Zobrazeno 1 - 10
of 958
pro vyhledávání: '"echo-signal"'
Publikováno v:
水下无人系统学报, Vol 31, Iss 5, Pp 703-709 (2023)
It is an important way to study the ship wake by building simulation data through the acoustic wake echo signal model. At present, the scattering echo of a single bubble is ignored in the existing models. Therefore, a point scattering model for diffe
Externí odkaz:
https://doaj.org/article/87ea150b30844a199d02296bdd4af6f6
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 15, p 2811 (2024)
In detecting hypersonic vehicles, the radar echo signal is coupled with an intra-pulse Doppler frequency (I-D frequency) component caused by relative motion of a plasma sheath (PSh) and the vehicle, which can induce the phenomenon of a ghost target i
Externí odkaz:
https://doaj.org/article/082b3486ba62486cb95fc69ea182323a
Publikováno v:
Applied Mathematics and Nonlinear Sciences, Vol 9, Iss 1 (2024)
The echo signals of the radar in complex backgrounds are often very unstable and thus require effective noise cancellation. In this paper, according to the characteristics of continuous wavelet variation and discrete wavelet variation, the decomposit
Externí odkaz:
https://doaj.org/article/6d05c80eae7f45919f86bd7bc2e44ffe
Publikováno v:
Acoustics, Vol 5, Iss 2, Pp 509-521 (2023)
A numerically efficient technique is presented for computing the backscattered fields from two spherical targets embedded in an underwater sediment. The bottom is assumed to be a homogeneous liquid attenuating half-space. The transmitter/receiver is
Externí odkaz:
https://doaj.org/article/3b4b54c5dde84b99a4f8b529833bbe86
Publikováno v:
Remote Sensing, Vol 16, Iss 12, p 2157 (2024)
In practical radar applications, the diversity of wideband transmission signals presents a significant challenge for radar target recognition systems. Traditional electromagnetic (EM) simulation methods often require the point-by-point sampling of ta
Externí odkaz:
https://doaj.org/article/99f09ef357524aa3ba8e0e70f247b442
Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 5, p 727 (2024)
The maritime airborne corner reflector (ACR) is a radar reflector that can measure wind speed in an unknown sea area in real time over a long distance. To improve our understanding of how the ACR works, we investigated the Doppler characteristics of
Externí odkaz:
https://doaj.org/article/519d2bc2ceb7480abf39009a7452aa97
Autor:
Jie Wu, Xiaoqian Zhang
Publikováno v:
IEEE Access, Vol 11, Pp 131168-131177 (2023)
With the rapid development of laser fuze technology, the ability of fuze to recognize target has become increasingly important. To effectively improve the recognition rate of laser fuze against interference signal and target signal, based on the two-
Externí odkaz:
https://doaj.org/article/750512ec1a64457993bdceb5f8270a98
Publikováno v:
水下无人系统学报, Vol 30, Iss 6, Pp 774-786 (2022)
High-confidence underwater acoustic go-back channel modeling is an essential part of the study of target echo simulation and plays an important role in the development of underwater operation equipment. Based on the classical channel model and reason
Externí odkaz:
https://doaj.org/article/1a23649b3ff24a34bbb0b458930ca432
Publikováno v:
水下无人系统学报, Vol 30, Iss 5, Pp 612-620 (2022)
Under the tide led by artificial intelligence, the application of deep learning methods in underwater target recognition has gained increasing attention. However, obtaining underwater sample data from actual scientific research is extremely difficult
Externí odkaz:
https://doaj.org/article/0a0f2a66d1f64f16ba9aa00761f92662