Radar Cross Section (RCS) - MATLAB Simulations for Radar Systems Design - page 528

where

Symbol Description Units Status

a short side of plate meters input

b long side of plate meters input

freq frequency Hz input

rcs array of RCS versus aspect angle dBsm output

Fig. 11.27c shows the GUI workspace associated with this function.

Figure 11.27c. GUI workspace associated with the function Ðrcs_rect_plate.mÑ.

11.5.7. Triangular Flat Plate

Consider the triangular flat plate defined by the isosceles triangle as oriented
in Fig. 11.28. The backscattered RCS can be approximated for small aspect
angles (

θ ≤ 30° ) by

4π A 2
λ 2

) 2 σ 0

-------------

σ = ( cos θ

(11.63)

] 2 ) 2 ) 2 [ ( sin α – ( sin ( β 2 ⁄ ) + σ 01

σ 0 = ----------------------------------------------------------------------------

(11.64)

α 2 ) 2

– ( β 2 ⁄

) 2 ] 2 σ 01 = 0.25 ( sin ϕ [ ( 2 ab ⁄ ) ϕβ cos sin – sin ϕ sin 2α

(11.65)

where α = k θϕ asin cos , β = kb θϕ sin sin , and A b 2 = ⁄ . For waves inci-

dent in the plane ϕ = 0 , the RCS reduces to