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Refocusing FMCW SAR moving target data in the wavenumber domain


Casalini, Emiliano; Frioud, Max; Small, David; Henke, Daniel (2019). Refocusing FMCW SAR moving target data in the wavenumber domain. IEEE Transactions on Geoscience and Remote Sensing, 57(6):3436-3449.

Abstract

Frequency-modulated continuous-wave (FMCW) synthetic aperture radar (SAR) is now a commonly adopted solution for producing high-resolution electromagnetic images of the earth surface. However, many SAR applications, such as detection or imaging of moving targets, have not yet been thoroughly researched for FMCW scenarios. This paper presents a refocusing technique that works in the wavenumber domain and is based on the reference spectrum of a point-like moving target. The method is illustrated using simulated experiments, and is further tested by processing real data collected by the Ka-band MIRANDA-35 sensor. The obtained results are validated and compared with independent ground measurements, thus demonstrating the accuracy of the presented method.

Abstract

Frequency-modulated continuous-wave (FMCW) synthetic aperture radar (SAR) is now a commonly adopted solution for producing high-resolution electromagnetic images of the earth surface. However, many SAR applications, such as detection or imaging of moving targets, have not yet been thoroughly researched for FMCW scenarios. This paper presents a refocusing technique that works in the wavenumber domain and is based on the reference spectrum of a point-like moving target. The method is illustrated using simulated experiments, and is further tested by processing real data collected by the Ka-band MIRANDA-35 sensor. The obtained results are validated and compared with independent ground measurements, thus demonstrating the accuracy of the presented method.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Uncontrolled Keywords:Electrical and Electronic Engineering, General Earth and Planetary Sciences
Language:English
Date:1 June 2019
Deposited On:25 Jun 2019 12:35
Last Modified:26 Jun 2019 07:33
Publisher:Institute of Electrical and Electronics Engineers
ISSN:1558-0644
OA Status:Closed
Publisher DOI:https://doi.org/10.1109/tgrs.2018.2884830

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