Description

Accurate direction finding with measurement and analysis capabilities in a single unit
Key facts
  • Tried and tested DF method used by 24 regulatory authorities worldwide
  • High-precision DF method at an excellent price/performance ratio (patented method)
  • Reliable DF results even in difficult environments (e.g. urban areas with up to 50 % reflection)
  • Direction finding of signals in the frequency range up to 8.2 GHz
  • Detection of extremely short emissions at unknown frequencies due to high-speed panorama scan (optional)
  • Measurement methods in line with ITU recommendations (optional)
  • Realtime event capture (REC) for I/Q recordings and realtime replay (optional)

Brief description The R&S®DDF255 combines the extremely powerful R&S®ESMD wideband monitoring receiver with the accurate correlative interferometer DF method. This combination yields a high-precision wideband direction finder featuring extensive measurement and analysis functions. With its high integration density and optional DC power supply, the R&S®DDF255 is also ideal for mobile applications.
Features & Benefits
  • Extended applications
    • Fast direction finding and spectrum monitoring, analysis and demodulation of wideband signals
    • Parallel monitoring and demodulation of one plus four signals within realtime bandwidth
    • Time domain analysis up to 20 MHz bandwidth with R&S®DDF255-ZS zero span option
  • Effective measurements in line with ITU recommendations The R&S®DDF255 fulfills all ITU recommendations for monitoring direction finders and receivers.
    • Option for ITU-compliant measurements on signal parameters for AM, FM and PM-modulated signals (e.g. modulation index, occupied bandwidth and phase deviation)
    • Offline measurements on digitally modulated signals using the R&S®CA100IS software and suitable options (in line with ITU recommendation SM1600)
  • Wideband direction finding with realtime bandwidth of up to 20 MHz
    • Parallel determination of bearings of all transmitters within the realtime bandwidth
  • Fast and reliable radiolocation due to high DF accuracy
    • High-precision correlative interferometer DF method using multi-element DF antennas (VHF/UHF/SHF)
  • High-resolution IF spectrum
    • All spectrum details visible in DF mode
  • Direction finding up to 8.2 GHz
    • Fast, effective interference detection
  • Recording and replaying of up to 80 MHz wide I/Q data
    • Never miss an event: activation of recordings with flexible realtime event capture (REC)
    • Signals as received from an antenna: all receiver functions available when replaying I/Q data
    • Detailed display: replay of I/Q data with increased time resolution
    • Replay in realtime: realtime replay of recorded data in the receiver
  • Map display with GNSS position
    • Map display of current direction finder location
    • Selectable display of recorded results (e.g. spectra) relative to a position
    • Map material based on OpenStreetMap (OSM)
    • For receivers with front panel operation or for external R&S®DDF255 GUI software
  • Hardware-accelerated multichannel signal processing
    • Multichannel signal detection and analysis in a networked system
    • Parallel multichannel output of more than 100 channels
    • Multichannel digital downconversion (DDC) signal extraction from the R&S®DDF255 realtime bandwidth with R&S®DDF255-DDCE and R&S®CA120FFP
    • Automatic detection of fi xed frequency and burst signals with R&S®DDF255-HRP and R&S®CA120DSC
    • Automatic detection of frequency agile short-time signals with R&S®DDF255-ST
  • TDOA ready with high-accuracy timestamps and GNSS synchronization of frequency and time
    • Synchronization of receiver frequency and time using the R&S®DDF255IGT2 internal GNSS module
    • High-accuracy timestamps in I/Q baseband data stream for use in TDOA systems
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