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POSITION ACCURACY ANALYSIS OF A ROBUST VISION-BASED NAVIGATION
Navigation Space Resection 3D map
2018/6/4
Using images to determine camera position and attitude is a consolidated method, very widespread for application like UAV navigation. In harsh environment, where GNSS could be degraded or denied, imag...
To account for the elastic nature of the sail cloth, this ow solver is coupled to NASTRAN to provide estimates of the de ections caused by the pressure loading. The results from the aeroelastic simul...
Many concepts have been proposed to increase the data rate of LORAN. Enhanced LORAN modulation schemes can provide many benefits to navigation including the transmission of GPS integrity information f...
LAAS Sigma-Mean Monitor Analysis and Failure-Test Verification
LAAS Sigma-Mean Monitor Analysis Failure-Test Verification
2015/6/29
The Local Area Augmentation System (LAAS) is a ground-based differential GPS system being developed to support aircraft precision approach and landing navigation with guaranteed integrity. Stanford Un...
Analysis of a Three-Frequency GPS/WAAS Receiver to Land an Airplane
Three-Frequency GPS/WAAS Receiver Land an Airplane
2015/6/26
This paper investigates the vertical guidance performance of a multiple frequency Global Positioning System (GPS) (L1, L2, and L5)/Wide Area Augmentation System (WAAS) receiver in the presence of incl...
Performance Analysis and Architectures for INS-Aided GPS Tracking Loops
Performance Analysis Architectures INS-Aided GPS Tracking Loops
2015/6/26
Santiago Alban is a Ph.D. candidate in the Aeronautics and Astronautics Department of Stanford University. He received his B.S. in Aerospace Engineering in 1996 from the University of Texas at Austin,...
Loran Integrity Analysis for Required Navigation Performance 0.3
Loran Integrity Analysis Required Navigation Performance 0.3
2015/6/26
The Loran Integrity Performance Panel (LORIPP) completed its 18 month study of the ability of Loran to meet aviation requirements for Required Navigation Performance 0.3 (RNP 0.3) in March 2004. The s...
Loran Availability and Continuity Analysis for Required Navigation Performance 0.3
Loran Availability Continuity Analysis Required Navigation Performance
2015/6/26
The Loran Integrity Performance Panel (LORIPP) is to complete its 18-month study of whether an enhanced Loran system, which includes modernized equipment, new receiving equipment, and updated operatin...
The Joint Precision Approach and Landing System (JPALS) is being developed to provide navigation to support aircraft landings for the U.S. military. One variant of this is sea based JPALS, which will ...
Performance Analysis and Experimental Validation of a Doppler-Aided GPS/INS Receiver for JPALS Applications
Doppler-Aided GPS/INS Receiver JPALS Applications
2015/6/26
The Joint Precision Approach and Landing System (JPALS) is the next generation aircraft precision approach and landing system being sponsored by US Department of Defense. This GPS-based system will pr...
Can WAAS Availability Be Inferred From Geomagnetic Data? An Analysis
WAAS Availability Geomagnetic Data
2015/6/26
The Federal Aviation Administration’s Wide Area Augmentation System (WAAS) provides high integrity GPS-based precision navigation service to users in the conterminous United States (CONUS). User integ...
Field Data Analysis for a Range-Based Local Airport Monitor for WAAS
Field Data Analysis Range-Based Local Airport Monitor WAAS
2015/6/26
The Local Airport Monitor (LAM) concept has been proposed as an inexpensive and rapidly deployable implementation of LAAS. The LAM combines WAAS corrections with local monitoring to provide an error b...
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...
Ephemeris Type A Fault Analysis and Mitigation for LAAS
Ephemeris Type Fault Analysis Mitigation LAAS
2015/6/25
The Local Area Augmentation System (LAAS) has been developed by the FAA to enable precision approach and landing operations using the Global Positioning System (GPS). Each LAAS installation provides s...
COMPARISON AND ANALYSIS OF NONLINEAR LEAST SQUARES METHODS FOR VISION BASED NAVIGATION (VBN) ALGORITHMS
UAV Nonlinear Optimization Vision Based Navigation
2014/4/25
A robust scale and rotation invariant image matching algorithm is vital for the Visual Based Navigation (VBN) of aerial vehicles, where matches between an existing geo-referenced database images and t...