... 1996.[14] Pendergrass, N.A., Mitra, S.K. and Jury, E.I., Spectral transformations for two-dimensional digital filters,IEEE Trans. on Circuits and Systems,CAS-23(1), 26–35, Jan. 1976.[15] Wang, H. ... LLCSpace-TimeAdaptiveProcessingforAirborneSurveillanceRadarHongWangSyracuseUniversity70.1MainReceiveApertureandAnalogBeamforming70.2DatatobeProcessed70.3TheProcessingNeedsandMajorIssues70.4TemporalDOFReduction70.5AdaptiveFilteringwithNeededandSample-SupportableDOFandEmbeddedCFARProcessing70.6Scan-To-ScanTrack-Before-DetectProcessing70.7Real-TimeNonhomogeneityDetectionandSampleConditioningandSelection70.8SpaceorSpace-RangeAdaptivePre-SuppressionofJammers70.9ASTAPExamplewithaRevisittoAnalogBeamforming70.10SummaryReferencesSpace-TimeAdaptiveProcessing(STAP)isamulti-dimensionalfilteringtechniquedevelopedforminimizingtheeffectsofvariouskindsofinterferenceontargetdetectionwithapulsedairbornesurveillanceradar.Themostcommondimensions,orfilteringdomains,generallyincludetheaz-imuthangle,elevationangle,polarizationangle,dopplerfrequency,etc.inwhichtherelativelyweaktargetsignaltobedetectedandtheinterferencehavecertaindifferences.Inthefollowing,theSTAPprinciplewillbeillustratedforfilteringinthejointazimuthangle(space)anddopplerfrequency(time)domainonly.STAPhasbeenaveryactiveresearchanddevelopmentareasincethepublicationofReedetal.’sseminalpaper[1].WiththerecentlycompletedMultichannelAirborneRadarMeasurementproject(MCARM)[2]–[5],STAPhasbeenestablishedasavaluablealternativetothetraditionalapproaches,suchasultra-lowsidelobebeamformingandDisplacedPhaseCenterAntenna(DPCA)[6].MuchofSTAPresearchanddevelopmenteffortshavebeendrivenbytheneedstomakethesystemaffordable,tosimplifyitsfront-hardwarecalibration,andtominimizethesystem’sperformancelossinseverelynonhomogeneousenvironments.Figure70.1isageneralconfigurationofSTAPfunctionalblocks[5,7]whoseprincipleswillbediscussedinthefollowingsections.c1999byCRCPressLLCFIGURE 70.5: ... that also meet the basic requirements for successfuladap-tive processing, such as the “signal blocking” requirement developed under the generalized sidelobecanceller [32]. Two examples of proposed...
... Blind equalization of digital communication channels usinghigher order moments,IEEE Trans. Acoust. Speech, Signal Processing,SP-39(2), 522–526,Feb. 1991.[34] Proakis, J.G., Digital Communications,McGraw-Hill, ... and Eq. (68.7) can be rewritten to reflect this situation.68.2.7 Block Signal ModelIt is often convenient to handle signals in blocks. Therefore, we may collect M consecutive snapshotsof x(·) ... co-channel digital signals usingantenna arrays with applications to PCS, inProc. ICC’94,700–794, 1994.[43] Talwar, S., Viberg, M. and Paulraj, A., Blind separation of synchronous co-channel digital signals...
... MethodsEigenstructure estimation can be classified as (1) block or (2) recursive. Block methods simplycompute an EVD, SVD, or related decomposition based on a block of data. Recursive methodsupdate the previously ... represents the diagonal unitarytransformation that makes the rest of the problem real, H is the block Householder transformationthatrotates(or moreprecisely, reflects) thespherical subspaces sothat ... by their average values, d(n),to produce a sphericalized noise subspace. We must then apply block Householder transformationsto concentrate all of the power in the new data vector into a...
... ifoneadopts a systemidentification perspective to the filtering problem. To this end, consider the diagram presented inFig. 23.1. Available to the adaptive filterare two external signals: the input ... ,(23.13)W∞= limn→∞E{W(n)} .(23.14)c1999 by CRC Press LLCWilliamson, G.A. “Adaptive IIR Filters” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC...
... for-mulation is depicted in Fig. 20.1,wherez−1denotes the unit-time delay operator. The diagram contains two system blocks: one representing the unknown plant or system and the other containingc1999 ... filter could be critical to the proposed application. Moreover, tech-nological advancements in digital circuit and VLSI design have spurred an increase in the range ofnew adaptive filtering applications ... structure. The unknownplant represents an arbitrary relationship between its input and output. This block might implementa pole-zero transfer function, an all-pole or autoregressive transfer function,...
