ANALYSIS OF SENTINEL-1 TOPSAR RAW DATA FOR SYNTHESIZING SINGLE LOOK COMPLEX IMAGE

Abstract

Researchers of SAR image applications use SNAP, SARscape, or Gamma software for processing SAR images. However, commercial software doesn't provide level-0 raw data processing and the cost of usage is expensive. In this paper, we propose the method for Sentinel-1 level-0 raw data processing. The method is composed of satellite data parsing, decoding, Sentinel-1 mode analyzing, and focusing algorithm. Our method can extract a swath number before focusing algorithm. Thus, there is advantageous in terms of processing time reduction using swath alignment. As a results of data analysis and program development, we synthesize single look complex image. Although the image should be enhanced the resolution, we expect that the proposed method is a valuable engineering guideline for researchers to process SAR images.