Page 120 - Fundamentals of Radar Signal Processing

FIGURE 2.12 Geometry for calculation of RCS decorrelation interval in
frequency and aspect angle.

(2.56)

To simplify the notation, define

(2.57)

K is a spatial frequency in rads/m (see App. B). Then can be considered as
θ
a function of both t and K . The correlation in the variable K , which
θ
θ
includes both aspect angle and radar frequency, is of interest. Note that is
periodic in K with period 2π/α. The deterministic autocorrelation of as a
θ
function of the lag ΔK is therefore
θ