Phase autofocus algorithmPGA algorithmThe phase gradient autofocus algorithm (PGA) is widely used in radar imaging due to its ability to achieve high accuracy estimation of phase error. However, in inverse synthetic aperture radar (ISAR) imaging, the target usually occupies continuous range bins and...
PGAPage, AZ, USA(Airport Code) PGAPotato Growers of Alberta PGAProstaglandin Analog(aka Prostaglandin Analogue; molecule) PGAPlanetary Gemologists Association PGAPhase Gradient Autofocus(algorithm) PGAPower Generating Assembly PGAPersonnel Group of America, Inc.(stock symbol) ...
1.Performance analysis and improvement ofphase gradient autofocusalgorithm;相位梯度自聚焦算法的性能分析及改进 2.And then,the stripphase gradient autofocus(PGA) algorithm is ameliorated.首先建立了适合机载UWB SAR成像几何的相位误差模型,并分析了其特点;然后针对模型特点,对条带式相位梯度自聚焦算法作出改进,同...
The phase gradient autofocus (PGA) technique for phase error correction of spotlight mode synthetic aperture radar (SAR) imagery is examined carefully in the context of four fundamental signal processing steps that constitute the algorithm. We demonstrate that excellent results over a wide variety of ...
And then,the strip phase gradient autofocus(PGA) algorithm is ameliorated. 首先建立了适合机载UWB SAR成像几何的相位误差模型,并分析了其特点;然后针对模型特点,对条带式相位梯度自聚焦算法作出改进,同时提出一种基于空不变因子估计的加权相位梯度自聚焦算法。 3. A new phase gradient autofocus(PGA) algorithm...
3) phase gradient algorithm 相位梯度算法 1. If the scatter selected inphase gradient algorithm(PGA) algorithm is not isolated,the accuracy of the phase error estimation will be degraded. 当相位梯度算法挑选的散射点不是孤立散射点时,导致相位误差估计的准确性下降。
A new autofocus method of the space-time-varied phase error (PE) correction is presented for inverse synthetic aperture ladar (ISAL). The PE is corrected by a two-dimension matrix that is estimated in the form of phase gradient both in frequency and time domains. The autofocus method we ...
For a light field, the wavefront determines the axial variation of the intensity in the direction of propagation. Specifically, there is a quantitative relationship between the gradient and curvature of the phase and the axial differentiation of intensity, the so-called transport of intensity equation...
After desalting, the peak fractions were loaded onto a HiTrap Q column (GE Healthcare) and washed sequentially with lysis buffer at different salt concentrations (50 mM KCl; 87.5 mM KCl; 200 mM KCl), before final fractions were eluted in lysis buffer using a salt gradient from 200...
http://www.pudn.com/download/item/id/2334284.html 哪位兄台可以帮帮忙在联合开发网上下载一下这个...