Next Article in Journal
Using a Similarity Matrix Approach to Evaluate the Accuracy of Rescaled Maps
Next Article in Special Issue
2-D Coherent Integration Processing and Detecting of Aircrafts Using GNSS-Based Passive Radar
Previous Article in Journal
Improving SMOS Sea Surface Salinity in the Western Mediterranean Sea through Multivariate and Multifractal Analysis
Previous Article in Special Issue
Sparse Bayesian Learning Based Three-Dimensional Imaging Algorithm for Off-Grid Air Targets in MIMO Radar Array
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
Remote Sens. 2018, 10(3), 486;

On Signal Modeling of Moon-Based Synthetic Aperture Radar (SAR) Imaging of Earth

State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China
Author to whom correspondence should be addressed.
Received: 26 December 2017 / Revised: 14 March 2018 / Accepted: 19 March 2018 / Published: 20 March 2018
(This article belongs to the Special Issue Radar Imaging Theory, Techniques, and Applications)
Full-Text   |   PDF [7335 KB, uploaded 3 May 2018]   |  


The Moon-based Synthetic Aperture Radar (Moon-Based SAR), using the Moon as a platform, has a great potential to offer global-scale coverage of the earth’s surface with a high revisit cycle and is able to meet the scientific requirements for climate change study. However, operating in the lunar orbit, Moon-Based SAR imaging is confined within a complex geometry of the Moon-Based SAR, Moon, and Earth, where both rotation and revolution have effects. The extremely long exposure time of Moon-Based SAR presents a curved moving trajectory and the protracted time-delay in propagation makes the “stop-and-go” assumption no longer valid. Consequently, the conventional SAR imaging technique is no longer valid for Moon-Based SAR. This paper develops a Moon-Based SAR theory in which a signal model is derived. The Doppler parameters in the context of lunar revolution with the removal of ‘stop-and-go’ assumption are first estimated, and then characteristics of Moon-Based SAR imaging’s azimuthal resolution are analyzed. In addition, a signal model of Moon-Based SAR and its two-dimensional (2-D) spectrum are further derived. Numerical simulation using point targets validates the signal model and enables Doppler parameter estimation for image focusing. View Full-Text
Keywords: Moon-Based Synthetic Aperture Radar; Doppler parameters; signal model; image focusing Moon-Based Synthetic Aperture Radar; Doppler parameters; signal model; image focusing

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Xu, Z.; Chen, K.-S. On Signal Modeling of Moon-Based Synthetic Aperture Radar (SAR) Imaging of Earth. Remote Sens. 2018, 10, 486.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top