Simultaneous Dual Polarization Radar System with Pedestal Mounted Receiver

An apparatus for simultaneous transmission of H- and V- channels in a dual polarized weather radar, the apparatus comprising

• means for directing a transmitter (1) output in waveguide through azimuth rotary joint (9) to one or both of duplexers (3) by polarizer (2) that splits the signal into horizontal (H) and vertical (V) components.
• means for directing from the duplexers the H- and V-components signals through two separate single elevation rotary joints (8) to orthomode feed (7) and to atmosphere by dish reflector (6),
• means for separating on reception the H- and V-components by the orthomode feed (7) and directing through elevation rotary joints (8) by duplexers (3) to H-channel and V-channel (4) of radar receiver and processed further by signal processor DSP (5).
• characterized in that
• the duplexers (3), polarizer (2), receivers (4) and DSP (5) are located above the azimuth rotary joint but below elevation rotary joints (8), and
• a low power calibration signal on the radar's operating frequency is locked to the master oscillator of the radar system is taken from the signal source (10) and split into couplers (11) above the elevation rotary joints (8) and fed into receivers (4).