Empirical Doppler Characterization of Signals Scattered by Wind Turbines in the UHF Band under Near Field Condition

Table 2

Relations between the spectral width, the PSD for the end frequencies, and the SNR difference with respect to the static case.

Δ𝑓 (Hz)	mean{𝑐,𝑔}	ΔSNRest (dB)
Δ𝑓≥3/4⋅𝑓𝑑	any	>1 dB
1/2⋅𝑓𝑑≥Δ𝑓>3/4⋅𝑓𝑑	≤35	>1 dB
	>35	<1 dB
Δ𝑓<1/2⋅𝑓𝑑	any	<1 dB