Research On Ultrasonic Circumferential Scanning Detection Technology For Regional Blockade Ammunition

Area denial submunition is common means for the swarm attack of anti-tank,which can realize quick deploy within long distance and form self-organizing network to retard the mechanized troops of the opposite by the means of airborne dispenser,guidance rocket and gun launching.The detection system of area denial submunition is generally the compound detection system,which is sound/infrared compound system and sound/millimeter waver compound system,but there are few researches on the sound/ultrasonic compound detection system.The sound compound-detection model takes the passive sound signal as the warning and recognizes the object direction and distance with the ultrasonic ranging technology.The research content of this Paper is based on the circular scanning and detection technology of ultrasonic active defense of networked area denial submunition system,which could realize the detection of large visual field around the submunition node.The program of circular scanning and detection with single path ultrasonic wave is established and the key problems and main technology of circular scanning and detection system are researched.Firstly,this Paper conducts the research on such main technologies as passive sound detection and ultrasonic wave detection of the compound detection of area denial submunition;based on analyzing the ultrasonic ranging algorithm,the echo signal is handled by applying the cross-correlation algorithm analysis and the overall program of ultrasonic circular scanning and detection system is determined.Secondly,the modal analysis is conducted for the ordinary ultrasonic wave transducer and the frequency-domain characteristics analysis is conducted for the sound field to determine the optimal working frequency of transducer;the enhanced ultrasonic wave transducer is designed,acquiring stronger sound pressure of sound field and father ranging scope.Based on the enhanced ultrasonic wave transducer,the ultrasonic circular detection model with the single transmitter to single receiver is established,determining the signal pulse frequency and the optimal matching parameter of motor scanning rotational speed.Finally,the mechanism,software and hardware system of circuit of ultrasonic circular scanning and detection system is designed and the pricipled sample machine is made for experiment.The experiment demonstrates the correctness of structural design of enhanced ultrasonic transducer and the mathematic model of scanning and detection.