Description

0.3 MHz to 3000 MHz
Key Facts
  • Wide frequency range from 0.3 (0.09) MHz to 3000 MHz
  • High probability of intercept due to high search DF speed
  • 10 MHz (-6 dB) FFT realtime bandwidth
  • Excellent large-signal characteristics
  • High adjacent-channel suppression
  • Algorithms for correlative interferometer and Watson-Watt as standard
  • Automatic squelch setting (switchable)
  • Direction finding of GSM signals (option)
  • Optimum system compatibility due to
    • efficient data compression
    • fast Ethernet and CORBA (common object request broker architecture)
  • Raw data recording (option)
  • Preclassifier (option)
  • Wide range of antennas from 0.3 MHz to 3000 MHz for stationary and mobile use

Brief Description General The R&S®DDF0xA family with its extremely high scan speed is the latest generation of Rohde & Schwarz scanning direction finders. It consists of pure HF (R&S®DDF 01A) and VHF/UHF (R&S®DDF 05A) direction finders as well as the tried-and-tested combined HF/VHF/ UHF direction finders (R&S®DDF 06A). The combination of the R&S®DDF 05A VHF/UHF direction finder and the R&S®DDF A-WB HF wideband option for direct receiving mode results in an extremely compact HF/VHF/UHF full-range direction finder. All antennas of the R&S®ADDx line plus the Antenna Interface R&S®GX060 can be used. Digital DF methods The acronym DDF in the type designation R&S®DDF0xA stands for digital direction finder, indicating that bearings are determined digitally, i.e. the complex antenna voltages are measured by a high-quality three-channel DF receiver that acts like a vector analyzer and are subsequently digitized. The bearings of all individual signals are evaluated in parallel and independently using mathematical algorithms. Both classic direction finding methods such as Watson- Watt and the modern correlative interferometer can be used. The Watson-Watt method is preferably used in the HF range in cases where only limited space is available for setting up a DF antenna (e.g. on ships). Moreover, it enables maximum scanning speed.
Features & Benefits
  • Automatic DF and location systems with high probability of intercept
  • Interception and direction finding of frequency hopping and burst signals with automatic evaluation methods
  • Internal data reduction, which limits the results to the truly interesting targets (direction-selective search) and ensures optimal use in automatic interception systems
  • Segmentation of bearings using the Emitter Preclassifier R&S® DDF®-CL (option) and delegation of tasks to hand-off receivers
  • In the case of correlation-based evaluation in the HF range also determination of elevation, implementation of single station location (SSL) function
  • Versatile stationary and mobile applications (vehicle, ship, aircraft) by using the most appropriate DF algorithms and different antenna configurations, especially those with wide-aperture characteristics
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