A RADIO RECEIVER USED ON AN AIRCRAFT TO RECEIVE SIGNALS FROM UP TO SIXTEEN DEPLOYED SONOBUOYS. SONABUOYS ARE ELECTRO-ACCOUSTIC SENSORS THAT PICK UP SOUND WAVES IN WATER AND RELAY THIS INFORMATION VIA A RADIO SIGNAL TO THE RECEIVER. THE RECEIVER AMPLIFIES AND DEMODULATES THE SIGNALS ON SELECTED CHANNELS IN ORDER TO PROVIDE THE BASEBAND MODULATION INFORMATION TO EXTERNAL ACCOUSTIC SIGNAL PROCESSING EQUIPMENT. IT WORKS IN CONJUNCTION WITH AN EXTERNAL DIRECTIONAL ANTENNA SYSTEM TO MEASURE THE ANGLE OF ARRIVAL FROM THE SIGNALS RECEIVED, RELATIVE TO THE LONGITUDINAL AXIS OF THE AIRCRAFT. USING DATA OBTAINED FROM OTHER SYSTEMS IN THE AIRCRAFT THE SVR CALCULATES THE GROUND STABILIZED POSITION OF THE SELECTED EMITTER. APPROXIMATE DIMENSIONS OF RECEIVER 485.8 W X 363.5 D X 247.9 H MM. WEIGHT 23.4 KG.

CLASSIFICATION IS DETERMINED ACCORDING TO GIRS 1 AND 6. CN 852691 80 FOR OTHER RADIO NAVIGATIONAL AID APPARATUS.