Zobrazeno 1 - 10
of 196
pro vyhledávání: '"Guang-Cai Sun"'
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 2327-2338 (2023)
High-resolution airborne synthetic aperture radar imaging requires long synthetic aperture time (LSAT). However, the LSAT invalidates the Fresnel approximation in the traditional autofocusing method, leaving a residual signal phase in the motion erro
Externí odkaz:
https://doaj.org/article/8425e70985974a36b3f427074ec2a894
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 15, Pp 7873-7885 (2022)
Azimuth multichannel synthetic aperture radar (SAR) is a useful approach to solving minimum antenna area constraint and realizing high resolution and wide swath (HRWS) imaging by multichannel signal reconstruction. However, channel phase error will s
Externí odkaz:
https://doaj.org/article/407f5e3aa95141a5b592d6074975cc21
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 15, Pp 1992-2003 (2022)
With the increasing of application requirements, the high-resolution real-time imaging processing of the spaceborne spotlight synthetic aperture radar (SAR) has been developed. Since the traditional real-time imaging algorithms have the problems that
Externí odkaz:
https://doaj.org/article/0c3718f3a365455aac8bac70d01b773f
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 8259-8272 (2021)
Multichannel synthetic aperture radar ground moving target indication has been widely used and get great attention nowadays. Traditional adaptive methods like space-time adaptive processing (STAP) need to calculate and search the maximum of the test
Externí odkaz:
https://doaj.org/article/159eb6fb55a84c43aab84c593a2c5245
A Multi-Pulse Cross Ambiguity Function for the Wideband TDOA and FDOA to Locate an Emitter Passively
Publikováno v:
Remote Sensing, Vol 14, Iss 15, p 3545 (2022)
The time difference of arrival (TDOA) and frequency difference of arrival (FDOA) between two receivers are widely used to locate an emitter. Algorithms based on cross ambiguity functions can simultaneously estimate the TDOA and FDOA accurately. Howev
Externí odkaz:
https://doaj.org/article/6efa6a18988a4a0e853594a22a99d800
Publikováno v:
Electronics Letters, Vol 55, Iss 8, Pp 481-483 (2019)
The focusing of squint beam‐steering synthetic aperture radar (SAR) data is a challenging task for the technical difficulty of space‐variant range cell migration correction (RCMC). It is more complicated when considering the manoeuver of high‐s
Externí odkaz:
https://doaj.org/article/e9b900c8e01d476e85e638a80f6cf354
Publikováno v:
Remote Sensing, Vol 13, Iss 17, p 3389 (2021)
In a short observation time, after the range alignment and phase adjustment, the motion of a target can be approximated as a uniform rotation. The radar observing process can be simply described as multiplying an observation matrix on the ISAR image,
Externí odkaz:
https://doaj.org/article/07441ad035a24950940e8b48b17e6eac
Publikováno v:
Remote Sensing, Vol 12, Iss 17, p 2699 (2020)
This paper studies inverse synthetic aperture radar (ISAR) image matching and three-dimensional (3D) scattering imaging based on extracted dominant scatterers. In the condition of a long baseline between two radars, it is easy for obvious rotation, s
Externí odkaz:
https://doaj.org/article/e498437eef714809be9d418a0751ee62
Publikováno v:
Remote Sensing, Vol 11, Iss 11, p 1277 (2019)
Due to the limited information of two-dimensional (2D) radar images, the study of three-dimensional (3D) radar image reconstruction has received significant attention. However, the target attitude obtained by the existing 3D reconstruction methods is
Externí odkaz:
https://doaj.org/article/7e54bb3bb1bd488aac2dac7e247b3efe
Publikováno v:
Sensors, Vol 18, Iss 8, p 2562 (2018)
Conventional synthetic aperture radar (SAR) imaging algorithms usually require a period of time to process data that is longer than the time it takes to record one synthetic aperture or that corresponding to an adequate azimuth resolution. That is to
Externí odkaz:
https://doaj.org/article/0f7a2a65959442e4a9d5d0183b27cc02