arXiv 0810.09432008-10-06astro-ph

SKA阵列构形研究--基于SDR的优值实现

Array configuration studies for the SKA -- Implementation of figures of merit based on SDR

Dharam V. Lal, Andrei P. Lobanov

备注：: To appear in the proceedings of "From Planets to Dark Energy: the Modern Radio Universe", eds. R. Beswick et al., published by PoS

摘要：

平方公里阵列将在几个新的大型光学、X射线和伽马射线望远镜投入使用时投入使用。建造SKA的主要动力是灵敏度的显著提高，这将扩大厘米波长无线电科学的总体范围。为此，应进行彻底的设计研究，以确保SKA成为其他波段设施的竞争对手。为了量化SKA配置的成像性能，我们正在实施基于空间动态范围（SDR）的品质因数。这项工作的重点是对SKA备忘录38（A）中得出的基于SDR的分析品质因数进行广泛的数值测试。Lobanov）。在这里，我们介绍了我们的初步结果。

英文摘要：

The Square Kilometre Array is going to become operational at the time when several new large optical, X-ray and Gamma-ray telescopes are expected to be working. The main drive for building the SKA is a significant improvement of sensitivity that would widen the general scope of the centimetre-wavelength radio science. To this end, a thorough design studies should be made, in order to ensure that the SKA becomes a competitive counterpart of the facilities at other wavebands. To quantify imaging performance of the SKA configurations, we are implementing figures of merit based on spatial dynamic range (SDR). This work is focused on extensive numerical tests of the analytical, SDR--based figures of merit derived in the SKA Memo 38 (A. Lobanov). Here, we present our preliminary results.

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