大射电望远镜一平方公里阵(SKA)贵州选址的一种构形

A CONFIGURATION OF SKA SITING IN GUIZHOU, CHINA

大射电望远镜一平方公里阵(SKA)贵州选址分两种构形:小N大D型和大N小D型。采用遗传算法对第一种构形布局,得小N大D型构形共有60个台址组成,分别分布在核心区(R<0.75 km)和发自核心区边缘的5 条对数螺旋线上,其中核心区(R<0.75 km)台址10个,中央区(0.75 km<R<2.5 km)台址15个,外围区(2.5 km <R<150 km)台址25个,遥远区(150 km<R<3 000 km)台址10个。

There are two types of Square Kilometer Array configuration on the large radio telescope sites in Guizhou, China. One is composed of a few telescope sites larger in diameter; the other is composed of many telescope sites smaller in diameter. Optioned by the inherit algorithm, the first configuration is made up of 60 sites, of which 10 sites are distributed in the kernel region （R〈0.75 km） and the other is along 5 log spiral curves spreading symmetrically from the kernel board as pigtail. These curves pass over the center region （0.75 km〈R〈2.5 km） with 15 sites, through the off-lying region （2.5 km〈R〈lS0 km） with 25 sites, and touch the far-off region （150 km〈R〈3000 km） with 10 sites.