Radar Cross Section (RCS) - MATLAB Simulations for Radar Systems Design - page 511

– s RR ++

2

s RL s LR – s LL

s HH = ------------------------------------------------------

js RR ( – s LR + s RL – s LL )

s VH = --------------------------------------------------------

2

(11.26)

– js RR ( + s LR – s RL – s LL )

s HV = -----------------------------------------------------------

2

s RR ++

2

s LL js RL + s LR

s VV = ----------------------------------------------------

11.5. RCS of Simple Objects
This section presents examples of backscattered radar cross section for a
number of simple shape objects. In all cases, except for the perfectly conduct-
ing sphere, only optical region approximations are presented. Radar designers
and RCS engineers consider the perfectly conducting sphere to be the simplest
target to examine. Even in this case, the complexity of the exact solution, when
compared to the optical region approximation, is overwhelming. Most formu-
las presented are Physical Optics (PO) approximation for the backscattered
RCS measured by a far field radar in the direction (

θϕ , ), as illustrated in Fig.

11.15.

In this section, it is assumed that the radar is always illuminating an object
from the positive z-direction.

Direction to
receiving radar

Z

θ

sphere

Y

ϕ

X

Figure 11.15. Direction of antenna receiving backscattered waves.