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Affine Registration of label maps in Label Space
Registration probabilistic atlas richly labeled images multi-object shape analysis
2015/7/15
Two key aspects of coupled multi-object shape analysis and atlas generation are the choice of representation and subsequent registration methods used to align the sample set. For example, a typical br...
Analysis of Digital Elevation Models Determined by High Resolution Space Images
matching high resolution satellite
2015/7/7
Digital Elevation Models (DEM) generated by automatic image matching of high resolution space images are used often for very
high resolution orthoimage production. The published accuracies of such DE...
Comparison of Information Contents of High Resolution Space Images
high resolution satellite mapping information analysis
2015/7/7
The information contents of high resolution space images, usable for mapping, are not only depending upon the image resolution
that means in case of digital data, depending upon the pixel size in the...
Generalization of 3D Building Data Based on a Scale-Space Approach
Generalization of 3D Building Data
2015/7/6
Generalization of 3D Building Data Based on a Scale-Space Approach.
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....
Ionosphere Spatial Gradient Threat for LAAS: Mitigation and Tolerable Threat Space
Ionosphere Spatial Gradient Threat LAAS:Threat Space
2015/6/26
The ionosphere spatial gradients under extreme conditions are likely to influence the LAAS architecture,particularly for Category II/III precision approach and landing systems. In previous study, a “m...
Ionospheric Threats to Space-Based Augmentation System Development
Ionospheric Threats Space-Based Augmentation System Development
2015/6/26
The ionosphere contributes the largest and most unpredictable error to single frequency GPS users’ range measurements. The goal of a Space-Based Augmentation System (SBAS) in mitigating these ionosphe...
Evaluation of Signal in Space Error Bounds to Support Aviation Integrity
Evaluation of Signal in Space Error Bounds to Support Aviation Integrity
2015/6/25
The modernization of GPS and the addition of new GNSS constellations bring forth a multitude of new signals with new capabilities. One of the intended purposes of some of these new signals is the prov...
Methodology and Case Studies of Signal-in-Space Error Calculation Top-down Meets Bottom-up
Signal-in-Space Error Calculation Top-down Meets Bottom-up
2015/6/25
Signal in space (SIS) errors are a major error source for the Global Positioning System (GPS). They are defined as any errors related to satellite transmission, mainly satellite position and clock err...
Evaluation of Signal in Space Error Bounds to Support Aviation Integrity
Evaluation Signal Space Error Bounds Support Aviation Integrity
2015/6/25
In order to make use of signals over which they have no control, aviation authorities must have a clear understanding of the commitments and capabilities of these new signals. This paper proposes equa...
GPS Signal-in-Space Anomalies in the Last Decade:Data Mining of 400,000,000 GPS Navigation Messages
GPS Signal-in-Space Data Mining GPS Navigation Messages
2015/6/25
For the Global Positioning System (GPS), signal-in-space(SIS) performance is key to the positioning accuracy and the integrity. In practice, SIS anomalies occasionally happens and the consequent user ...
Steffen Thoelert received his diploma degree in Electrical Engineering with fields of expertise in high-frequency engineering and communications at the University of Magdeburg in 2002. The next four y...
Statistical Characterization of GPS Signal-In-Space Errors
Statistical Characterization GPS Signal-In-Space Errors
2015/6/24
For most Global Positioning System (GPS) standard posi-tioning service (SPS) users, real-time satellite orbits and clocks are derived from predicted ephemeris and clock parameters in broadcast navigat...
GPS Signal-in-Space Integrity Performance Evolution in the Last Decade
GPS Signal-in-Space Integrity Performance Evolution Last Decade
2015/6/24
Knowledge of the Global Positioning System (GPS)signal-in-space (SIS) anomalies in history has a great importance for not only assessing the general performance of GPS SIS integrity but also validatin...
As GLONASS has fully restored its constellation, there is an increasing desire to use multiple constellations to im-prove positioning performance. Knowledge of GLONASS signal-in-space (SIS) error beha...