Title :
Two-dimensional spectrum for MEO SAR processing using a modified advanced hyperbolic range equation
Author :
Bao, Mingquan ; Xing, M.D. ; Wang, Yannan ; Li, Y.C.
Author_Institution :
Nat. Lab. of Radar Signal Process., Xidian Univ., Xi´an, China
Abstract :
To improve further the accuracy in the approximation of the range history for a synthetic aperture radar (SAR) onboard a medium-earth-orbit (MEO) satellite a fourth power term has been added to the advanced hyperbolic range equation (AHRE), and the new one is called a modified AHRE (MAHRE). Then, a two-dimensional spectrum using the MAHRE was derived, and the accuracy of the spectrum analysed. Promising results were obtained.
Keywords :
hyperbolic equations; radar signal processing; spaceborne radar; synthetic aperture radar; MEO SAR processing; medium-earth-orbit satellite; modified advanced hyperbolic range equation; range history approximation; synthetic aperture radar; two-dimensional spectrum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.1322
