ESPRIT-based frequency estimation of multiple sinusoids with double-channel sub-Nyquist sampling
Shan Guo Huang, Hong Sun, Haijian Zhang, Lei Yu · arXiv (Cornell University) · 2015
In some applications of frequency estimation, it is challenging to sample at as high as Nyquist rate due to hardware limitations. Based on conventional ESPRIT, a new method for frequency estimation with double-channel sub-Nyquist sampling is proposed. When the two undersampled multiples are relatively prime integers, partial samples are selected to estimate the frequency components contained in the signals via ESPRIT. The simulations show that the proposed method holds almost the same accuracy with regular sampling.