An Improved Model of HF-SAR for Estimating Surface Current Velocity
With the requirement of surface current extraction by single station of high frequency surface wave radar, High Frequency SAR (HF-SAR) is proposed and proved to be theoretically feasible. However the old model HF-SAR is not perfect enough and there are several drawbacks such as Bragg scattering not included, high computation burden and implementation difficulty. Thus in this paper we present an improved model of HF-SAR to overcome the previous drawbacks. For the improved model, Bragg frequency is introduced into the echo signal and an iterative approach to estimate parameters of chirp signals is adopted for velocity estimation algorithms. Also an implementation scheme of HF-SAR on the sea is proposed. Simulation results with the improved model show that the precision of surface current velocity estimation is high enough to meet practical requirements.
HF Surface Wave SAR velocity estimation surface current
Huibin Peng Wenhu Xue Sanwen Zhu Guishui Yu
Military Deputy Bureau of Shanghai Region,Naval Equip.Dept.,Shanghai,200083,China Electronics Engineering College,Naval Univ.of Eng.,Wuhan 430033,China
国际会议
首届亚太合成孔径雷达会议(1st Asian and Pacific Conference on Synthetic Aperture Radar Proceedings)
安徽黄山
英文
2007-11-05（万方平台首次上网日期，不代表论文的发表时间）