Radar apparatus

Details Radar apparatus Radar apparatus

1993-05-06

1994-07-12

Hellner, Mark

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

Determining distance

With frequency modulation

342196, G01S 1308

Patent

active

053292847

ABSTRACT:
Radar apparatus provided with a transmit generator and antenna means for the transmission of comparatively long, linearly frequency-modulated transmitter pulses. Echo signals are received by antenna means and a heterodyne signal is generated in mixer stage. Propagation time differences for different echo pulses are compensated by means of a dispersive delay element incorporated in the radar receiver. Distortion of the echo pulses in the dispersive delay element is corrected on the basis of a Fresnel ripple correction. A Fourier transformation unit transfers the corrected echo pulses to time domain video with low sidelobes.

REFERENCES:
patent: 4028700 (1977-06-01), Carey et al.
patent: 4379295 (1983-04-01), Lewis et al.
patent: 4524362 (1985-06-01), Lewis
patent: 4524363 (1985-06-01), Kretschmer
patent: 4912472 (1990-03-01), Reits
patent: 5023618 (1991-06-01), Reits

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