r&s®ddf205 digital direction finder | 概览 -55体育

accurate direction finding in a compact unit

  • 概览

key facts

  • tried and tested technology used by 24 regulatory authorities worldwide
  • high-precision df method at an excellent price/performance ratio (patented method)

brief description

the r&s®ddf205 combines the new, highly integrated r&s®eb500 monitoring receiver with the accurate correlative interferometer df method.

features

  • extended applications
  • fast and reliable radiolocation due to high df accuracy
  • innovative df antennas

specifications

frequency range, df mode
base unit 20 mhz to 3 ghz
with r&s®ddf205-hf option 300 khz to 3 ghz
with r&s®ddf205-fe option 20 mhz to 6 ghz
with r&s®ddf205-hf and r&s®ddf205-fe options 300 khz to 6 ghz

key facts

  • tried and tested technology 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)
  • compact dimensions and low power consumption

brief description

the r&s®ddf205 combines the new, highly integrated r&s®eb500 monitoring receiver with the accurate correlative interferometer df method. this unique combination performs precise radio direction finding though it is compact and has low power consumption. featuring wideband df antennas and the ability to be powered from a dc source, the r&s®ddf205 is also ideal for mobile applications.

features & benefits

  • extended applications
    • fast spectrum monitoring with scan speeds of up to 12 ghz/s
    • display and demodulation of signals with up to 20 mhz bandwidth
    • wideband df antennas and dc power supply capability for mobile operation
    • parallel monitoring and demodulation of one plus three signals within realtime bandwidth
    • online signal analysis with live streaming over lan interface, e.g. with r&s®ca100 and suitable options
      • signal analysis and classification
      • detection of modulation mode and transmission quality (eye diagram)
      • extraction of signal content using bitstream analysis
    • offline signal analysis of recordings
  • fast and reliable radiolocation due to high df accuracy
    • use of high-precision correlative interferometer df method
    • higher immunity to reflections due to df antennas with a very large number of antenna elements
  • innovative df antennas
    • active/passive switchover with just a mouse click
    • exceptionally high df sensitivity
    • integrated, extendible lightning protection
    • easy replacement of df antennas
  • effective measurements in line with itu recommendations

    the r&s®ddf205 fulfills all itu recommendations for direction finders and receivers:

    • option for comprehensive, itu-compliant measurement methods including, for example:
      • frequency and frequency offset, field strength, modulation, spectrum occupancy and bandwidth
      • offline measurements on digitally modulated signals using the r&s®ca100is software and suitable options (in line with itu recommendation sm1600)
  • direction finding up to 6 ghz
    • fast, effective interference detection
  • high-resolution if spectrum
    • all details visible in df mode

specifications

frequency range, df mode
frequency range base unit 20 mhz to 3 ghz
  with r&s®ddf205-hf option 300 khz to 3 ghz
  with r&s®ddf205-fe option 20 mhz to 6 ghz
  with r&s®ddf205-hf and r&s®ddf205-fe options 300 khz to 6 ghz
frequency range, receive mode
frequency range base unit 20 mhz to 3.6 ghz
  with r&s®ddf205-hf option 8 khz to 3.6 ghz
  with r&s®ddf205-fe option 20 mhz to 6 ghz
  with r&s®ddf205-hf and
r&s®ddf205-fe options		 8 khz to 6 ghz
df mode
df method vhf/uhf/shf correlative interferometer
  hf watson-watt
system df accuracy1) depends on df antenna (i.e. r&s®add119, r&s®add196, r&s®add075), in reflection-free environment, with lightning protection, in line with report itu-r sm.2125 (limited to one modulation type) and recommendation itu-r sm.854
  300 khz to 30 mhz ≤ 2° rms
  20 mhz to 80 mhz typ. 1° rms
  80 mhz to 1.3 ghz typ. 0.5° rms
  1.3 ghz to 6 ghz typ. 1° rms
system df sensitivity depends on df antenna (i.e. r&s®add119, r&s®add196, r&s®add075), for 5º rms df fluctuation, 5 s integration time and 250 hz (hf)/600 hz (vhf/uhf/shf) df bandwidth, in line with report itu-r sm.2125
  300 khz to 80 mhz typ. 14 µv/m to 4 µv/m
  80 mhz to 1.3 ghz typ. 1 µv/m
  1.3 ghz to 6 ghz typ. 2 µv/m
realtime bandwidth for broadband direction finding with r&s®ddf205-wdf option up to 20 mhz
minimum signal duration for single-burst signals, in line with report itu-r sm.2125  
  vhf/uhf/shf 1 ms
  hf 2 ms
receive mode
analysis bandwidth   up to 20 mhz
demodulation bandwidth   up to 20 mhz
scan speed with r&s®ddf205-ps option up to 12 ghz/s

1) measurement in reflection-free environment. the rms error is calculated from the bearings of evenly distributed samples versus azimuth and frequency.

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