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Using artificial intelligence to find anomalies hiding in massive datasets（图）
人工智能 数据集 机器学习技术 电网故障
2023/6/20
Identifying a malfunction in the nation’s power grid can be like trying to find a needle in an enormous haystack. Hundreds of thousands of interrelated sensors spread across the U.S. capture data on e...
GEOSPATIAL APPROACH FOR LANDSLIDE ACTIVITY ASSESSMENT AND MAPPING BASED ON VEGETATION ANOMALIES
Tropical rain forest Landslide activity egetation anomalies
2018/11/9
Remote sensing has been widely used for landslide inventory mapping and monitoring. Landslide activity is one of the important parameters for landslide inventory and it can be strongly related to vege...
AN AUTOMATIC ALGORITHM FOR MINIMIZING ANOMALIES AND DISCREPANCIES IN POINT CLOUDS ACQUIRED BY LASER SCANNING TECHNIQUE
Laser Scanning LiDAR Remote Sensing Point Cloud Return Intensity Edge Effect Quadtree Clustering
2016/11/11
Laser scanning technique from airborne and land platforms has been largely used for collecting 3D data in large volumes in the field of geosciences. Furthermore, the laser pulse intensity has been wid...
Community Epidemic Detection using Time-Correlated Anomalies
epidemic detection anomalies community
2016/5/24
An epidemic is malicious code running on a subset of a community,a homogeneous set of instances of an application. Syzygy is an epidemic detection framework that looks for time-correlated anomalies,i....
EFFICIENT DETECTION OF ANOMALIES IN HYPERSPECTRAL IMAGES
Hyperspectral Target detection Anomaly detection RX algorithm ROC
2015/12/30
By reason of recent advances in airborne and ground-base hyperspectral imaging technology, many applications have been developed. One of the most important hyperspectral images applications involves a...
Satellite magnetic anomalies of the Antarctic crust
Antarctic crust magnetic anomalies ADMAP satellite surveys airborne surveys
2015/9/28
Spatially and temporally static crustal magnetic anomalies are contaminated by static core field effects above spherical harmonic degree 12 and dynamic, large-amplitude external fields. To extract cru...
Two dimensional inverse scattering from buried magnetic anomalies
ground penetrating radar magnetic anomalies electromagnetic scattering microwave tomography linear inverse scattering
2015/9/1
This paper deals with the problem of the electromagnetic linear inverse scattering from magnetic anomalies
buried in a lossy half space, for a scalar and two dimensional case. First, the formulation ...
LAAS Study of Slow-Moving Ionosphere Anomalies and Their Potential Impacts
Ionosphere Anomalies Potential Impacts
2015/6/26
Triggered by several severe ionosphere storms that have occurred in recent years, research has been done to studying those anomalies, the physics behind them, and their potential impact on augmented G...
Prior Probability Model Development to Support System Safety Verification in the Presence of Anomalies
Prior Probability Model Development Support System Safety Verification
2015/6/26
Assessments of “prior probabilities” of faults that must be mitigated are essential to integrity and safety verification for safety-critical systems. In the case of Global Navigation Satellite System ...
Position-Domain Geometry Screening to Maximize LAAS Availability in the Presence of Ionosphere Anomalies
Geometry Screening LAAS Availability Presence Ionosphere Anomalies
2015/6/26
All fault modes in the Local Area Augmentation System should be mitigated within the specified integrity risk allocation to guarantee the safety of a landing aircraft.However, monitoring within the LA...
Low-Elevation Ionosphere Spatial Anomalies Discovered from the 20 November 2003 Storm
Low-Elevation Ionosphere Spatial Anomalies Discovered
2015/6/25
This paper presents data from low-elevation satellites on 20 November 2003 in the Ohio region, the area of the largest validated gradients seen to date. As viewed by multiple CORS stations in central ...
Dual-Frequency Smoothing for CAT III LAAS:Performance Assessment Considering Ionosphere Anomalies
Dual-Frequency Smoothing CAT III LAAS Considering Ionosphere
2015/6/25
Strong ionosphere storms are the most-threatening potential fault mode for the Local Area Augmentation System (LAAS). Multi-frequency GPS techniques are known to be an effective means of reducing or r...
Targeted Ephemeris Decorrelation Parameter Inflation for Improved LAAS Availability during Severe Ionosphere Anomalies
Targeted Ephemeris Decorrelation Parameter Inflation Improved LAAS Availability Ionosphere Anomalies
2015/6/25
The Local Area Augmentation System (LAAS) is a ground-based differential GNSS system designed to provide precision approach for aircraft landing at a LAAS-equipped airport.
The Impact and Mitigation of Ionosphere Anomalies on Ground-Based Augmentation of GNSS
Ionosphere Anomalies Ground-Based Augmentation GNSS
2015/6/25
This paper describes the impact that extreme ionospheric spatial gradients occurring during severe ionosphere storms have on GNSS Ground Based Augmentation Systems (GBAS) and how the U.S. Local Area A...
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...