Digital systems for data acquisition and processing
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Data acquisition and signal processing system for SAR airborne radars
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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
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Data acquisition and processing system for searching and tracking radars
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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
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Data acquisition and signal processing system for Doppler Polarimetric Meteorological Radars
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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
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