Method and apparatus for improved automatic fequency control

Details Method and apparatus for improved automatic fequency control Method and apparatus for improved automatic fequency control

1991-12-06

1992-09-29

Tubbesing, T. H.

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

With particular circuit

Automatic frequency control

342174, G01S 703

Patent

active

051517035

ABSTRACT:
The frequency of a variable frequency oscillator in a pulsed radar is adjusted using samples of an IF signal. An initial frequency adjustment is made using a sample taken during RF transmission. This initial adjustment contains an inaccuracy introduced by the magnetron's activity. An additional adjustment is made using temperature dependent values stored in a memory. Yet another adjustment is made during the radar's receive time using signals reflected by targets.

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