초록 ▼

An improved monopulse radar system wherein target return signals received by a plurality of antenna elements are corrected with correction signals derived within the system in response to pilot pulses. The improvement comprises a plurality of receiver channels, each receiver channel being coupled to

An improved monopulse radar system wherein target return signals received by a plurality of antenna elements are corrected with correction signals derived within the system in response to pilot pulses. The improvement comprises a plurality of receiver channels, each receiver channel being coupled to a single one of the plurality of antenna elements. The improvement also comprises means for generating a first set of quadrature components of video signals developed in the plurality of receiver channels in response to the pilot pulses received by the plurality of antenna elements, and for generating a second set of quadrature components of video signals developed in the plurality of receiver channels in response to return signals from the target received by the plurality of antenna elements. Digital signals representative of the first and second sets of quadrature components of video signals are generated. The digital signals representative of the second set of quadrature components of video signals are digitally corrected with the digital signals representative of the first set of quadrature components of video signals to produce digital signals representative of corrected target return signals. Signals corresponding to the angle of the target relative to the plurality of antenna elements are generated in response to the digital signals representative of corrected target return signals.

대표청구항 ▼

A radar system comprising: a plurality of independent receiver channels correspondingly coupled to a plurality of antenna elements, each one of the plurality of independent receiver channels detecting energy received by the antenna element coupled thereto independently of energy received by the othe

A radar system comprising: a plurality of independent receiver channels correspondingly coupled to a plurality of antenna elements, each one of the plurality of independent receiver channels detecting energy received by the antenna element coupled thereto independently of energy received by the other antenna elements; means for generating a set of error correction signals from energy detected in each one of the plurality of independent receiver channels in response to pilot pulse energy received by the plurality of antenna elements, and for generating a second set of signals from energy detected in each one of the plurality of independent receiver channels in response to target return signals received by the plurality of antenna elements; and means for processing the second set of signals in accordance with the set of error correction signals to produce corrected target return signals; and means for combining the corrected target return signals to generate a sum signal representative of the sum of target return signals received by at least two elements of the plurality of antenna elements and a difference signal representative of the difference of target return signals received by at least two elements of the plurality of antenna elements.