Results 21 to 30 of about 71,675 (317)

Velocity Dealiased Spectral Estimators of Range Migrating Targets using a Single Low-PRF Wideband Waveform [PDF]

open access: yes, 2013
Wideband radars are promising systems that may provide numerous advantages, like simultaneous detection of slow and fast moving targets, high range-velocity resolution classification, and electronic countermeasures.
Bidon, Stéphanie   +3 more
core   +1 more source

Towards a hardware implementation of ultra-wideband beamforming [PDF]

open access: yes, 2010
This paper discusses and analyses the hardware implementation of an ultra-wideband (UWB) beamformer for UWB Impulse Radio data transmission. We use a Complex Programmable Logic Device (CPLD) acting as the binary baseband information source.
Wolfgang Gartner   +9 more
core   +1 more source

Resonance-Based Reflector and Its Application in Unidirectional Antenna with Low-Profile and Broadband Characteristics for Wireless Applications

open access: yesSensors, 2016
In this research, the novel concept of a resonance-based reflector (RBR) was proposed, and a ring-shaped RBR was utilized to design a unidirectional antenna with low-profile and broadband characteristics.
Lin Peng   +4 more
doaj   +1 more source

Ultra-wideband Concurrent Ranging [PDF]

open access: yesACM Transactions on Sensor Networks, 2020
We propose a novel concurrent ranging technique for distance estimation with ultra-wideband (UWB) radios. Conventional schemes assume that the necessary packet exchanges occur in isolation to avoid collisions. Concurrent ranging relies on the overlapping of replies from nearby responders to ...
Pablo Corbalán, Gian Pietro Picco
openaire   +3 more sources

Fully Conventional Anchor-Free Siamese Networks for Object Tracking

open access: yesIEEE Access, 2019
Siamese network have been extensively applied in the tracking field because of its huge speed advantage and great precision performance in solving the tracking problems. In this paper, we propose an efficient framework for real-time object tracking which
Guang Han   +4 more
doaj   +1 more source

Joint Estimation of Azimuth and Distance for Far-Field Multi Targets Based on Graph Signal Processing

open access: yesRemote Sensing, 2022
Target position estimation is one of the important research directions in array signal processing. In recent years, the research of target azimuth estimation based on graph signal processing (GSP) has sprung up, which provides new ideas for the Direction
Kefei Liao   +3 more
doaj   +1 more source

Feature Fusion and Adversary Occlusion Networks for Object Detection

open access: yesIEEE Access, 2019
Current object detection techniques have difficulties in detecting small objects and a low level of accuracy in detecting occluded objects. To solve these problems, this paper proposes an object detection framework named FFAN which is based on Faster R ...
Guang Han   +4 more
doaj   +1 more source

Adapting Dynamic Appearance for Robust Visual Tracking

open access: yesIEEE Access, 2017
This paper designs a robust discriminative tracking method based on correlation filter and key point matching, the highlight of which is the ability to adapt appearance changes.
Guang Han   +4 more
doaj   +1 more source

Rayleigh wave manipulation based on phase shift between two periodic surface corrugations

open access: yesResults in Physics, 2023
The propagation of Rayleigh waves along solid surfaces has attracted great attention due to its ubiquity in seismic waves, non-destructive evaluation, acoustic surface wave devices, and so on.
Qiao-Mu Zhang   +6 more
doaj   +1 more source

Localization of Wearable Ultra Wideband Antennas for Motion Capture Applications [PDF]

open access: yes, 2014
This paper presents a study of human body localisation using Ultra Wideband (UWB) technology. Various base station configurations, time of arrival and first peak detection algorithms are used to estimate the position of body-worn antennas.
Batchelor, John C.   +4 more
core   +1 more source

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