deutsch  | Home | Sitemap | KIT

MIRA36-S cloud radar

Fig.1: MIRA36-S cloud radar (Metek Comp., Elmshorn, Germany) Fig.2:MIRA36-S cloud radar, in field campaign.
                                      Fig.3: Measurment of Z, w and LDR.

Technical data:
Radar Type: Mono static, pulsed, magnetron
Frequency: 35.5 GHz ± 0.2 GHz
Peak Power: 30 kW
Duty Cycle: max 1:500; typically 1:1000
Pulse Width: 100, 200, and 400 ns according to  15, 30, and 60 m
range resolution
Minimum Range:  150 m,  full sensitivity -6 dB above 300 m, full
sensitivity-1.5 dB above 400 m, full sensitivity above 500 m
Maximum Measuring Range: 500 range gates = 15 km / 30 m
Doppler Velocity Resolution: 0.02 m/s
Pulse repetition frequency (PRF): 2.5 kHz, 5kHz, and 10 kHz,
velocity un-ambiguity of 11 - 42 m/s
FFT Length: 128, 256, 512, 1024
Minimum Averaging Time: Moments of instantaneous spectra can be
evaluated without skipping samples if NFFT > 128.
ADC for sampling the I-Q-Signals:  50 MHz / 14 Bit
Antenna Type: Cassegrain
Diameter of Antenna: 1.2 m
Antenna Beam Width (6 dB/two-way): 0.52° x  0.52°
Antenna Gain: 50.4 dBi
Polarisation isolation:  -35 dB
Precision for Antenna Positioning: 0.1°
Scan range azimuth direction: -183°...+183°
elevation direction: -45°...+45°
Scan velocity (max), both directions:  10°/s
Acceleration (max), both directions: 10°/s²
Receiver Noise Figure (LNA + following): 3.4 dB (LNA)
Losses: 2.3 dB (T-R-switch), 0.4 dB (waveguides receiving path),
0.9 dB (w.g. + circ. transmitting path)
Sensitivity at 5 km, PRF=5 kHz, 200 ns, NFFT=256, averaging time =
0.1 s:
-44 dBZ