Results 11 to 20 of about 298,992 (250)

An innovative FPGA‐based low‐complexity and multi‐constellations compatible GNSS acquisition scheme

open access: yesIET Radar, Sonar & Navigation, 2021
There is a strong demand for the multi‐constellations compatible Global Navigation Satellite System (GNSS) acquisition scheme, since it is able to acquire signals from different constellations to increase availability of satellites. However, the presence
Tongsheng Qiu   +3 more
doaj   +1 more source

FBG-Based Matched Filters for Optical Processing of RF Signals

open access: yesIEEE Photonics Journal, 2012
We demonstrate the detection of RF pulses using complex matched filters implemented in photonics. The optical receiver consists of an intensity Mach-Zehnder modulator (MZM) for electrical-to-optical conversion as well as precisely tailored fiber Bragg ...
Mansour Dastmalchi   +3 more
doaj   +1 more source

Improved multiscale matched filter for retina vessel segmentation using PSO algorithm

open access: yesEgyptian Informatics Journal, 2015
The concept of matched filter is widely used in the area of retina vessel segmentation. Multiscale matched filters have superior performance over single scale filters.
K.S. Sreejini, V.K. Govindan
doaj   +1 more source

Impedance Matched Absorptive Thermal Blocking Filters [PDF]

open access: yes, 2014
We have designed, fabricated and characterized absorptive thermal blocking filters for cryogenic microwave applications. The transmission line filter's input characteristic impedance is designed to match $50\,\Omega$ and its response has been validated ...
Chuss, D. T.   +3 more
core   +3 more sources

Investigation of different target's micro-vibration feature based on a coherent shot-noise limited LIDAR

open access: yesThe Journal of Engineering, 2019
Light detection and ranging (LIDAR) has facilitated extraordinary advances in various areas such as remote-sensing, topography, atmospheric/ecological environment studies etc.
Chi Xu   +3 more
doaj   +1 more source

Improved high-precision approach based on deconvolution in MIMO sonar imagery

open access: yesThe Journal of Engineering, 2019
Multiple-input multiple-output (MIMO) sonar enables high-resolution imaging, which is extremely useful in underwater acoustic high-precision imagery.
Lu Yan, Shengchun Piao, Feng Xu
doaj   +1 more source

A novel secondary code acquisition algorithm for the BDS‐3 B1C signal

open access: yesIET Radar, Sonar & Navigation, 2021
The BDS‐3 recently started broadcasting a new civil B1C signal to provide open services for global users, which brings benefits to GNSS‐based applications.
Tongsheng Qiu   +4 more
doaj   +1 more source

MIMO noise radar - matched filters and coarrays [PDF]

open access: yes, 2008
Copyright © 2008 IEEEThe noise radar concept can be extended to an array of K transmit antenna and M receive antenna. When independent noise sources are transmitted from each antenna the approach may be viewed as a special case of MIMO radar and matched ...
Capria, A., Gray, D.
core   +1 more source

Matched Filters for Noisy Induced Subgraph Detection [PDF]

open access: yes, 2018
The problem of finding the vertex correspondence between two noisy graphs with different number of vertices where the smaller graph is still large has many applications in social networks, neuroscience, and computer vision.
Lyzinski, Vince   +3 more
core   +1 more source

Adaptive target detection against spatially correlated compound-Gaussian clutter with multivariate inverse Gaussian texture

open access: yesThe Journal of Engineering, 2019
To improve the detection performance in the presence of target-steering vector mismatches, a novel robust adaptive matched filter (AMF) detector for compound Gaussian clutter is proposed.
Xiaolin Zhang, Liang Yan, Quanhua Liu
doaj   +1 more source

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