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An Active Radar Interferometer Utilizing a Heterodyne Principle-Based Target Modulator [PDF]

open access: yesSensors
The Active Radar Interferometer (AcRaIn) represents a novel approach in secondary radar technology, aimed at environments with high reflective clutter, such as pipes and tunnels. This study introduces a compact design minimizing peripheral components and
Simon Müller   +2 more
doaj   +2 more sources

Not a Trade Union Body like a Trade Union Body (Legal, Linguistic and Application Pitfalls of Terminology in Collective Labour Law Relations) [PDF]

open access: yesSocietas et Iurisprudentia, 2020
Working for a trade union can take many forms. The Slovak Labour Code labels these forms in various terms, for example: ‘trade union function’, ‘a function in a trade union body’, ‘trade union activity’, ‘representative of employees function’, ‘trade ...
Jana Žuľová, Marek Švec
doaj   +1 more source

Terminology of the aerospace industry: systemic and structural features

open access: yesВестник Самарского университета: История, педагогика, филология, 2023
This article presents an attempt to describe systemic and structural features of contemporary English-language aerospace terminology. Relevance of this terminological system study is determined by rapid development of aerospace industry.
O. Yu. Ivanchina
doaj   +1 more source

Research of the possibility of increasing the uniqueness of determining the time delay of the phase-code shift keyed signal in a correlation meter on the basis of FPGA

open access: yesФизика волновых процессов и радиотехнические системы, 2023
Background. In radar systems, phase code-domain keying signals are widely used. Continuous signals of this kind have the advantage of low side lobes of the cross-correlation function and high noise immunity, but have limitations on the size of the area ...
Alexey V. Shirkaev, Andrey V. Nazarov
doaj   +1 more source

Deterministic recognizability of picture languages with Wang automata [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2010
special issue dedicated to the second edition of the conference AutoMathA: from Mathematics to ...
Violetta Lonati, Matteo Pradella
doaj   +1 more source

Azimuth Unambiguity Suppression for Low-oversampled Staggered SAR Images

open access: yesLeida xuebao, 2021
Low-oversampled staggered synthetic aperture radar can achieve continuously observed high-resolution and wide-swath imaging by utilizing the variable pulse repetition interval to distribute blind ranges.
Xingxing LIAO, Zhe LIU, Junjie WU
doaj   +1 more source

Dynamic interferometric measurement with extended unambiguity range in flow measurement [PDF]

open access: yesEPJ Web of Conferences, 2018
This paper reports on a new approach to measure dynamic processes in fluid mechanics using interferometry with extended dynamic range. A key factor is the use of two wavelengths and the recording of interferograms from both wavelengths in one frame ...
Psota Pavel   +3 more
doaj   +2 more sources

Cooperative radar with signature method for unambiguity [PDF]

open access: yesAdvances in Radio Science, 2019
The increasing availability of off-the-shelf high-frequency components makes radar measurement become popular in mainstream industrial applications. We present a cooperative FM radar for strongly reflective environments, being devised for a range of up ...
S. Müller, A. R. Diewald
doaj   +1 more source

On M-unambiguity of Parikh matrices

open access: yesIndonesian Journal of Combinatorics, 2020
The Parikh matrix mapping was introduced by Mateescu et al. in 2001 as a canonical generalization of the classical Parikh mapping. The injectivity problem of Parikh matrices, even for ternary case, has withstanded numerous attempts over a decade by ...
Wen Chean Teh
doaj   +1 more source

Suppression of grating lobes for MMW sparse array setups [PDF]

open access: yesAdvances in Radio Science, 2011
For arrays the placement of the single elements determines the angular resolution and the unambiguity interval. The width of the total array determines the resolution capabilities.
S. Bertl, A. Kirschner, J. Detlefsen
doaj   +1 more source

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