Digital systems for data acquisition and processing

Data acquisition and signal processing system for SAR airborne radars

The system performs the following functions:

  • Clock transmitter and receiver units,
  • Forms time series for providing binary phase coding for pulse compression,
  • Analog-to-digital conversion of received signals,
  • Digital pulse compression,
  • Provide an altimeter mode,
  • FFT with 1024 points,
  • FIR filtration up to 1024 points with individual figures for each gate,
  • Synthesize aperture with taking into account flight parameters and antenna position with matrix dimension of up to 1024.256 points and reference function length of up to 255 points.

Details


Data acquisition and processing system for searching and tracking radars

The system performs the following functions:

  • Clock transmitter and receiver units,
  • Analog-to-digital conversion of received signals,
  • Digital quadrature demodulation of received signals,
  • Automatic gain control and equalization of the amplitude and phase characteristics of the receiver channels,
  • Coherent averaging of received signals based on FFT with the length of 16, 32, 64 points,
  • Clutter suppression by using IIR filter of a six order in each gate,
  • Production of control signals for handling antenna steering mechanism to provide scanning, target detection, and target tracking modes,
  • Production of data for radar image displaying, including mapping.

Details


Data acquisition and signal processing system for Doppler Polarimetric Meteorological Radars

The system performs the following functions:

  • Digital coherent-on-receiver processing of received signals,
  • FFT with the length of 128.1024 points and spectra averaging,
  • Calculation of signal-to-noise ratio, average Doppler frequency and variation of received signals,
  • Transferring processed data to host computer,
  • Producing synchronization pulses for transmitter.

Details