Polarization
Doppler Radar
of the DLR at
Oberpfaffenhofen
| POLDIRAD Polarization Doppler Radar of the DLR at Oberpfaffenhofen |
|
| System | |
| Frequency | C-Band, 5.504 GHz = 5,45 cm wavelength |
| Maximum range | 300 km |
| Number of range bins | 452 |
| Samples per range bin | 32, 64, 12 |
| Antenna | |
| Diameter | ca. 5 m |
| Beam width | 1° horizontal and vertical |
| Gain | ca. 44,5 dB |
| Sidelobe isolation | < -32 dB |
| Cross-polarization isolation | < -28 dB |
| Position | DLR Oberpfaffenhofen (25 km soutwest of Munich) |
| Height above sea-level | 602,5 m |
| Latitude | 48° 05' 12" North |
| Longitude | 11° 16' 45" East |
| Transmitter | |
| Peak power | 400 kW |
| Pulse repetition frequency | variable from 160 to 2400 Hz |
| Pulse length | 2 µs, 1 µs and 0.5 µs |
| Loss from transmitter to antenna | ca. 2,5 dB |
| Receiver | |
| Number of channels | 2 |
| Receiver response | linear (dynamics ca. 40 dB) logarithmic (dynamics ca. 80 dB) |
| Polarization network | |
| Polarisations | variable (linear, circular, elliptic) |
| Switching time | 8 µs |