Adaptive Sparse Domain Selection for Weather Radar Superresolution

Algorithm 1

Adaptive sparse domain selection (ASDS) algorithm.

	Require:
	Set the initial estimation by using wavelet domain and the iterative threshold algorithm [25].
	Preset and the maximal iteration number, denoted by and set k = 0
	Ensure: Iterate on k until or
(1)	Select subdictionary and AR model for each through equation (9) and calculate the nonlocal weight for each
(2)	Calculate and with the selected AR models and the non-local weights
(3)	Compute through equation (19), which can be calculated by using iterative threshold algorithm. Then, we can get
(4)	Calculate by averaging all the reconstructed echo patches, which can be completed by equation (4)
(5)	If update the adaptive sparse domain of and the matrices and using .