System Performance Analysis for Multi-Band SweepSAR Operating Mode

Abstract

In this paper, we analyze the main performance of satellite's Synthetic Aperture Radar system for high resolution and wide swath. We have used the radiation pattern of reflector antenna with array feed and comparison between the conventional ScanSAR mode and SweepSAR mode has been carried out. The SweepSAR mode is a high-resolution wide-swath mode that transmits beams over a wide range and receives echo signals through sequential beamforming based on SCORE(SCan On REceive). In this paper, we analyzed the operating principle and characteristics of satellite's SweepSAR mode and simulate system performances. In addition, in order to increase the utilization of image, performances analysis for multiple frequency bands(C-band, X-band) has been considered.

Optimal Design of the Reflector Antenna to Improve Performance of C-Band Quad-Pol ScanSAR Systems

“…In general, the ambiguity-to-signal ratio consists of the range ambiguity-to-signal ratio (RASR) and azimuth ambiguity-tosignal ratio (AASR). The resolution is characterized in the terms of the range direction and azimuth direction [4,5]. The performance indicators of the SAR system, such as ambiguity ratio and resolution, determine the quality of the images obtained from the SAR and are affected by the antenna radiation patterns.…”

“…In this paper, we assumed the C-band ScanSAR system used an offset reflector antenna at a satellite altitude of 505 km [4]. The performance of the quad-pol ScanSAR system was analyzed according to the size of the reflector antenna by applying the antenna patterns obtained by FEKO simulation tool.…”