Title :
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
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;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343308
