Helicopter recognition radar processor

Details Helicopter recognition radar processor Helicopter recognition radar processor

1985-12-19

1994-12-27

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

Spectrum analysis

342193, 342 90, 342 99, 342101, G01S 7292, G01S 1352

Patent

active

053769406

ABSTRACT:
A radar processor is disclosed for processing the radar return samples from a Doppler radar receiver to discriminate helicopter targets from fixed-wing targets. The samples are passed through a helicopter filter which eliminates the target skin Doppler return, and passed the sidebands about the target skin return which are due to the helicopter rotor hub modulation. The coefficients of the helicopter filter are selected to maximize the signal-to-noise ratio. The radar processor requires only a few milliseconds on target for reliable detection and can, therefore, be easily implemented by scanning surveillance systems.

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