Monopulse processor digital correction circuit

Details Monopulse processor digital correction circuit Monopulse processor digital correction circuit

1990-03-26

1991-02-19

Barron, Jr., Gilberto

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

Determining direction

Monopulse

342174, 342194, G01S 1344, G01S 740

Patent

active

049948105

ABSTRACT:
A method and correction circuit is described incorporating a monopulse receiver, injecting a first signal of known amplitude and arbitrary phase and a second signal of the same amplitude shifted 90.degree. and measuring the output voltages of the channel and using the measurements to generate four coefficients which may be mathematically applied to the ouptut signals of the channel to provide a corrected output. The invention overcomes the problem of compensating for phase and gain drift in the in-phase and quadrature paths of the sum and difference channels of a monopulse receiver.

REFERENCES:
patent: 3950750 (1976-04-01), Churchill et al.
patent: 4003054 (1977-01-01), Goldstone
patent: 4021804 (1977-05-01), Dounce et al.
patent: 4040055 (1977-08-01), Donahue et al.
patent: 4484194 (1984-11-01), Arvidsson
patent: 4905010 (1990-02-01), Baechtiger et al.
F. E. Churchill et al., "The Correction of I and Q Errors in a Coherent Processor", IEEE, Transactions on Aerospace and Electronic Systems, vol. AES-17, No. 1, Jan. 1981, pp. 131-137.
A. I. Sinksy et al., "Error Analysis of a Quadrature Coherent Detector Processor", IEEE, Transactions on Aerospace and Electronic Systems, vol. AES-10, No. 6, Nov. 1974, pp. 880-883.

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