Turbulence effects on high resolution airborne SAR performance

Author

Jinping, Sun ; Yuekai, Bi ; Xiao, Han ; Yanping, Wang

Author_Institution

Sch. of Electron. & Inf. Eng., Beihang Univ., Beijing, China

fYear

2011

fDate

9-11 Sept. 2011

Firstpage

1190

Lastpage

1193

Abstract

The imaging performance of high resolution airborne SAR system can be affected by the phase errors resulted from random refractivity fluctuations, when there is a turbulent region in the troposphere. We analyze how the tropospheric refractivity fluctuations affect the high resolution airborne SAR performance. A detailed simulation method is presented to estimate the phase errors caused by atmospheric turbulence. Using the Von Karman model to estimate the refractivity fluctuations in a turbulent region, the structure constant model of atmospheric turbulence and the raw data collected by a Ku-band airborne spotlight-mode SAR with 0.1m resolution, we simulate the actual results of effects of atmospheric turbulence on the SAR image focusing.

Keywords

airborne radar; atmospheric turbulence; radar imaging; synthetic aperture radar; Ku-band airborne spotlight-mode SAR; SAR image focusing; Von Karman model; atmospheric turbulence; high resolution airborne SAR performance; imaging performance; structure constant model; turbulence effects; Atmospheric modeling; Fluctuations; Image resolution; Imaging; Radar imaging; Refractive index; SAR; atmospheric turbulence; high resolution; imaging performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Communications and Control (ICECC), 2011 International Conference on

Conference_Location

Zhejiang

Print_ISBN

978-1-4577-0320-1

Type

conf

DOI

10.1109/ICECC.2011.6066754

Filename

6066754