Paper Title:
Motion Error Correction Scheme Using the Spatial Doppler Characteristics of the In-Scene Target in the SAR Imaging System
  Abstract

The success of target reconstruction in the SAR(Synthetic Aperture Radar) imaging system is greatly dependent on coherent detection. Incoherent detection appears as a multiplicative phase error to echoed signal, which consequently causes fatal degradations such as fading or dislocation of target image. In this paper, we propose a motion error correction scheme using an in-scene target to compensate for relative distance error between the radar and the target. We start by modeling from a wave equation for one point target, and then derive the complex motion error from extended overall echoed data. The proposed algorithm is also good for the correction of relatively large motion error because it can be applied repeatedly, and it is converged after each iteration. We use the spatial Doppler characteristics of the strong in-scene target to retrieve motion error, thus, we only used the partial spectral echo data corresponding to the strong in-scene target. By doing this, we can reduce computational loads and the number of iterations for the large motion error. We verify the performance of the proposed algorithm by applying it to the simulated spotlight-mode SAR data.

  Info
Periodical
Key Engineering Materials (Volumes 277-279)
Edited by
Kwang Hwa Chung, Yong Hyeon Shin, Sue-Nie Park, Hyun Sook Cho, Soon-Ae Yoo, Byung Joo Min, Hyo-Suk Lim and Kyung Hwa Yoo
Pages
247-253
DOI
10.4028/www.scientific.net/KEM.277-279.247
Citation
J. H. Choi, E. J. Kim, "Motion Error Correction Scheme Using the Spatial Doppler Characteristics of the In-Scene Target in the SAR Imaging System ", Key Engineering Materials, Vols. 277-279, pp. 247-253, 2005
Online since
January 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sunghee Kwak, Youngran Lee, Dong Seok Shin, Won Kyu Park
Abstract:Synthetic aperture radar (SAR) provides information different from those gathered by optical sensors and it acquires data day or night...
799
Authors: Nian Long Song, Da Zhang, Qi Li
Chapter 24: Laser Based Manufacturing
Abstract:In order to improve the accuracy of signal processing in Laser Doppler Velocimetry, a method based on the association of spectral refinement...
6319
Authors: Zhi Wei Qiu, Yan Li
Chapter 8: Nanomaterials and Nanomanufacturing
Abstract:In the introduction to this dissertation, one flowing algorithm is proposed in this paper considering the SAR Interferometry. The basic idea...
1636
Authors: Shao Bin Li, Zheng Chen, Zhi Ya Hao, Jian Jun Gao
Chapter 4: Data, Image and Signal Processing
Abstract:The influence of frequency synchronization error on SAR imaging and moving target detection using Along-Track Interferometry (ATI) is...
702
Authors: Lin Li, Ye Shu Yuan
Chapter 4: Data, Image and Signal Processing
Abstract:As an essential branch of over the horizon radar (OTHR), ship borne OTHR contains several important issues, the most significant one of which...
746