NOTE: Extended ENIGMA IVDS features are marked in RED

Number of bins ENIGMA IV-ID = 6000
ENIGMA IV-DS = 8000 Single and dual polarization version
Main features
  • PCI + host board
  • XMT “COHO” board – optional
Typical base resolution 25 – 125m
Range 10-400km, 600km option
PRF 10-3000 Hz
Number of Pulse widths 4 with independent configurable matched filters (up to 1280 taps)
Dual PRF Stagger Modes None, 2/3, 3/4 and 4/5
Output data Corrected reflectivity Z

  • Uncorrected reflectivity UZ
  • Attenuation Corrected Reflectivity AZh
  • Radial velocity V
  • Folded Radial Velocity VF
  • Spectral Width W
  • Clutter power CCOR
  • Signal quality index SQI
  • In phase/Quadrature signal I, Q
  • Logarithmic power LOG
  • Signal Noise Ration SNR
  • Censor Map
  • Power spectrum DFT
  • RhoHV (Dual polarized radar)
  • PhiDP (Dual polarized radar)
  • PhiH (Dual polarized radar H-transmit)
  • KDP (Dual polarized radar)
  • ZDR (Dual polarized radar)
  • Attenuation Corrected ZDR (Dual polarized radar)
  • LDR (Dual polarized radar H-transmit)
  • RhoH (Dual polarized radar H-transmit)
Processing Modes
  • Pulse Pair Processing (PPP)
  • FFT Processing (FFT)
  • DFT Processing (DFT)
  • Staggered PRT Processing (DPRT)
PPP
  • Selectable 40dB and 50dB IIR filter coefficients
  • Filter width adjustable in 8 steps (All pass, Filter 1-7)
  • Range adjustable 1-400km
  • Range mask for range and elevation dependent filter selection
  • Filter zeroing on/off
  • Configurable filter stabilization delay
  • Clutter micro suppression
FFT and DFT
  • Adaptive filter width adjustable in 8 steps (All pass, Filter 1-7)
  • Range adjustable 1-400km
  • Range mask for range and elevation dependent filter selection
  • Clutter micro suppression
  • Selectable interpolation:
  • DC cancellation
  • Interpolation
  • Dual slope interpolation
  • Selectable tapering window
  • Rectangle
  • Hamming
  • Blackman-Harris 3
  • Blackman-Harris 4
  • Bartlett
  • Hann
  • Welch
  • Kaiser-Bessel
DPRT
  • Filter width adjustable in 8 steps (Allpass, Filter 1-7)
  • Range mask for range and elevation dependent filter selection
  • Clutter micro suppression
Time averaging Adjustable time samples (8-1024) or Dynamic angle syncing (0.05°-5°)
Data quality algorithms
  • Rain attenuation correction
  • 1/r² range normalization
  • Gas attenuation correction
  • Configurable reflectivity speckle remover (2 Dimensional)
  • Configurable velocity speckle remover
  • Configurable spectrum width speckle remover
  • Configurable dual polarization moment speckle remover
  • Configurable thresholding with NOISE, CCOR, SIGPOW, RHOHV and SQI
  • Second trip removal
  • Configurable KDP interpolation (Gaussan, B-Sline, 0.125-5km)
Sector Blanking
  • 32 configurable azimuth/elevation sectors (0.05° resolution)
I/Q Recorder Pulse wise I/Q recording in 32Bit IEEE floating point format to the internal hard disk
Configuration FROG/MURAN Network capable GUI, telnet or through the built in HTTP server (comprehensive browser interface)
Status output
  • HTTP Server interface
  • ASCII Log messages through telnet port
Matched filter designer GUI program for semi automatic calculation of matched filter coefficients (for transmitter pulse) and verification. Comprehensive AFC configuration and visualization.
Status information
  • Host CPU load, CPU temperature and Memory usage
  • Host Voltages
  • IFD power supply
  • IFD temperatures
  • A/D converter status
  • AFC Status
  • Sector blanking status
  • Number of pulses for autocorrelation
PCI receiver card Standard PCI card.

  • Buffered 5V, 50Ohm trigger output
  • Parallel standard angle TAG input (Azimuth and Elevation)
  • Optional: Serial (3 wire) angle TAG input
  • Coaxial high speed serial uplink (isolated)
  • Fiber optic 1.2 GBits/s downlink
Host enclosure Standard 19″ rack mount (3 or 4 HE). Depth 420mm or custom enclosure.
Host boot media Robust flash disk for antenna mount receiver or single hard disk drive. Optional: RAID 10 for I/Q recorder (Rack mount only)
Host Power consumption < 400 W, 230 V, 50 Hz