Self-calibration of stacked beam radar

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

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343 12SB, 343 16R, G01S 740, G01S 718

Patent

active

045381500

ABSTRACT:
An apparatus and method for calibrating the output signal of a receiver having amplification over a predetermined input signal amplitude range has been described incorporating means for generating a sequence of reference signals each having a predetermined amplitude, means for coupling the sequence of reference signals to the input of the receiver, means for sensing the output reference signals of the receiver, means for storing output reference signals indicative of the amplitude along with corresponding input reference signals to provide a table of receiver input and output signals over the dynamic range such as 70 dB of the receiver. Unknown input signals are calibrated by looking up and comparing the amplitude of the output received signals of the receiver with stored output reference signals in the table and selecting the corresponding known input signals previously provided by the calibration signals. The invention overcomes the problem of accuracy and stability in the gain of the receiver over a wide dynamic range, such as 70 dB, and for non-uniform amplitude gain between a plurality of receiver channels.

REFERENCES:
patent: 3064252 (1962-11-01), Varela
patent: 3170156 (1965-02-01), Downs
patent: 3170157 (1965-02-01), Schreitmueller
patent: 3471855 (1969-10-01), Thompson

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