Realization and comparison of QRD algorithms for STAP

Author

Bin, Shang ; Shaohong, Li ; Yi, Ren ; Jingsheng, Li

Author_Institution

China Aviation Ind. Corp. I, BeiHang Univ., Beijing, China

fYear

2009

fDate

26-30 Oct. 2009

Firstpage

306

Lastpage

309

Abstract

For space time adaptive processing of airborne multichannel array radar, the computation load of calculating weighting vector is the heaviest. With sample matrix inversion (SMI) algorithm, QR decomposition usually is used to calculate weighting vectors. Four types of QR decomposition algorithm, Gram-Schmidt, modified Gram-Schmidt, Householder transform and Givens rotation, were studied in this paper. Through realization with ADSP-TS201, the computation efficiency and numerical stability of these four algorithms were compared. The realization results were validated with simulated multi-channel echo data.

Keywords

airborne radar; matrix inversion; space-time adaptive processing; ADSP-TS201; Gram-Schmidt algorithm; QR decomposition algorithm; QRD algorithms; airborne multichannel array radar; householder transform; modified Gram-Schmidt algorithm; multichannel echo data; sample matrix inversion algorithm; space time adaptive processing; weighting vector; Adaptive arrays; Airborne radar; Clutter; Computational modeling; Covariance matrix; Equations; Matrices; Matrix decomposition; Numerical stability; Signal processing algorithms; Multi-Channel Array Radar; QR decomposition; STAP;

fLanguage

English

Publisher

ieee

Conference_Titel

Synthetic Aperture Radar, 2009. APSAR 2009. 2nd Asian-Pacific Conference on

Conference_Location

Xian, Shanxi

Print_ISBN

978-1-4244-2731-4

Electronic_ISBN

978-1-4244-2732-1

Type

conf

DOI

10.1109/APSAR.2009.5374155

Filename

5374155