Title :
Diagonally loaded space-time adaptive detection
Author :
Liu, Weijian ; Xie, Wenchong ; Wang, Yongliang
Author_Institution :
Coll. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
In this paper, the concept of space-time adaptive detection (STAD) is presented. The diagonally loaded adaptive matched filter (DL-AMF) and the diagonally loaded adaptive coherence estimation (DL-ACE) are analyzed. Their performance is investigated, and the asymptotically analytical expression of the probability of false alarm (PFA) and the probability of detection (PD) are derived. Compared to the AMF and the ACE, the PD´s of the DL-AMF and the DL-ACE are improved dramatically, especially when the sample support is limited.
Keywords :
adaptive estimation; adaptive filters; coherence; matched filters; probability; signal detection; space-time adaptive processing; DL-ACE; DL-AMF; PFA; STAD; asymptotically analytical expression; diagonally loaded adaptive coherence estimation; diagonally loaded adaptive matched filter; diagonally loaded space-time adaptive detection; probability of detection; probability of false alarm; Clutter; Covariance matrix; Detectors; Equations; Mathematical model; Noise; Statistical distributions; Adaptive detection; STAP; diagonal loading; space-time adaptive detection (STAD);
Conference_Titel :
Radar (Radar), 2011 IEEE CIE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8444-7
DOI :
10.1109/CIE-Radar.2011.6159748
