Wide Band Systems, Inc. - Electronic Warfare Applications, DFD, IFM
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Instantaneous Frequency Measurement Systems, IFM

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Instantaneous Frequency Measurement Systems (IFM). Fully integrated wide band Electronic Warfare (EW) system receivers providing digital output of RF frequency, RF amplitude, RF envelope pulse width and Time of Arrival (TOA) data.

Modular configuration allows for frequency coverage from 0.5GHz to 18.0GHz. The IFM may also include:

  • Frequency Modulation on Pulse (FMOP)
  • Phase Modulation on Pulse (PMOP)
  • CW detection
  • Customer Defined Specifications
SUMMARY OF SPECIFICATIONS
IFM Receiver 0.5 - 18.0GHz
       
Frequency Measurements Requirements
  Operating Frequency Range   0.5 – 18.0GHz
  Unambiguous Bandwidth   18.0GHz minimum
  Mean Frequency Resolution   3.0MHz
  Frequency Accuracy   6.0MHz RMS
  Signal Level Range   -50 to +10dBm
       
Amplitude Measurement Requirements
  Minimum Number of Bits   8 (eight)
  Resolution   0.5 dB/bit nominal
  Linearity   Equal or better than 2dB
  Absolute Accuracy   4dB maximum
  Monotonicity   For any increase in signal level of 1.0dB,
the measured signal must not decrease
       
Time-of-Arrival (TOA) Measurement Requirements
  Minimum Number of Bits   32 (thirty-two)
  Resolution   Programmable from 25ns to 800ns, minimum
       
Pulse Width Measurement Requirements
  Minimum Number of Bits   16 (sixteen)
  Resolution   25ns minimum
  Range   100ns to CW
  Accuracy   50ns maximum

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