High‐precision motion compensation for very‐high‐resolution SAR imaging
نویسندگان
چکیده
منابع مشابه
Improved SAR Motion Compensation without Interpolation
Motion compensation is an important part of SAR processing for high resolution airborne sensors, such as those flown on UAS’s. The non-ideal motion of the platform results in degraded image quality, but for known motion, corrections can be made. Traditional motion compensation requires a computationally costly interpolation step to correct translational motion greater than a single range bin. T...
متن کاملMotion Compensation for Squint Mode Spot- Light Sar Imaging Using Efficient 2d Inter- Polation
In the squint mode airborne spotlight synthetic aperture radar system using the range migration algorithm (RMA), autofocus (AF) technique yields poor results due to the squint spreading of the point spread function (PSF) of a scatterer. Thus, two-dimensional (2D) interpolation is required to direct PSF blurring in cross-range direction, to improve the cross-range resolution ∆y and to remove the...
متن کاملAn Imaging Compensation Algorithm for Spaceborne High-Resolution SAR Based on a Continuous Tangent Motion Model
Abstract: This paper develops a continuous tangent motion model by approximating the relative trajectories between spaceborne Synthetic Aperture Radar (SAR) and its targets during every transmitting period and every receiving period as tangential segments. Compared with existing motion models, including the stop-go model and the continuous rectilinear model, the continuous tangent model is much...
متن کاملImproved Topography- and Aperture- Dependent Motion Compensation for Airborne Sar
Synthetic Aperture Radar (SAR) is a microwave remote sensing sensor mounted on aircrafts or satellites, which allows obtaining high-resolution images of the observed scene [1]. In this paper we focus our attention on airborne SAR, whose raw data, in contrast to the spaceborne case, are affected by motion errors. More specifically, in airborne systems, the presence of atmospheric turbulence affe...
متن کاملMotion Compensation Based on Signal Processing Method for Airborne SAR
In the synthetic aperture radar (SAR) system, the motion error is the main phase error sources and the motion compensation is very important. The phase gradient autofocus (PGA) is a state of art technique for phase error correction of SAR. It exploits the redundancy of the phase-error information among range bins by selecting the strongest scatter for each range bin and synthesizes them. The mo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Engineering
سال: 2019
ISSN: 2051-3305,2051-3305
DOI: 10.1049/joe.2019.0321