Preprints
https://doi.org/10.5194/egusphere-2022-532
https://doi.org/10.5194/egusphere-2022-532
 
29 Aug 2022
29 Aug 2022
Status: this preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).

Assessing and mitigating the radar – radar interference in the German C-band weather radar network

Michael Frech1, Cornelius Hald1, Maximilian Schaper1, Bertram Lange2, and Benjamin Rohrdantz2 Michael Frech et al.
  • 1Deutscher Wetterdienst, Observatorium Hohenpeißenberg, Albin-Schwaiger-Weg 10, 82383 Hohenpeißenberg
  • 2Deutscher Wetterdienst, Sasel

Abstract. The national German weather radar network operates in C-band between 5.6 and 5.65 GHZ. In a radar network, individual transmit frequencies have to be chosen such that radar-radar induced interferences are avoided. In an unique experiment the Hohenpeissenberg research radar and five operational systems from the radar network were used to characterize radar-radar induced interferences as a function of the radar frequency. The results allow to assess the possibility to add additional C-band radars with magnetron transmitters into the existing network. Based on the experiment, at least a 15 MHz separation of the nominal radar frequency is needed to avoid a radar-radar interference. The most efficient mitigation of radar-radar interference is achieved by the "Radar Tango". Latter refers to the synchronized scanning of all radar systems in the network. Based on those results, additional C-band radar systems can be added to the German weather radar network if a further improvement of the radar coverage is needed.

Michael Frech et al.

Status: open (until 01 Nov 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Michael Frech et al.

Michael Frech et al.

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Short summary
Weather radar data are the backbone of a lot of meteorological products. In order to obtain a better low level coverage with radar data, additional systems have to be included. The frequency range in which radars are allowed to operate is limited. A potential radar to radar interference has to be avoided. The paper derives guidelines how additional radars can be included into a weather radar network and how interferences can be avoided.