25
The Local Area Augmentation System (LAAS) can be used for both precision approach and Differentially Corrected Positioning Service (DCPS) applications. Through its support of DCPS, the LAAS Ground Fac...
GBAS Differentially Corrected Positioning Service Ionospheric Anomaly Errors Evaluated in an Operational Context
GBAS Differentially Corrected Positioning Service onospheric Anomaly Errors
2015/6/25
Tim Murphy is Technical Fellow with Boeing Commercial Airplanes where he is a member of the Electronic Systems organization. Tim has 25 years of experience in radio navigation communications and surve...
Long Term Monitoring of Ionospheric Anomalies to Support the Local Area Augmentation System
Long Term Monitoring Ionospheric Anomalies Local Area Augmentation System
2015/6/25
Extremely large ionospheric gradients can pose a potential integrity threat to the users of Local Area Augmentation System (LAAS), and thus the development of an ionospheric anomaly threat model is es...
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...