Results 21 to 30 of about 1,479,365 (284)

Tracking the Tracker from its Passive Sonar ML-PDA Estimates [PDF]

open access: yes, 2013
Target motion analysis with wideband passive sonar has received much attention. Maximum likelihood probabilistic data-association (ML-PDA) represents an asymptotically efficient estimator for deterministic target motion, and is especially well-suited for
Bar-Shalom, Y.   +2 more
core   +1 more source

SAR deceptive jamming target-detection method based on multi-angle SAR images

open access: yesThe Journal of Engineering, 2019
Deceptive jamming is an effective jamming method for synthetic aperture radar (SAR). Time-delay repeater jamming, which is an important method of deceptive jamming because of its simplicity and effectiveness, can generate false targets in the SAR image ...
Gen Li   +5 more
doaj   +1 more source

Fast target deception jamming method against spaceborne synthetic aperture radar based on equivalent bistatic scattered fields

open access: yesThe Journal of Engineering, 2019
To achieve verisimilar target deceptive jamming effect, the jamming signals from different targets in different kinds of situation must be acquired. However, it is difficult to be implemented by the methods using deception-template model. In this letter,
Qingyang Sun   +3 more
doaj   +1 more source

Frequency-Hopping Frequency-Diverse MIMO Radar for Target Detection and Localization Under False-Target Jamming

open access: yesIEEE Access, 2023
A novel FH-LFM-FD-MIMO radar system is proposed to detect and localize true targets while suppressing false-target jamming signals. Linear frequency modulated (LFM) pulses are transmitted by a transmit array, with the carrier frequencies optimized to ...
Chia-Liang Hsin, Jean-Fu Kiang
doaj   +1 more source

Validation of Kepler's Multiple Planet Candidates. III: Light Curve Analysis & Announcement of Hundreds of New Multi-planet Systems [PDF]

open access: yes, 2014
The Kepler mission has discovered over 2500 exoplanet candidates in the first two years of spacecraft data, with approximately 40% of them in candidate multi-planet systems.
Agol, Eric   +28 more
core   +2 more sources

Dissociating the effect of disruptive colouration on localisation and identification of camouflaged targets [PDF]

open access: yes, 2018
Disruptive camouflage features contrasting areas of pigmentation across the animals’ surface that form false edges which disguise the shape of the body and impede detection.
Lovell, P. George   +2 more
core   +4 more sources

Deceptive Jamming Method with Micro-motion Property Against ISAR [PDF]

open access: yesRadioengineering, 2017
Airborne target's micro-motion such as rotation or vibration causes phase modulation, termed as micro-Doppler effect, into radar signals. The feature of micro-motion is one of the most obvious features for radar recognition in mid-course phase.
N. Tai, C. Wang, L. Liu, W. Wu, N. Yuan
doaj  

Joint Tracking and Recognition Method for Ballistic Targets and False Targets Based on Fine Difference Feature Estimation of Motion Pattern Set [PDF]

open access: yesHangkong bingqi
Aiming at the difficulty of tracking and recognizing ballistic targets and active multi-false targets in the presence of countermeasures, a joint tracking and recognition method for ballistic targets and false targets based on the robust interacting ...
Cai Guiquan, Rao Bin, Song Dan
doaj   +1 more source

An Anti-2D Deceptive Jamming Method for Multi-Baseline Interferometric SAR Based on Co-Localization Jammer

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Aimed at the problem that range-azimuth joint jamming can effectively generate high fidelity false targets in synthetic aperture radar (SAR) images, an anti-2D deceptive jamming method for multibaseline interferometric SAR is proposed in this article ...
Wenhui Lang   +4 more
doaj   +1 more source

Impact of random outliers in auto-segmented targets on radiotherapy treatment plans for glioblastoma

open access: yesRadiation Oncology, 2022
Aims To save time and have more consistent contours, fully automatic segmentation of targets and organs at risk (OAR) is a valuable asset in radiotherapy.
Robert Poel   +7 more
doaj   +1 more source

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