Work

Passive SAR Range Resolution Enhancement Using Multiple DVB-T Channels

Year: 2025

Type: article

Abstract: This paper presents an algorithm of improving the range resolution of passive synthetic aperture radar (SAR) images by combining multiple terrestrial digital video broadcasting (DVB-T) channels while also suppressing artefacts arising from the direct transmit-receive signal. The proposed algorithm has two parts: spectral estimation techniques for combining DVB-T channels and direct signal suppression (DSS) techniques based on modified CLEAN and sub-aperture imagery-based minimum pixel selection (SA-MIPS). Those capabilities can be achieved with a single-channel, wideband receiver and at shorter ranges and are thus consistent with drone-based operation. The performance of the techniques is demonstrated through both simulation and real-world experiments with a drone-based demonstrator.

Source: IEEE Transactions on Geoscience and Remote Sensing

DOI: 10.1109/tgrs.2025.3593815

Authors: Ali Bekar, Christopher Gilliam, Michail Antoniou

Institution: University of Birmingham

Language: English

Topic: Advanced SAR Imaging Techniques

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Defence Science and Technology Laboratory

OpenAlex ID: W4412747885

FWCI: 0.388

Cites: 37

Cited by: 1

Related to: 10