Principles of Modern Radar - Volume 2 1891121537

834 IndexExciter-based EP (cont.)frequency variation, 566multiple-pulse waveform, 563multiple simultaneous frequencyradiation, 566–567PRF variation, 567range resolutionnarrow-pulse, 564pulse compression, 564–565wide-pulse waveform, 562–563Expendable decoy, 545Extended clutter (chaff), 571Extended factored algorithm (EFA),485–486, 485f, 487, 488Extended Kalman filter (EKF), 13, 675Extensive cancellation algorithm (ECA),758–760, 759fFFalse targets, 542–543, 543fFaraday rotationeffect of, 590of polarization plane, 589Fast Bayesian matching pursuits (FBMP)approach, 184Fast Fourier transform (FFT), 36, 63, 172,234, 236, 645, 7202D-CCF implementations andcorrelation FFT, 749–750, 749f, 750tdirect FFT, 749f, 750–751, 751tFast Iterative Shrinkage-ThresholdingAlgorithm (FISTA), 169, 174Fast scanning (intra-pulse scanning),505–506, 506fFast-time, defined, 716–720FBMP approach. See Fast Bayesianmatching pursuits (FBMP) approachFDM. See Frequency division multiplexing(FDM)Feature-assisted tracking, 678–682, 681fFFT. See Fast Fourier transform (FFT)Field programmable gate arrays (FPGA),409, 410Finite impulse response (FIR) filters, 42, 406FIR filters. See Finite impulse response(FIR) filtersFISTA. See Fast IterativeShrinkage-Thresholding Algorithm(FISTA)FM. See Frequency modulation (FM)FOA. See Focus of attention (FOA) moduleFocal underdetermined system solver(FOCUSS) algorithm, 176Focus of attention (FOA) module, 638FOCUSS algorithm. See Focalunderdetermined system solver(FOCUSS) algorithmFoliage Penetration, Reconnaissance,Surveillance, Tracking andEngagement Radar (FORESTER)program, 707FORESTER. See Foliage Penetration,Reconnaissance, Surveillance,Tracking and Engagement Radar(FORESTER) programForward-looking array (FLA), 473Forward-scatter alignment (FSA), 601, 602Fourier analysis, 61Fourier ribbon, 235–236, 236fFourier transform, 7, 31, 645amplitude taper, 51inverse, 50matched filtering, 270, 287RDA, 295, 301, 303–304, 306RMA, 307RMC procedure, 280RSA, 290–292SAR imaging, 214–215, 216tof shifted delta function, 218squinted stripmap, 326Stolt approximation, 313time-frequency scaling property of, 227two dimensional, 448wideband phase errors, 249FPGA. See Field programmable gate arrays(FPGA)Fractional Doppler shift, 48Fragility, EP, 554Free-space attenuation, 546Free-space loss, 546Frequencyagility, 566discriminator, 537diversity, 566RMA, 306–307variation, 566Frequency division multiplexing (FDM), 135Frequency domain (FD)analysis, with complex image, 644example, 46–47, 46f, 47f, 48fimplementation steps, 45–46interpretation, 61stepped chirp waveform processing,43–45, 45fFrequency modulation (FM), 739Frequency shift keying (FSK), 70FSA. See Forward-scatter alignment (FSA)FSK. See Frequency shift keying (FSK)GGait velocitygram, 710GAL. See Gradient adaptive lattice (GAL)Galileo transmitters, 740GAMP. See Generalized AMP (GAMP)Gating, 673–674Gaussian distribution, 158, 159fGaussian g-snake model, 712Gaussian noise, disadvantage of, 541Gaussian pulse, 194–195, 195fGeneral Atomics Aeronautical Systems, 707Generalized AMP (GAMP), 180matrix uncertainty and, 182Generalized likelihood ratio test (GLRT),188, 649Generalized sidelobe canceller (GSC),482–483adaptive jammer cancellation, 427, 428fblock diagram, 482fGeocoding, InSAR, 375Geometric theory of diffraction (GTD), 186GeoSAR, 385GLObal NAvigation Satellite System(GLONASS), 740Global System for Mobile Communications(GSM), 740GLONASS. See GLObal NAvigationSatellite System (GLONASS)GLRT. See Generalized likelihood ratio test(GLRT)GMTI. See Ground moving target indication(GMTI)“Golden Rule,” 512Goldstein-Zebker-Werner (GZW) algorithm,368–370GPR imaging. See Ground-penetrating radar(GPR) imagingGPU. See Graphical processing units (GPU)Gradient adaptive lattice (GAL), 757, 758Graphical processing units (GPU), 409, 410Grating lobeseffects, 517–520sub-arrays and, 518–520, 518f, 519fGrazing angle, selection of, 221Greedy algorithms, 176–178, 178fGreen’s function, 153Ground clutter, 706–707in radar polarimetry, 617space-time properties of, 472–474covariance matrix, 472Doppler frequencies, 472–473forward-looking array (FLA), 473Hadamard identity, 473MCRAM, 473–474sidelooking array (SLA), 473Ground flash, 232Ground moving target indication (GMTI), 2clutter, 96MIMO, 140–141radars, 707, 722slow-moving target detection and,722, 722f