Localization Method for Implant Devices Using Electromagnetic Scattering Based on Sparse Reconstruction

Herein, we propose a localization method for implant devices using electromagnetic scattering based on sparse reconstruction. We define the product of the total electric field and the complex relative permittivity as a new unknown variable, which is expected to be sparse. Computer simulations are conducted to validate the sparsity of the estimated variable, and localization errors are evaluated to confirm the performance improvement using the sparsity-based localization method. The result confirmed the excellent localization performance, particularly below 17 MHz, even under low signal-to-noise power ratios.