اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدFast and exact simulation of isotropic Gaussian random fields on $mathbb{S}^{2}$ and $mathbb{S}^{2}times mathbb{R}$
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نشر من قبل
Francisco Cuevas-Pacheco Mr.
تاريخ النشر
2018
مجال البحث
الاحصاء الرياضي
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English
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We provide a method for fast and exact simulation of Gaussian random fields on spheres having isotropic covariance functions. The method proposed is then extended to Gaussian random fields defined over spheres cross time and having covariance functions that depend on geodesic distance in space and on temporal separation. The crux of the method is in the use of block circulant matrices obtained working on regular grids defined over longitude $times$ latitude.
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