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Table 2.

Parameters for the calculation of radar sensitivity to interferencesa.

Parameter Description Value
G Maximum antenna gain 27 dBi
PT Pointing in elevation ~6–8°
BW Beam width 10° at 3 dB
S min Minimum detectable signal at antenna output −103 dBm
CL Cable loss 2 dB
RBW Typical receiver bandwidth 5.5 MHz
S/I Signal to interference ratio 12 dB
MG Aeronautical safety margin and multiple technology allowance 12 dB
a

We follow here the methodology by Frequentis (2007), where a conservative interference threshold at receiver input is calculated as: S min + G − CL − (S/I) − MG, which amounts to −102 dBm.

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