... Analysis of Other Adaptive FiltersBecause ofthe difficulties in performing multiplicationsin thefirst digital hardware implementationsof adaptive filters, many of these systems employed nonlinearities ... Walach, E.,Adaptive Inverse Control,Prentice-Hall, Upper Saddle River, NJ,1996.[9] Proakis, J.G., Digital Communications,3rd ed., McGraw-Hill, New York, 1995.[10] Murano, K., Unagami, S., and ... .(19.36)c1999 by CRC Press LLCIndependent and Identically Distributed (I.I.D.) Random ProcessesIn digital communication tasks, an adaptive filter can be used to identify the dispersive charac-teristics...
... harmonic signals,Signal Process.Lett.,Vol. 2, pp. 213–215, 1995.[8] Hayes, M.S.,Statistical Digital Signal Processing and Modeling,John Wiley & Sons, New York,1996.[9] Haykin, S.,Advances ... n2(14.70)c1999 by CRC Press LLCDjuric, P.M. & Kay S.M. “Spectrum Estimation and Modeling” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC...
... s∗c(−i). Block diagrams for the correlator and matched filter implementations of theLRT are shown in Figs. 13.3 and 13.4.c1999 by CRC Press LLCHero, A. “Signal Detection and Classification”Digital...
... modular de monitoreo digital Interconexión de 75 ohmiosDiseñado con el fin de facilitar y flexibilizar la administración de señales de red, el sistemamodular de monitoreo digital (DMM) de ADC ... circuitoswww.adc.com • +1-952-938-80803/02 • 100346SP Sistema modular de monitoreo digital 2Sistema modular de monitoreo digital AplicaciónEl sistema DMM se utiliza principalmente en entornos de co-ubicación ... ASALIDAENTRADAUnidaddeprueba3/02 • 100346SP Sistema modular de monitoreo digital 5www.adc.com • +1-952-938-8080Sistema modular de monitoreo digital Configuración estándarD3C-0024TVista frontalCaracterísticas•...
... configuration.c1999 by CRC Press LLCSinger, A.C. “Signal Processing and Communication with Solitons” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC...
... BINLMS algorithm is that instantaneous throughput may be high due to the block- processingrequired.References[1] Proakis, J., Digital Communications,2nd ed., McGraw-Hill, New York, 1989.[2] Hatzinakos, ... sampler preceding the decision device is to discretize the aggre-FIGURE 31.1: The signal flow blockdiagram for the equivalent channel description. The equalizerobserves x(nT ), a sampled version ... adpative algorithm for stable decision-feedback filtering,IEEE Trans. Circuits Syst. II: Analog and Digital Signal Processing,40 CAS-II, Jan. 1993.c1999 by CRC Press LLCpulse shaping filter,...
... by CRC Press LLCMammone, R.J. & Zhang, X. “Robust Speech Processing as an Inverse Problem” Digital Signal Processing HandbookEd. Vijay K. Madisetti and Douglas B. WilliamsBoca Raton: CRC ... tract. It is nonstationary in that the vocal tract configuration changes overtime. A time-varying digital filter is generally used to describe the vocal tract characteristics. Thesteady-state system ... Production,Mouton and Co., Gravenhage, The Nether-lands, 1960.[3] Rabiner, L.R. and Schafer, R.W., Digital Processingof Speech Signals,Prentice-Hall, EnglewoodCliffs, NJ, 1978.[4] Atal, B.S.,...
... 4: Lập trình bằng sơ đồ bậc thang Ladder Diagram 4. Lập trình bằng sơ đồ bậc thang Ladder Diagram Các lệnh cơ bản của sơ đồ bậc thang (LADDER DIAGRAM) ! Thành phần luôn luôn phải có ... bậc thang Ladder Diagram ở ví dụ trên, việc nối song 2 điều kiện logic A và B sẽ chỉ đòi hỏi hoặc A hoặc B tác động (đóng) thì đèn C đầu ra sẽ sáng. Dới đây là 1 Ladder Diagram có dùng lệnh ... [ 23 ] Hớng dẫn tự học PLC CPM1 qua hình ảnh Chơng 4: Lập trình bằng sơ đồ bậc thang Ladder Diagram Lệnh LD NOT tạo ra 1 tiếp điểm thờng đóng ở đầu của đoạn mạch (ngợc với lệnh LD) ...