A Study of the Correlation between SAR Echoes Scattered by Fluctuant Rough Ground

Author

Nan, Liu ; Linrang, Zhang ; Bin, Liu

Author_Institution

Nat. Key Lab. for Radar Signal Process., Xidian Univ., Xi´´an

fYear

2006

fDate

16-19 Oct. 2006

Firstpage

1

Lastpage

4

Abstract

This paper deals with the influence of ground fluctuation and roughness on the correlation between distributed satellites SAR echoes. The model for a rough surface is presented based on the facet theory followed by its statistical scattering property. Then a formula to calculate the correlation between echoes scattered by rough surface is proposed. The influence is shown by several simulation results, where the terrain fluctuation is imitated by a 2-dimension correlative random process. The simulation results indicate that the ground fluctuation and roughness deteriorate the correlation if the two satellites are cross-track separated, and have a little influence on the correlation if the two satellites are along-track separated

Keywords

correlation methods; echo; electromagnetic wave scattering; radar tracking; random processes; spaceborne radar; statistical analysis; synthetic aperture radar; 2-dimension correlative random process; SAR echo; cross-tracking; distributed satellites; facet theory; fluctuant rough ground; statistical scattering property; synthetic aperture radar; Fluctuations; Pixel; Radar scattering; Random processes; Rough surfaces; Satellites; Surface roughness; Surface topography; Synthetic aperture radar; Synthetic aperture radar interferometry; SAR; distributed satellites; echoes correlation; rough surface; terrain fluctuation;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2006. CIE '06. International Conference on

Conference_Location

Shanghai

Print_ISBN

0-7803-9582-4

Electronic_ISBN

0-7803-9583-2

Type

conf

DOI

10.1109/ICR.2006.343308

Filename

4148414