Precipitation at the Ground: Radar Techniques
321
Symbol Parameter
Units
c
speed of light
ms
f
transmitted frequency
Hz
fd
Doppler frequency shift
Hz
P r
received power
mW
or
dBm
Pt
transmitted power
kW
PRF
pulse repetition frequency
Hz
T
pulse
repetition
time ms
(=1/PRF)
w
antenna rotation rate
deg S-1 or
rpm
>.
transmitted wavelength
cm
¢
azimuth angle
deg
(h
beamwidth between half deg
power points
T
pulse width
ms
I
elevation angle
deg
Table 12.9: Physical radar parameters and units.