Results 21 to 30 of about 333,204 (200)

Gunshots Localization and Classification Model Based on Wind Noise Sensitivity Analysis Using Extreme Learning Machine

open access: yesIEEE Access, 2022
The gunshot event localization and classification have numerous real-time applications. The study is also useful for steering the video camera and guns in the directed direction.
Shahzad Ahmad Qureshi   +9 more
doaj   +1 more source

ON THE ACHIEVABLE UPPER LIMIT OF THE ELEVATION ANGLES OF EFFECTIVE DIRECTION FINDING OF TARGETS OVER THE SEA BY THE ROOT-MUSIC METHOD PROVIDED WITH ADEQUATE A PRIORI PARAMETERS [PDF]

open access: yesRadio Physics and Radio Astronomy
Subject and Purpose. The paper investigates the accuracy of measurements of the elevation angles of targets located near the surface of a disturbed sea in the area from the upper limit of their extremely small values to the free space zone.
Yu. F. Logvinov   +2 more
doaj   +1 more source

A low profile radiating element with nearly hemispheric coverage for satellite communications on-the-move hybrid array antenna [PDF]

open access: yes, 2010
A novel design solution of a dual-linearly polarised Ku-band low-profile radiating element for low elevation angle coverage (down to 10° above horizon) is presented. Such an element is suitable for full-duplex Satellite Communications On-The-Move (SCOTM)
Foti, Steve   +3 more
core   +1 more source

ESTIMATING THE SECTION ELEVATION ANGLE OF CUBES ON A CUBIC MESH. APPLICATION TO NICKEL MICROSTRUCTURE SIZE ESTIMATION

open access: yesImage Analysis and Stereology, 2011
This paper discusses two new image analysis methods for estimating the elevation angle of the section plane of a material. These methods are applicable to materials such as nickel base superalloys, the microstructure of which shows cubes arranged on a ...
Christian Germain   +5 more
doaj   +1 more source

Effects of elevation on shoulder joint motion: comparison of dynamic and static conditions [PDF]

open access: yesClinics in Shoulder and Elbow, 2023
Background Although visual examination and palpation are used to assess shoulder motion in clinical practice, there is no consensus on shoulder motion under dynamic and static conditions.
Takaki Imai   +6 more
doaj   +1 more source

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

open access: yesSensors, 2021
Unmanned aerial vehicle (UAV) antenna tracking system is an electromechanical component designed to track and steer the signal beams from the ground control station (GCS) to the airborne platform for optimum signal alignment.
Anabi Hilary Kelechi   +7 more
doaj   +1 more source

Modeling the Distribution of Solar Radiation on a Two-Axis Tracking Plane for Photovoltaic Conversion

open access: yesEnergies, 2015
The paper presents selected isotropic and anisotropic mathematical models to calculate the distribution of solar radiation on the photovoltaic module plane with any spatial orientation.
Grażyna Frydrychowicz-Jastrzębska   +1 more
doaj   +1 more source

Analysis of Different Weighting Functions of Observations for GPS and Galileo Precise Point Positioning Performance

open access: yesRemote Sensing, 2022
This research presents the analysis of using different weighting functions for the GPS and Galileo observations in Precise Point Positioning (PPP) performance for globally located stations for one week in 2021.
Damian Kiliszek   +2 more
doaj   +1 more source

The Application of Space Vector in Calculation of Plinth Elevation Angle [PDF]

open access: yesE3S Web of Conferences, 2021
The plinth elevation angle was related to the upstream slope and face slab shape of CFRD, as well as to the dam axis, which was very important in plinth design.
Deng Fang   +3 more
doaj   +1 more source

Study of Azimuth Angle and Elevation Angle Variations of IRNSS/NavIC Signals [PDF]

open access: yesUniversal Journal of Electrical and Electronic Engineering, 2019
The IRNSS satellite network covers a large area of the India with 7 satellites, 3 geostationary and 4 that are geosynchronous. IRNSS signals are transmitted in the L5 and S-Bands. The L5 band frequencies range from 1164.45-1188.45 MHz and the S band frequencies range of 2483.5-2500 MHz.
Sruthi Samyuktha Sathyana   +4 more
openaire   +1 more source

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