Monopulse processing systems

Communications: directive radio wave systems and devices (e.g. – Determining direction – Monopulse

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Details

342 37, 342149, 342427, G01S 1342, G01S 1374

Patent

active

050722247

ABSTRACT:
A secondary surveillance radar system in which monopulse processing is used to obtain angle estimation of azimuth bearing, the improvement residing in a precision method, involving a monopulse qualifier signal, for identifying the maximum unambiguous off-boresight azimuth (OBA), while ensuring reduced sensitivity to Omni channel variations; the monopulse qualifier signal is developed from coherently combining the IF limited signals derived from the Sum+JDelta and Delta+jSum signals, such that two amplitude varying signals are created, such signals bearing a direct relationship to the Sum and Difference antenna pattern ratios and being independent of antenna signal power.

REFERENCES:
patent: 4334224 (1982-06-01), Gordon
patent: 4418349 (1983-11-01), Hofgen et al.
patent: 4689623 (1987-08-01), Schwab et al.

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