Arrangement enabling the contrast to be improved between the mai

Details Arrangement enabling the contrast to be improved between the mai Arrangement enabling the contrast to be improved between the mai

1977-07-22

1978-09-12

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343100LE, 343 73, G01S 728

Patent

active

041141547

ABSTRACT:
An arrangement including an integrating circuit connected to the detection circuit of a pulse compression radar. The output of the integrating circuit is connected to a display tube of the radar. The integrating circuit has a control input connected to a distance shifting circuit. The distance shifting circuit is controlled by a first distance coincidence circuit operated by a first distance designating circuit and allows the secondary alternating lobes of the main video-frequency echo signal to be integrated at predetermined times for a period equal to the length of the central peak of a secondary echo signal. A second distance coincidence circuit operated by a second distance designating circuit allows the integration to be locked on to the central peak of the secondary echo.

REFERENCES:
patent: 2804614 (1957-08-01), Alvarez
patent: 3150368 (1964-09-01), Price
patent: 3281842 (1966-10-01), Cerar et al.
patent: 3388330 (1968-06-01), Kretzmer
patent: 3568193 (1971-03-01), Barton et al.
patent: 3618095 (1971-11-01), Darlington
patent: 3651433 (1972-03-01), Langley
patent: 3696203 (1972-10-01), Leonard
patent: 4001826 (1977-01-01), Moulton

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