Abstract
Abstract. Synthetic aperture radar (SAR) system based on frequency modulated continuous wave (FM-CW) transmission is a viable option for producing high-resolution ground-based imaging radars. Compared with pulsed SAR systems, the combination of FM-CW technology and SAR processing techniques have the advantages of small cubage, lightweight, cost-effectiveness, and high resolution in the SAR image. These characteristics make FM-CW SAR suitable to be deployed as payload on ground Based SARs (GB-SARs) for environmental and civilian applications. In this paper, the Range Migration Algorithm (RMA) is used in the processing chain of a Ground-Based SAR (GB-SAR) sensor. The mentioned sensor has been developed in Microwave Remote Sensing Laboratory (MReSL) at the School of Surveying and Geospatial Engineering, the University of Tehran for the generation of a complex image from the raw signal. The raw signal is acquired with that sensor working at S-band, frequency modulating from 2.26 GHz to 2.59 GHz.
Highlights
In recent years, there has been a growing interest in frequency modulated continuous wave (FM-CW) Synthetic aperture radar (SAR) technology for various military and civilian applications
Range Migration Algorithm (RMA) is used in the processing chain of a Ground-Based SARs (GB-SARs) sensor, which has been developed in the Microwave Remote Sensing Laboratory (MReSL) at the School of Surveying and Geospatial Engineering, University of Tehran, Tehran, Iran for the generation of a complex image from raw signal
We present the analytical process of the Frequency Modulation Continuous Wave (FMCW) SAR signals at S-band for generating a complex image
Summary
There has been a growing interest in frequency modulated continuous wave (FM-CW) SAR technology for various military and civilian applications. Compared with pulsed SAR, the combination of FM-CW technology and SAR processing techniques have the advantages of small cubage, lightweight, cost-effectiveness, and high resolution in the SAR image These characteristics make FM-CW SAR suitable to be deployed as payload on Ground-Based SARs (GB-SARs) for environmental and civilian applications. (Charvat et al, 2010) developed an ultrawideband (UWB) rail-SAR system with 2 GHz of bandwidth (1.926–4.069 GHz chirp in 10 ms) for through-wall detection purposes. Range Migration Algorithm (RMA) is used in the processing chain of a GB-SAR sensor, which has been developed in the Microwave Remote Sensing Laboratory (MReSL) at the School of Surveying and Geospatial Engineering, University of Tehran, Tehran, Iran for the generation of a complex image from raw signal.
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