Calibration method and apparatus for receiving transponder reply

Details Calibration method and apparatus for receiving transponder reply Calibration method and apparatus for receiving transponder reply

1993-11-16

1995-11-21

Pihulic, Daniel T.

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

Testing or calibrating of radar system

By monitoring

G01S 740

Patent

active

054691729

ABSTRACT:
Calibration apparatus for an antenna/receiver system having, in combination, means for receiving one or more electromagnetic data encoded signals from a transmitter and producing in response to each data signal two signals having a phase relationship, the receiving means comprising an antenna; signal processing means for using the phase relationship to determine information related to the data signals; and means for coupling a calibration signal into the antenna to produce two calibration signals having a known phase relationship; the signal processing means using the known phase relationship to compensate for phase errors when processing the data signals.

REFERENCES:
patent: 3854133 (1974-12-01), Cabion

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