Next Article in Journal
Cooperative Data Collection Mechanism Using Multiple Mobile Sinks in Wireless Sensor Networks
Next Article in Special Issue
Soil Moisture Retrieval from the Chinese GF-3 Satellite and Optical Data over Agricultural Fields
Previous Article in Journal
Potential Point-of-Care Microfluidic Devices to Diagnose Iron Deficiency Anemia
Previous Article in Special Issue
Design and Implementation of a Novel Polarimetric Active Radar Calibrator for Gaofen-3 SAR
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Sensors 2018, 18(8), 2626; https://doi.org/10.3390/s18082626

An Accurate Measurement Method for Azimuth Pointing of Spaceborne Synthetic Aperture Radar Antenna Beams Based on Ground Receiver

1
Key Laboratory of Technology in Geo-Spatial Information Processing and Application Systems, Chinese Academy of Sciences, Beijing 100190, China
2
Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
3
School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing 100190, China
4
Beijing institute of Remote Sensing Information, Beijing 100192, China
5
National Key Laboratory of Microwave Imaging Technology, Beijing 100190, China
6
Beijing Institute of Space System Engineering, China Academy of Space Technology, Beijing 100086, China
7
China Centre for Resource Satellite Data and Application, Beijing 100094, China
*
Author to whom correspondence should be addressed.
Received: 29 June 2018 / Revised: 27 July 2018 / Accepted: 8 August 2018 / Published: 10 August 2018
(This article belongs to the Special Issue First Experiences with Chinese Gaofen-3 SAR Sensor)
Full-Text   |   PDF [4030 KB, uploaded 10 August 2018]   |  

Abstract

The paper proposes a new method for measuring the azimuth pointing of spaceborne synthetic aperture radar (SAR) antenna beams based on the ground receiver, which can receive and record complex sampling data of the pulse signals transmitted from the spaceborne SAR. The center of the antenna pattern is extracted from the complex sampling data amplitude envelope to obtain the time when the beam main lobe center irradiates the ground receiver, and the range migration information is extracted from the complex sampling data to obtain the time when the satellite is over the top of the ground receiver. The results of Chinese civilian remote sensing GaoFen-3 SAR satellite experiment data processing show that the measurement accuracy of this method is better than 0.002°, which can be applied to the accurate measurement of azimuth pointing of various low Earth orbit (LEO) SAR antenna beams. View Full-Text
Keywords: Gaofen-3; SAR; calibration; antenna beam pointing; Image radiation correction Gaofen-3; SAR; calibration; antenna beam pointing; Image radiation correction
Figures

Figure 1

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).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Liang, W.; Jia, Z.; Kang, L.; Hong, J.; Lei, B.; Zhang, Q.; Chen, Q. An Accurate Measurement Method for Azimuth Pointing of Spaceborne Synthetic Aperture Radar Antenna Beams Based on Ground Receiver. Sensors 2018, 18, 2626.

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

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top