414560

An efficient approach to mitigate the effect of antenna steering in SAR images by using platform navigation data

Article

Last updated: 11 May 2025

Subjects

-

Tags

Aerospace

Abstract

This research paper proposes a novel technique to overcome common challenges in synthetic aperture radar (SAR) imaging, such as the effects of shadows, layover, and multipath interference. The key innovation of the proposed approach lies in two main contributions.  First, the strategic use of navigation data to compensate for antenna
steering, which introduces irregularities in the missing data regions of SAR images. The technique can effectively mitigate the impact of the aforementioned SAR imaging artifacts. Second, the proposed scheme results indicate due to the integration of digital signal processing (DSP) methods played a crucial role in enabling efficient and effective
remedy steps within the image formation algorithm preprocessing. This combined approach is based on platform navigation data powered by DSP when followed by a chirp-scaling algorithm (CSA), one of the most powerful SAR image formation algorithms. This approach when applied to real-world data from the Sentinel-1 satellite has yielded impressive
and unprecedented results in compensating the antenna steering and mitigating the backfill, producing reconstructed images that closely resemble the original Sentinel-1 SAR products. To comprehensively validate the performance of the proposed technique, the reconstructed images were assessed against the reference Sentinel-1 data using a suite
of established objective metrics, including entropy, contrast, sharpness, Mean Opinion Score (MOS), and structural similarity index measure (SSIM).These quantitative analyses conclusively confirmed the efficacy of the new method in enhancing the overall fidelity and visual quality of SAR imagery.This is very clear as the degree of similarity was recorded
on average as (98.4%) and obtained score on the standard scale of MOS is (4.82 out of 5).

DOI

10.21608/ejmtc.2024.321077.1287

Keywords

Synthetic aperture radar (SAR), SAR image formation chirp scaling algorithm (CSA), Sentinel-1 level-0, Blackfill, Entropy

Authors

First Name

Ahmed

Last Name

ELBohy

MiddleName

Salah

Affiliation

Avionics Department, Military Technical College

Email

a.bohy4phd@gmail.com

City

Cairo

Orcid

0000-0003-4199-9896

First Name

Ashraf

Last Name

Helmy

MiddleName

Khaled

Affiliation

National Authority for Remote Sensing & Space Sciences

Email

akhelmy@narss.sci.eg

City

Cairo

Orcid

-

First Name

Ahmed

Last Name

Mashaly

MiddleName

S

Affiliation

Avionics Department, Military Technical College

Email

mashaly@mtc.edu.eg

City

Cairo, Nasr City

Orcid

-

First Name

Ahmed

Last Name

Azouz

MiddleName

A

Affiliation

Avionics Department, Military Technical College

Email

a.azouz@mtc.edu.eg

City

Cairo Nasr City

Orcid

-

Volume

9

Article Issue

1

Related Issue

55604

Issue Date

2025-03-01

Receive Date

2024-09-15

Publish Date

2025-03-01

Page Start

59

Page End

77

Print ISSN

2357-0954

Online ISSN

2357-0946

Link

https://ejmtc.journals.ekb.eg/article_414560.html

Detail API

http://journals.ekb.eg?_action=service&article_code=414560

Order

414,560

Type

Original Article

Type Code

307

Publication Type

Journal

Publication Title

Journal of Engineering Science and Military Technologies

Publication Link

https://ejmtc.journals.ekb.eg/

MainTitle

An efficient approach to mitigate the effect of antenna steering in SAR images by using platform navigation data

Details

Type

Article

Created At

11 May 2025