Results 141 to 150 of about 71,530 (301)
Space Weather, Volume 23, Issue 10, October 2025.Abstract During the main phase of the May 2024 super geomagnetic storm, we investigated large‐scale traveling ionospheric disturbances (LSTID) using data from densely distributed global GNSS receivers. From both two‐dimensional and three‐dimensional (3D) perspectives, we analyzed LSTID propagation characteristics over North America, European, and ...
Ting Zhang +4 more
wiley +1 more source
Doppler Radar Systems for Helicopters
Navigation, 1980 Simple Doppler radar dead-reckoning navigation systems of medium accuracy (l-2%) have recently been developed for helicopters, and are now being applied extensively. Helicopters because of their low cost and large numbers, cannot afford the more sophisticated costly navigation systems used in larger fixed-wing aircraft. Doppler radar navigation systems
openaire +2 more sources
Pedestrian and Animal Recognition Using Doppler Radar Signature and Deep Learning. [PDF]
Sensors (Basel), 2022 Buchman D +4 more
europepmc +1 more source
Acquisition and use of Orlando, Florida and Continental Airbus radar flight test data [PDF]
Westinghouse is developing a lookdown pulse Doppler radar for production as the sensor and processor of a forward looking hazardous windshear detection and avoidance system.
Eide, Michael C., Mathews, Bruce
core +1 more source
Synthetic aperture radar target simulator [PDF]
, 1984 A simulator for simulating the radar return, or echo, from a target seen by a SAR antenna mounted on a platform moving with respect to the target is described.
Bickler, T. C. +3 more
core +1 more source
Space Weather, Volume 23, Issue 10, October 2025.Abstract We present an analysis of thermal and dynamical structures in the mesopause and lower thermosphere (MLT) region (82–106 km) using ∼1,870 hr of sodium (Na) lidar observations at Yuzhong (36.0°N, 104.2°E) from March 2023 to May 2025. Mesopause altitudes exhibit strong seasonal dependence, ranging from 88 km in summer to 102 km in winter, with ...
Linmei Liu +10 more
wiley +1 more source
Exploration of Effective Time-Velocity Distribution for Doppler-Radar-Based Personal Gait Identification Using Deep Learning. [PDF]
Sensors (Basel), 2023 Shioiri K, Saho K.
europepmc +1 more source
A Technique for Obtaining Detailed Wind Fields in a Frontal System from a Single-Doppler Radar [PDF]
, 1978 John D. Locatelli, Peter V. Hobbs
openalex +1 more source
Water Resources Research, Volume 61, Issue 10, October 2025.Abstract Frozen rivers serve as important transportation corridors for Alaskans during winter. Open water zones (OWZs, i.e., open leads) in otherwise ice‐covered rivers present a hazard because their location and causes are poorly understood. We studied one persistent OWZ on the Tanana River near Fairbanks using field studies, remote sensing, and ...
Matthew Scragg +5 more
wiley +1 more source