Kernel phase and kernel amplitude in Fizeau imaging
Kernel phase and kernel amplitude in Fizeau imaging
复制标题
斐索成像中的核相位和核振幅
DOI：
10.1093/mnras/stw2215
复制
发表时间：
2016
影响因子：
4.8
通讯作者：
B. Pope
中科院分区：
文献类型：
--
作者：
B. Pope
核相位干涉测量是一种高角分辨率成像方法，可增强自适应光学器件的散斑成像性能。核相位是自校准可观测量，通过考虑衍射问题的基于矩阵的近似，将闭合相位的思想从非冗余阵列推广到具有任意形状光瞳的望远镜。在本文中，我讨论了核相位的最新历史，特别是在稀疏阵列的基于矩阵的研究中，并提出了闭包幅度到核幅度的类似推广。这种新方法可以自校准光学成像中的吞吐量和闪烁误差，从而将类核相位方法的能力扩展到对称目标，在对称目标中，幅度校准而不是相位校准可能是一个重大限制，并将促进高角分辨率天文学的进一步发展。
Kernel phase interferometry is an approach to high angular resolution imaging which enhances the performance of speckle imaging with adaptive optics. Kernel phases are self-calibrating observables that generalize the idea of closure phases from non-redundant arrays to telescopes with arbitrarily shaped pupils, by considering a matrix-based approximation to the diffraction problem. In this paper I discuss the recent history of kernel phase, in particular in the matrix-based study of sparse arrays, and propose an analogous generalization of the closure amplitude to kernel amplitudes. This new approach can self-calibrate throughput and scintillation errors in optical imaging, which extends the power of kernel phase-like methods to symmetric targets where amplitude and not phase calibration can be a significant limitation, and will enable further developments in high angular resolution astronomy.