论文标题
基于艾尔玛角度的观察计划，质量评估和光束成型的新方法
New methods for ALMA angular-scale based observation scheduling, quality assessment, and beam shaping
论文作者
论文摘要
到目前为止，根据代表光谱范围内的合成束和噪声RMS的给定形状和大小的实现，确定了ALMA干涉测量值的完成。关于角度分辨率的这种方法主要研究了干涉仪中最长的基线，几乎没有说明在较大的角度尺度下的灵敏度。我们正在探索基于角度尺度的调度和质量评估的想法，以及基于角度尺度的可见性加权，这是优化观察效率和图像保真度的一步。这种方法将成像质量保证带入了干涉仪记录数据的可见性空间，因此简化了过程的许多方面。同样，在安排预期成像属性的详细评估时，有助于优化调度过程。该方法适用于所有不止CA的无线电干涉仪。 10天天线。
Up to now, the completion of an ALMA interferometric observation is determined based on the achievement of a given shape and size of the synthesized beam and the noise RMS in the representative spectral range. This approach with respect to the angular resolution investigates mainly the longest baselines of the interferometer and says little about the sensitivity at larger angular scales. We are exploring the ideas of angular-scale-based scheduling and quality assessment, and of angular-scale-based visibility weighting as a step towards optimising both observation efficiency and image fidelity. This approach carries the imaging quality assurance into the visibility space where interferometers record the data, and therefore simplifies many aspects of the procedure. Similarly, during scheduling such detailed assessment of the expected imaging properties helps optimising the scheduling process. The methodology is applicable to all radio interferometers with more than ca. 10 antennas.
