Surface and Volume Clutter - MATLAB Simulations for Radar Systems Design - page 284

Symbol Description Value

radar peak power 20 KW

P t

radar operating frequency 3GHz

f 0

effective noise temperature 290 degrees Kelvin

T 0

noise figure 6 dB

F

L radar total losses 8 dB

Uncompressed pulsewidth 20 microseconds

τ′

Figure 6.12 shows a plot of the CNR and the SIR associated with the mis-
sile. Figure 6.13 is similar to Fig. 6.12 except it is for the aircraft case. It is
clear from these figures that the required SIR has been degraded significantly
for the missile case and not as much for the aircraft case. This should not be
surprising, since the missileÓs altitude is much smaller than that of the aircraft.
Without clutter mitigation, the missile would not be detected at all. Alterna-
tively, the aircraft detection is compromised at

R ≤ 80 Km . Clutter mitigation

is the subject of the next chapter.

Figure 6.12. SNR, CNR, and SIR versus range for the missile case.