Results 21 to 30 of about 22,351,191 (312)

Modelling of continuously distributed target for bistatic synthetic aperture radar imaging

open access: yesThe Journal of Engineering, 2020
The point target model is widely used in the synthetic aperture radar (SAR) imaging simulation. Based on this model, the radar echo of a continuously distributed target can be expressed as the linear summation of the echo of many point targets which are ...
Xinliang Chen   +3 more
doaj   +1 more source

On-Board, Real-Time Preprocessing System for Optical Remote-Sensing Imagery

open access: yesSensors, 2018
With the development of remote-sensing technology, optical remote-sensing imagery processing has played an important role in many application fields, such as geological exploration and natural disaster prevention.
Baogui Qi   +4 more
doaj   +1 more source

Correlation tracking via robust region proposals

open access: yesThe Journal of Engineering, 2019
Recently, correlation filter-based trackers have received extensive researching interest because of their simplicity and superior running speed. However, such trackers perform poorly when the target undergoes occlusion, viewpoint change, or other ...
Yuqi Han   +4 more
doaj   +1 more source

A Diverse Space Target Dataset With Multidebris and Realistic On-Orbit Environment

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
As the number of space targets increases year by year, space situational awareness plays an important role in satellite security. To keep satellite secure, we use space target monitoring, removal, and avoidance to complete space situational awareness ...
Zipeng Zhang, Chenwei Deng, Zhiyuan Deng
doaj   +1 more source

Real-Time Stream Processing in Astronomy [PDF]

open access: yes, 2020
One of problems with ``Big Data'' is when large quantities of data have to be analyzed fast - (almost) in real time. So far in astronomy those situations were not very common. In the next few years a real time processing will become more relevant and the field should prepare for the advent of new instruments and techniques.
Vujčić, Veljko, Jevremović, Darko
openaire   +2 more sources

Implementation of a Hardware/Software Platform for Real-Timedata-Intensive Applications in Hazardous Environments [PDF]

open access: yes, 1996
Real-Time Technology and Applications Symposium. Brookline, MA, USA, 10-12 Oct. 1996In real-time data-intensive applications, the simultaneous achievement of the required performance and determinism is a difficult issue to address, mainly due to the time
García-Martínez, Alberto   +5 more
core   +1 more source

Optimal Data Acquisition and Height Retrieval in Repeat-Track Geosynchronous SAR Interferometry

open access: yesRemote Sensing, 2015
Geosynchronous synthetic aperture radar (GEO SAR) will move in a high orbit of ~36,000 km with a long integration time of hundreds of seconds. It is obviously impacted by orbital perturbations and the Earth’s rotation, which can give rise to un-parallel ...
Cheng Hu   +3 more
doaj   +1 more source

Recursion induction for real-time processes

open access: yesFormal Aspects of Computing, 1993
Abstract The theory of timed Communicating Sequential Processes is a mathematical approach to the design and analysis of timed distributed systems. This paper extends the language of timed CSP to include a general treatment of recursion. A semantics for mutual recursion is introduced, together with a sufficient condition for the necessary ...
Jim Davies, Steve A. Schneider
openaire   +4 more sources

Smart noise jamming suppression method based on fast fractional filtering

open access: yesThe Journal of Engineering, 2019
Smart noise jamming based on digital radio frequency memory (DRFM) has both oppressive jamming effect and deceptive jamming effect, and it is difficult to be effectively suppressed by traditional anti-jamming methods.
Bowen Han   +3 more
doaj   +1 more source

Mixed-Noise Band Selection for Hyperspectral Images

open access: yesIEEE Access, 2020
Hyperspectral images (HSIs) with abundant spectral information are generally susceptible to various types of noise, such as Gaussian noise and stripe noise.
Zhen Li, Chenwei Deng, Yun Huang
doaj   +1 more source

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