Zobrazeno 1 - 10
of 751
pro vyhledávání: '"range migration"'
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 13276-13291 (2024)
Compact high-frequency (HF) surface wave radar can be used for remote sensing of sea surface dynamic parameters, such as winds, waves, and currents, as well as hard targets, such as ships and low-altitude aircrafts. Due to its small antenna aperture,
Externí odkaz:
https://doaj.org/article/5962110c9cea436d8f773b019e9aefa1
Publikováno v:
Leida xuebao, Vol 12, Iss 5, Pp 971-985 (2023)
Single snapshot forward-looking imaging technology with high performance and resolution is crucial for enabling the development of automotive radars. However, range migration issues can limit the implementation of coherent integration methods, and im
Externí odkaz:
https://doaj.org/article/16406cdf017f4cf4940b6e8a06480f41
Publikováno v:
Remote Sensing, Vol 16, Iss 12, p 2129 (2024)
The Doppler band compensated by the keystone transform (KT) is limited. Therefore, it needs to be used in conjunction with the Doppler ambiguity compensation function to correct the range migration (RM) caused by maneuvering targets with Doppler ambi
Externí odkaz:
https://doaj.org/article/066fca93a9c9445db99212b6b7f63437
Publikováno v:
Radioengineering, Vol 32, Iss 1, Pp 33-43 (2023)
The detection performance of weak target on sea is affected by the special effects of sea clutter amplitude. Aiming at the time and space correlated of sea clutter, the correlated K-distribution sea clutter model is established by the sphere invarian
Externí odkaz:
https://doaj.org/article/42836f5562804cc99578f4026abcd5cf
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 10, p 1798 (2024)
This paper addresses the problem of weak maneuvering target detection in the space-based bistatic radar system through long-time coherent integration (LTCI). The space-based bistatic radar is vulnerable to the high-order range migration (RM) and Dopp
Externí odkaz:
https://doaj.org/article/039af25be2b74394921f4b8f1c841fee
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 2221-2236 (2023)
In the area of synthetic aperture radar (SAR), the ultrahigh resolution is always a continuous pursuit for researchers. To realize ultrahigh resolution, microwave photonics technology is an excellent solution since it has advantages of low transmissi
Externí odkaz:
https://doaj.org/article/74f998d7908b4b0c914152818b4b79a0
Publikováno v:
IET Radar, Sonar & Navigation, Vol 16, Iss 12, Pp 1977-1996 (2022)
Abstract Coherent integration of complex manoeuvering targets at high speed and acceleration causes range and Doppler frequency migration and lead to large computational burdens and parameter estimation error. To solve this, the geometric‐auxiliary
Externí odkaz:
https://doaj.org/article/a07ca341386d49caa8125904bcbd57ae
Publikováno v:
IET Radar, Sonar & Navigation, Vol 16, Iss 6, Pp 1026-1041 (2022)
Abstract Digital‐to‐analogue and analogue‐to‐digital in a digital array radar limits the transmission and reception of instantaneous broadband signals (IBSs), which makes it a technical bottleneck for digital array radar to obtain an instanta
Externí odkaz:
https://doaj.org/article/ec72125adce34f15a79bdd20d99dd5b4
Publikováno v:
Remote Sensing, Vol 15, Iss 18, p 4371 (2023)
In recent years, terahertz (THz) radar has been widely researched for its high-resolution imaging. However, the traditional inverse synthetic aperture radar (ISAR) imaging algorithms in the microwave band perform unsatisfactorily in the THz band. Fir
Externí odkaz:
https://doaj.org/article/4bee9d05a902445e91fb0793962db46b