Page 25 - Fundamentals of Radar Signal Processing
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F s                     Sampling frequency (samples per second)

               F t                     Transmitted frequency (hertz)

               F us                    Unstaggered blind Doppler frequency
               g, G                    Tracking process noise gain
               G                       Antenna voltage or power gain

               G  nc                   Noncoherent integration gain

               G  s                    Maximum receiver gain
               G  sp                   Signal processing gain

               h                       Height
               h                       Filter weight vector; beamformer weight vector

               h, H                    Tracking observation matrix
               h(t)                    Impulse response (continuous time)

               h[n]                    Impulse response (discrete time)
               H  0                    Null hypothesis (interference only)

               H  1                    Nonnull hypothesis (target plus interference)
               H(f), H(F), H(ω),
                                       Frequency response in various units
                  H(Ω)

               H(z)                    Discrete-time system function

               H (z)                   System function of N-pulse canceller
                  N
                                       Frequency response of N-pulse canceller with P staggered
               H (F)
                  N,P
                                          PRFs
               I                       Interference power; improvement factor
               I(Θ)                    Fisher information matrix

               I opt                   Improvement factor for matched filter
               I N                     Nth-order identity matrix

               I sub                   Suboptimum improvement factor
               I                       In-phase channel

               I k                     In-phase component, sample k
               I(·, ·)                 Incomplete gamma function

               I(·)                    Fisher information matrix

               J (t)                   Jammer signal
                 n
               J                       Jammer signal sample vector

                                       Tracking filter gain; Kalman filter gain (symbol varies with
               K, k, K
                                          dimensionality)
               k p                     Stagger ratio

               k Δ/Σ                   Lobing antenna Δ/Σ error slope
                                       Spatial frequency (cycles per meter); DFT size; normalized
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