Spectral estimation on the sphere with needlets: high frequency asymptotics

High-Order Harmonic Spectral Filter with

High-Order Harmonic Spectral Filter with the Double Fourier Series on a Sphere

✍ Hyeong-Bin Cheong; In-Hyuk Kwon; Tae-Young Goo; Myeong-Joo Lee 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 561 KB

A high-order harmonic spectral filter (HSF) is implemented to smooth out a field variable defined on a spherical surface using the double Fourier series (DFS) as orthogonal basis functions. The filter consists of the solution of the high-order harmonic diffusion equation with the implicit method, wh