# Indirect Microwave Holography with Resolution Enhancement in Metallic Imaging

## TL;DR

This paper presents a compact, low-cost indirect microwave holography system that uses directive antennas and neural network enhancement to improve image resolution for near-field metallic imaging applications.

## Contribution

It introduces a novel, miniaturized microwave holographic setup with neural network-based resolution enhancement, advancing the practicality of near-field microwave imaging.

## Key findings

- Successful development of a low-cost, compact holographic system
- Effective resolution enhancement using deep neural networks
- Potential for near-field metallic imaging applications

## Abstract

The development of compact indirect microwave holographic set-up by the implementation of low cost, specifically designed directive antennae as transmitter and receiver is proposed. Microwave holograms are recorded by 2D scanning over a plane using motorized translation stage. The recorded interference pattern i.e. holograms are then processed numerically to reconstruct the amplitude and phase information employing the angular spectrum diffraction method. The quality of the reconstructed amplitude image is further enhanced through the deep neural network, in order to combat with the low resolution of reconstructed images. The qualitative experimental results exploit the possibility of developing the miniaturized, and low cost indirect microwave holographic system for near field applications.