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Fielded radar systems may have to contend with other radars simultaneously transmitting in the same spectrum => multistatic interference. This interference may significantly degrade the radar’s sensitivity => denoted as “RF fratricide”.

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Presentation Transcript

Fielded radar systems may have to contend with other radars simultaneously transmitting in the same spectrum => multistatic interference.

This interference may significantly degrade the radar’s sensitivity => denoted as “RF fratricide”.

Utilizing the diversity among different radar waveforms, adaptive processing techniques can partially compensate for this degradation.

If different techniques of interference suppression are appropriately combined, additional sensitivity gains may be obtained.

Hybrid Signal Processing Techniques for Use in Multistatic Radars Dr. Shannon Blunt, Bill Dower [email protected]

Problem Statement

Approach

  • Combining range-domain adaptive nulling (the MAPC algorithm) with a subtractive interference canceller (the CLEAN algorithm) a significantly improved probability of detection can be obtained.

Important Issues

Results

  • The returns from the scatterers overlap each other causing sidelobe interference that can mask weaker scatterers making them harder to detect.

  • Note 20 dB improvement at Pd = 0.9.

  • The improvement in detection of the small scatterer is due to the removal of the extended target from the received signal.


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