Zobrazeno 1 - 10
of 292
pro vyhledávání: '"Doppler ambiguity"'
Forward-looking Multi-channel Synthetic Aperture Radar Imaging and Array Attitude Error Compensation
Publikováno v:
Leida xuebao, Vol 12, Iss 6, Pp 1155-1165 (2023)
To solve the problem of left-right Doppler ambiguity in forward-looking Synthetic Aperture Radar (SAR) imaging, Forward-Looking Multi-Channel SAR (FLMC-SAR) can achieve Doppler ambiguity resolving imaging through beamforming. However, array deviation
Externí odkaz:
https://doaj.org/article/b62865855ebc4984aaedf5906c3d7b87
Publikováno v:
Remote Sensing, Vol 16, Iss 11, p 2039 (2024)
The unknown relative motions between synthetic aperture radar (SAR) and a ground moving target will lead to serious range cell migration (RCM) and Doppler frequency spread (DFS). The energy of the moving target will defocus, given the effect of the R
Externí odkaz:
https://doaj.org/article/cafe4557b8984df6afa7e19bd248b5ee
Publikováno v:
Radioengineering, Vol 32, Iss 1, Pp 160-167 (2023)
In this paper, a novel coherent integration algorithm, i.e., two-dimensional frequency domain second-order keystone transform (FDSOKT), is proposed to detect a weak maneuvering target based on bistatic radar configuration. To eliminate range migratio
Externí odkaz:
https://doaj.org/article/aad3a6e9007a4dc997e3ab475e9c538d
Publikováno v:
Remote Sensing, Vol 16, Iss 9, p 1597 (2024)
The looking-down mode of space airship bistatic radars faces complex sea–land clutter, and the mode of wide-range surveillance and the over-sight detection of the satellite platform generates a low SNR and range–Doppler ambiguity. The method trad
Externí odkaz:
https://doaj.org/article/5a8e9ff9a969498e9f7bdd0205af4ed9
Autor:
Sang‐Jin Shin, Eun Hee Kim
Publikováno v:
IET Radar, Sonar & Navigation, Vol 17, Iss 1, Pp 117-127 (2023)
Abstract This study introduces a new scheme for resolving the ambiguity in a pulse‐Doppler radar. While ambiguity resolution is typically performed before tracking, the proposed approach, Track‐Before‐Resolving, is resolving ambiguity utilising
Externí odkaz:
https://doaj.org/article/413beb745c9145919c7dafe2c0d9a54b
Publikováno v:
Defence Technology, Vol 18, Iss 1, Pp 81-93 (2022)
This paper considers the time difference of arrival (TDOA) and frequency difference of arrival (FDOA) estimation problem for joint localization using unmanned aerial vehicles (UAVs), involving range migration (RM) and Doppler ambiguity within observa
Externí odkaz:
https://doaj.org/article/02813bfa27344d0db1be179368d896ff
Publikováno v:
Frontiers in Signal Processing, Vol 2 (2023)
Forward-looking imaging for maneuvering platforms has garnered significant interest in many military and civilian fields. As the maneuvering trajectory in the scanning period can be simplified as the constant acceleration maneuver, monopulse imaging
Externí odkaz:
https://doaj.org/article/7a1ecfe1c1f246d1b1205baa86980152
Akademický článek
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Autor:
Renli Zhang, Nan Xu
Publikováno v:
Remote Sensing, Vol 15, Iss 17, p 4227 (2023)
In order to enhance the detection and parameter estimation capacity to the maneuvering target with complex motions, a low complexity coherent integration and parameter estimation method named SOKT-IAR-LVD is proposed in this paper. In SOKT-IAR-LVD, f
Externí odkaz:
https://doaj.org/article/9a06cf3df5b3416abad54471e2b07b83
Publikováno v:
Remote Sensing, Vol 15, Iss 3, p 647 (2023)
Forward-looking multi-channel synthetic aperture radar (FLMC-SAR) can realize two-dimension image formation in monostatic mode. This system must face the problem of left–right Doppler ambiguity. In the traditional methods, the spatial degrees of fr
Externí odkaz:
https://doaj.org/article/d822cd170e46467f8a9425f3cca1eb5a