Title :
Local Degrees of Freedom of Airborne Array Radar Clutter for STAP
Author :
Zenghui, Zhang ; Wenchong, Xie ; Weidong, Hu ; Wenxian, Yu
Author_Institution :
Coll. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha
Abstract :
In this letter, the local degree-of-freedom (LDOF) theorem for reduced-dimension space-time adaptive processing (STAP) methods is presented, and a rigorous proof is provided. LDOF is more valuable for practical STAP methods than conventional full degrees of freedom. The effectiveness of the LDOF theorem is verified, and the influences of some operations in practice on the LDOF are analyzed by simulations.
Keywords :
airborne radar; geophysical techniques; radar clutter; LDOF theorem; STAP methods; airborne array radar clutter; local degree-of-freedom theorem; reduced-dimension space-time adaptive processing methods; Local degrees of freedom (LDOFs) of clutter; space–time adaptive processing (STAP);
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2008.2009553
