Bayesian Angular Superresolution Algorithm for Real-Aperture Imaging in Forward-Looking Radar
نویسندگان
چکیده
منابع مشابه
Bayesian Angular Superresolution Algorithm for Real-Aperture Imaging in Forward-Looking Radar
Abstract: In real aperture imaging, the limited azimuth angular resolution seriously restricts the applications of this imaging system. This report presents a maximum a posteriori (MAP) approach based on the Bayesian framework for high angular resolution of real aperture radar. First, Rayleigh statistic and the lq norm (for 0 < q ≤ 1) sparse constraint are considered to express the clutter prop...
متن کاملA Sparse Bayesian Approach for Forward-Looking Superresolution Radar Imaging
This paper presents a sparse superresolution approach for high cross-range resolution imaging of forward-looking scanning radar based on the Bayesian criterion. First, a novel forward-looking signal model is established as the product of the measurement matrix and the cross-range target distribution, which is more accurate than the conventional convolution model. Then, based on the Bayesian cri...
متن کاملSuperresolution Imaging for Forward-Looking Scanning Radar with Generalized Gaussian Constraint
A maximum a posteriori (MAP) approach, based on the Bayesian criterion, is proposed to overcome the low cross-range resolution problem in forward-looking imaging. We adapt scanning radar system to record received data and exploit deconvolution method to enhance the real-aperture resolution because the received echo is the convolution of target scattering coefficient and antenna pattern. The Gen...
متن کاملBayesian Deconvolution for Angular Super-Resolution in Forward-Looking Scanning Radar
Scanning radar is of notable importance for ground surveillance, terrain mapping and disaster rescue. However, the angular resolution of a scanning radar image is poor compared to the achievable range resolution. This paper presents a deconvolution algorithm for angular super-resolution in scanning radar based on Bayesian theory, which states that the angular super-resolution can be realized by...
متن کاملAn Iterative Shrinkage Deconvolution for Angular Super-Resolution Imaging in Forward-Looking Scanning Radar
The aim of angular super-resolution is to surpass the real-beam resolution. In this paper, a method for forward-looking scanning radar angular super-resolution imaging through a deconvolution method is proposed, which incorporates the prior information of the target’s scattering characteristics. We first mathematically formulate the angular super-resolution problem of forward-looking scanning r...
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: Information
سال: 2015
ISSN: 2078-2489
DOI: 10.3390/info6040650