Principles of Modern Radar - Volume 2 1891121537

458 CHAPTER 10 Clutter Suppression Using Space-Time Adaptive Processings t = temporal steering vectorv t = hypothesized temporal steering vectors s−t = space-time steering vectorv s−t = hypothesized space-time steering vectorx k/s (n) = spatial data snapshot, k-th range cell, n-th pulsex k = space-time data snapshot, k-th range cellc k = clutter space-time snapshot, k-th range cellj k = RFI space-time snapshot, k-th range celln k = uncorrelated noise space-time snapshot, k-th range cell¯s k = target space-time snapshot, k-th range cellR k = null-hypothesis covariance matrix, k-th range cellR c/k = clutter covariance matrixˆR k = null-hypothesis covariance estimate, k-th range cellR s = signal covariance matrixq k (m) = m-th eigenvector for covariance matrix, k-th range cellλ k (m) = m-th eigenvalue for covariance matrix, k-th range cellr c = clutter covariance matrix rankI p = P-by-P identity matrixw s = spatial weight vectorw t = temporal weight vectorw k = space-time weight vector, k-th rangeŵ k = adaptive space-time weight vector, k-th rangeP D = probability of detectionP FA = probability of false alarm.10.1.6 AcronymsADC analog-to-digital converterAMF adaptive matched filterCFAR constant false alarm rateCNR clutter-to-noise ratioCPI coherent processing intervalDOA direction of arrivalDPCA displaced phase center antenna processingDoF degree of freedomEFA extended factored algorithmFFT fast Fourier transformFLA forward-looking arrayGSC generalized sidelobe cancellerIF improvement factorIID independent and identically distributedINR interference-to-noise ratioJDL joint domain localizedKLT Karhunen-Loève transformMCARM Multi-Channel Airborne Radar MeasurementsMDV minimum detectable velocityMMSE minimum mean square errorMTI moving target indication