Imaging algorithm for multi-channel scan synthetic aperture radar with channel error estimation and compensation

Abstract

The wide swath synthetic aperture radar (SAR) imaging with a fine resolution is fundamentally a contradiction in conventional SAR imaging. To meet the demand of high-resolution width swath (HRWS) imaging, multi-channel scan mode has received a great deal of attention as a promising concept to realise HRWS observation. In this article, based on extended Chirp Scaling algorithm, an imaging algorithm for multi-channel scan SAR is proposed. Furthermore, channel error estimation and compensation are the key point in multi-channel scan imaging and are integrated into the proposed imaging algorithm. The computer simulation is shown to verify the presented imaging algorithm.

Keywords

• synthetic aperture radar
• radar imaging
• geophysical image processing
• image resolution
• hrws observation
• imaging algorithm
• wide swath synthetic aperture radar
• multichannel scan synthetic aperture radar
• multichannel scan imaging
• channel error estimation
• multichannel scan sar
• extended chirp scaling algorithm
• multichannel scan mode
• high-resolution width swath imaging
• conventional sar imaging
• fine resolution