Page 22 - Fundamentals of Radar Signal Processing
P. 22
λ Wavelength; eigenvalue
Λ Likelihood ratio
Estimated mean
θ Azimuth angle; phase; baseband transmitted signal phase
θ(t) Phase modulation of waveform
Non-baseband transmitted signal phase
θ Vector of random phases
θ 3 3-dB azimuth beamwidth
θ az Azimuth beamwidth
θ el Elevation beamwidth
θ nn Null-to-null azimuth beamwidth
θ SAR Effective beamwidth of synthetic aperture radar
θ t Target angle of arrival
Θ Parameter to be estimated
Θ Parameter vector to be estimated
Estimate of Θ
Estimate of Θ
ρ = ζ exp[jψ] = ρ I Complex baseband reflectivity
+ jρ Q
ρ I Baseband reflectivity in-phase (I) component
ρ Q Baseband reflectivity quadrature-phase (Q) component
ρ , ρ fg Normalized autocorrelation or cross-correlation function
f
ρ' Effective baseband complex reflectivity
Complex non-baseband reflectivity
Non-baseband reflectivity in-phase (I) component
Non-baseband reflectivity quadrature-phase (Q) component
Cross-range averaged effective baseband complex
reflectivity
Range spatial spectrum (Fourier transform of )
σ = |ρ| = ζ 2 Radar cross section (RCS)
2
σ 0 Area reflectivity
σ h Surface roughness
Variance of random variable x
Precision of estimate
Σ Diagonal matrix of clutter powers
ζ Baseband reflectivity amplitude (ζ ≥ 0)
