Radiometer for Ka-band Antenna System

Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

Areas of Application
— IOT measurements
— Atmospheric attenuation measurements /monitoring
An important part of the Ka-band communication is that the frequencies above 10 GHz are strongly influenced by weather conditions: rain, snow, clouds, etc. In order to improve the performance and gain more advantages from Ka-band frequencies, the propagation research needs to be conducted. The radiometer is required for determination of atmospheric attenuation in the Ka-band, especially for geostationary satellite In Orbit Testing (IOT). Therefore the radiometer data needs to be considered in the IOT-software during these tests. Also it should be possible to monitor the radiometer-data for weather related long term studies. The IOT Measurements are performed in the following polarizations: V, H, LHCP and RHCP. The radiometer shall support IOT measurements in all polarizations. If radiometric measurements are performed in linear polarizations (H and V) only, the radiometer should provide data for atmospheric attenuation in circular polarization (e.g. by calculation) as well. The method of conversion should be described in the manufacturers offer to the DLR. The manufacturer shall outline whether ionospheric and/or galactic influences have to be considered in the Ka-band radiometric measurements.
An important part of the Ka-band communication is that the frequencies above 10 GHz are strongly influenced by weather conditions: rain, snow, clouds, etc. In order to improve the performance and gain more advantages from Ka-band frequencies, the propagation research needs to be conducted. The radiometer is required for determination of atmospheric attenuation in the Ka-band, especially for geostationary satellite In Orbit Testing (IOT). Therefore the radiometer data needs to be considered in the IOT-software during these tests. Also it should be possible to monitor the radiometer-data for weather related long term studies. The IOT Measurements are performed in the following polarizations: V, H, LHCP and RHCP. The radiometer shall support IOT measurements in all polarizations. If radiometric measurements are performed in linear polarizations (H and V) only, the radiometer should provide data for atmospheric attenuation in circular polarization (e.g. by calculation) as well. The method of conversion should be described in the manufacturers offer to the DLR. The manufacturer shall outline whether ionospheric and/or galactic influences have to be considered in the Ka-band radiometric measurements.
Requirements:
Requirements for the Ka-band radiometer are divided into five categories:
— RF Requirements;
— Mechanical Requirements;
— Environmental Requirements;
— Interface Requirements;
— Additional Requirements.
Further Information will be given later by a detailed description of work.
Deadlines:
Time of delivery shall be November, 14th 2013.

Deadline
Die Frist für den Eingang der Angebote war 2013-07-26. Die Ausschreibung wurde veröffentlicht am 2013-06-21.

Wer?

• • Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

Wie?

• • Mengenmessinstrumente › Strahlenmessgeräte

Wo?

• • Oberbayern › Weilheim-Schongau