Results 21 to 30 of about 9,662,076 (112)

A Novel Scattered Wave Deception Jamming Against Three Channel SAR GMTI

open access: yesIEEE Access, 2018
Many jamming methods have been proposed against three-channel synthetic aperture radar (SAR) ground moving target indication based on the stationary jammer.
Chunxi Dong, Xin Chang
doaj   +1 more source

Detection of Road Foreign Body Intrusion with Synthetic Aperture Radar

open access: yesMathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
Foreign body intrusion will cause interruption of road transportation and bring great threat to operation safety. Detection of foreign body intrusion is a key step for efficient recognition, location, and tracking of foreign body intrusion. Current detection approaches of foreign body intrusion are available, but can only detect in a certain range.
Lili Hou   +2 more
wiley   +1 more source

Enhancement of along-track interferometry for ground moving target indication

open access: yes, 2022
S.229-232Along-Track Interferometry (ATI) for the indication of moving targets with two channel Synthetic Aperture Radar (SAR) shows a low detection probability for a small number of looks. This paper proposes an enhancement called Better ATI (BATI).
Kohlleppel, R., Gierull, C.H.
core   +1 more source

Passive radar DPCA schemes with adaptive channel calibration [PDF]

open access: yes, 2020
This paper addresses the problem of direct signal interference (DSI) and clutter cancellation for passive radar systems on moving platforms employing displaced phase centre antenna (DPCA) approach.
Lombardo, Pierfrancesco   +4 more
core   +2 more sources

Spaceborne Regional Surveillance Ground Moving Target Indication Based on Squint-TOPSAR

open access: yesLeida xuebao, 2015
For military or civilian activities, it is important to monitor the direction of moving targets in a wide area. Traditional regional monitoring uses the airborne scanning mode (ScanSAR) within the limits of the national airspace.
Zeng Xiang-jie, Qi Xiang-yang
doaj   +1 more source

The application of the reciprocal filter and DPCA for GMTI in DVB-T - PCL

open access: yes, 2022
5 S.This paper addresses the problem of a passive radar system mounted on a moving platform with the purpose of Ground Moving Target Indication (GMTI).
Cristallini, D.   +4 more
core   +2 more sources

New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging

open access: yesInternational Journal of Antennas and Propagation, 2014
The high-resolution wide-swath (HRWS) SAR system uses a small antenna for transmitting waveform and multiple antennas both in elevation and azimuth for receiving echoes.
Yueguan Lin   +3 more
doaj   +1 more source

Meteorological clutter suppression method for ball‐borne radar based on Kalmus filter

open access: yesThe Journal of Engineering, Volume 2019, Issue 21, Page 7761-7765, November 2019., 2019
Aimed at the problem that the unmanned aerial vehicle (UAV) target is difficult to be detected in the meteorological clutter because of their close velocity, a new detection method is proposed for the ball‐borne radar based on Kalmus filter. Firstly, the radar echo is compressed by pulse compression.
Xiaohan Zhang   +4 more
wiley   +1 more source

Characterizing uncertainties in Doppler measurements using a displaced phase center antenna configuration on spaceborne weather radars

open access: yes, 2021
2021 Summer.Includes bibliographical references.The work presented in this thesis explores a new antenna configuration for accurately obtaining Doppler measurements from a spaceborne weather radar.
Chavéz, José, committee member   +3 more
core  

Doppler beam sharpening/ground moving target indication techniques based on space–time adaptive processing for airborne active phased array fire‐control radar

open access: yesThe Journal of Engineering, Volume 2019, Issue 19, Page 6048-6051, October 2019., 2019
In order to improve the angle accuracy and meet the requirement of side‐lobe blanking, the fire‐control radar system usually adopts sum beam, azimuth difference beam, elevation difference beam and several protecting antennas simultaneously. A ΣΔG‐STAP method based on sum, difference and protecting channels is proposed to improve the performance of ...
Xiaoming Li, Wei Gao, Xiaodong Han
wiley   +1 more source

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