Zobrazeno 1 - 10
of 974
pro vyhledávání: '"Signal modulation"'
Publikováno v:
Tongxin xuebao, Vol 45, Pp 180-193 (2024)
In order to generate high-quality electromagnetic signal countermeasure examples, a fast Jacobian saliency map attack (FJSMA) method was proposed.The Jacobian matrix of the attack target class was calculated and feature saliency maps based on the mat
Externí odkaz:
https://doaj.org/article/074cc49d5daf421c8d7b461c7bb231bf
Publikováno v:
Defence Technology, Vol 28, Iss , Pp 146-154 (2023)
Based on the scattering characteristic, the comparison of RCS (radar cross-section) at different positions of a target in the same direction of incidence can be obtained first by extruding or deleting part of the entity. A simulation method of aerial
Externí odkaz:
https://doaj.org/article/663162b26dff42a3829760d198ebc0d7
Publikováno v:
Remote Sensing, Vol 16, Iss 18, p 3542 (2024)
The modulation classification technology for radar intra-pulse signals is important in the electronic countermeasures field. As the high quality labeled radar signals are difficult to be captured in the real applications, the signal modulation classi
Externí odkaz:
https://doaj.org/article/d4af7e46d237469e83f84a81603c5d7a
Publikováno v:
Energies, Vol 17, Iss 18, p 4620 (2024)
This article presents the hitherto unknown concept of transient active power in two-terminal networks. This phenomenon occurs when current and voltage signals are not sinusoidal but quasi-sinusoidal—in the case of an approximation of transient stat
Externí odkaz:
https://doaj.org/article/bc69066e87974545aeaec76c3fd454b1
Autor:
Cristian Eugen Simion, Catalina Gabriela Mihalcea, Alexandra Corina Iacoban, Ion Viorel Dinu, Daniela Predoi, Ioana Dorina Vlaicu, Ovidiu Gabriel Florea, Adelina Stanoiu
Publikováno v:
Chemosensors, Vol 12, Iss 8, p 148 (2024)
This study investigates the influence of synthesis methods and electrode geometry on the physico-chemical properties of 5%Gd-doped SnO2. Two distinct synthesis routes, co-precipitation and hydrothermal growth, were employed, resulting in powders deno
Externí odkaz:
https://doaj.org/article/c329e13906e040de8a8435d679492ac3
Publikováno v:
Remote Sensing, Vol 16, Iss 14, p 2582 (2024)
Intrapulse modulation classification of radar signals plays an important role in modern electronic reconnaissance, countermeasures, etc. In this paper, to improve the recognition rate at low signal-to-noise ratio (SNR), we propose a recognition metho
Externí odkaz:
https://doaj.org/article/8d08d5493428487ba1cec56cc8f470f5
Publikováno v:
Photonics, Vol 11, Iss 7, p 592 (2024)
Microcantilever arrays are valuable tools for detecting minute physical and chemical changes. Traditional microcantilever array systems, including our previous work utilizing multiple laser arrays, frequently encounter high complexity, significant co
Externí odkaz:
https://doaj.org/article/ef90cf9449e04cef847ae956b008a6b0
Publikováno v:
Photonics, Vol 11, Iss 7, p 619 (2024)
In this paper, an innovative approach is introduced to address the noise issues associated with micro–cantilever array deflection measurement systems employing multiple lasers. Conventional systems are affected by laser mode hopping during switchin
Externí odkaz:
https://doaj.org/article/9364ee80e7bf4e67aed6027cde7f47b7
Autor:
Tianpei Xu, Ying Ma
Publikováno v:
IEEE Access, Vol 11, Pp 114623-114637 (2023)
With the advancement of 5G technology, wireless communication resources such as channels and spectrum become scarce. This necessitates ensuring the efficiency and security of signal modulation and demodulation, which imposes higher requirements for w
Externí odkaz:
https://doaj.org/article/dae183726bb84d40ae914cf4dda7629a
Publikováno v:
IEEE Access, Vol 11, Pp 66035-66049 (2023)
In an integrated sensing and communication (ISAC) system, improving the accuracy of delay and Doppler shift sensing parameter estimation is a critical task that sustains the performance of the communication system. To tackle this task, we introduce a
Externí odkaz:
https://doaj.org/article/76447dab8d374bc4aeeb00276c80dcb5