Results 21 to 30 of about 66,927 (344)

Analysis of the Borehole Effect in Borehole Radar Detection

open access: yesSensors, 2020
The directional borehole radar can accurately locate and image the geological target around the borehole, which overcomes the shortcomings that the conventional borehole radar can only detect the depth of the target and the distance from the borehole ...
Wentian Wang   +3 more
doaj   +1 more source

Structural Antennas for 3cm Radar Onboard Multi-Rotor UAV [PDF]

open access: yes, 2017
A series of 3cm amateur band radar antennas suitable for installation on a cinematic grade multi-rotor UAV were considered. A wideband open waveguide mouth antenna was developed that can be made from the existing arms of a multi-rotor UAV without any ...
Gray, D., Le Kernec, J.
core   +1 more source

Performance Analysis of Multiple Antennas Synthetic False Target Jamming

open access: yesIEEE Access, 2022
The radar jamming technology has been studied in this paper mainly, which uses the antenna synthetic wave to generate phase distortion at the signal reception to carry out angle measuring jamming, such as traditional cross-eye jamming. However, cross-eye
Yuhang Ning, Mengxia Yu
doaj   +1 more source

MU-MIMO Communications with MIMO Radar: From Co-existence to Joint Transmission [PDF]

open access: yes, 2017
Beamforming techniques are proposed for a joint multi-input-multi-output (MIMO) radar-communication (RadCom) system, where a single device acts both as a radar and a communication base station (BS) by simultaneously communicating with downlink users and ...
Hanzo, Lajos   +4 more
core   +2 more sources

Radar system with dedicated planar traveling wave antennas for elderly people monitoring [PDF]

open access: yesAdvances in Radio Science, 2020
Radar systems for contactless vital sign monitoring are well known and an actual object of research. These radar-based sensors could be used for monitoring of elderly people in their homes but also for detecting the activity of prisoners and to control ...
S. Schäfer   +3 more
doaj   +1 more source

Phased-MIMO Radar: A Tradeoff Between Phased-Array and MIMO Radars [PDF]

open access: yes, 2009
We propose a new technique for multiple-input multiple-output (MIMO) radar with colocated antennas which we call phased-MIMO radar. The new technique enjoys the advantages of MIMO radar without sacrificing the main advantage of phased-array radar which ...
Aboulnasr Hassanien   +2 more
core   +2 more sources

Cross-Hole GPR for Soil Moisture Estimation Using Deep Learning

open access: yesRemote Sensing, 2023
This paper presents the design of a high-voltage pulse-based radar and a supervised data processing method for soil moisture estimation. The goal of this research was to design a pulse-based radar to detect changes in soil moisture using a cross-hole ...
Blaž Pongrac   +3 more
doaj   +1 more source

Antenna Selection and Placement Analysis of MIMO Radar Networks for Target Localization

open access: yesInternational Journal of Distributed Sensor Networks, 2014
A distributed MIMO radar network consists of a large number of transmitters/receivers to cover a sensing area of interest but under the constraint that the number of antennas is limited. The problem of selecting a subset of antennas at a sampling time to
Bin Sun   +3 more
doaj   +1 more source

An Algorithm Based Wavelet Entropy for Shadowing Effect of Human Detection Using Ultra-Wideband Bio-Radar

open access: yesSensors, 2017
Ultra-wide band (UWB) radar for short-range human target detection is widely used to find and locate survivors in some rescue missions after a disaster.
Huijun Xue   +8 more
doaj   +1 more source

A Compact Rx Antenna Integration for 3D Direction-Finding Passive Radar [PDF]

open access: yesJournal of the Korean Institute of Electromagnetic Engineering and Science, 2019
A compact receiving (Rx) antenna integration for 3D direction-finding passive radar is proposed. The proposed antenna integration consists of two Yagi antennas and two waveguide slot antennas.
Hojoo Lee, Jaesik Kim, Jaehoon Choi
doaj   +1 more source

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