Publications by authors named "Hwee Siang Tan"
Sparse array 3-D ISAR imaging based on maximum likelihood estimation and CLEAN technique.
IEEE Trans Image Process
August 2010
Article Synopsis
- Large 2-D sparse arrays produce high-resolution microwave images, but the presence of high sidelobes creates artifacts that reduce dynamic range.
- The paper proposes using the CLEAN technique for removing these artifacts, although it acknowledges that the traditional DFT method for estimating signal amplitudes is not very effective.
- Instead, it combines DFT for initial estimates with a maximum likelihood estimation method to improve accuracy and uses time domain information to lessen sidelobe effects, demonstrating improved results in numerical simulations.