Ground Target Detection System Based On Ultrasound And SAR Theory

Spatial location technology refers to the technology that uses spatial information and analyzes it to obtain point or area spatial information.At present,the spatial location technology mostly focuses on light and electromagnetic waves.However,this paper focuses on location analysis based on ultrasound.The bats,dolphins and other organisms used their own "biological sonars" to analyze the information of surrounding space.People began to study and analyze the way these creatures locate in space from the 1870s.In the late 19th century and early 20th century,the method of ultrasonic generation of piezoeletric materials was found to make the supersonic technology develop rapidly.The study of ultrasonic spatial positioning technology is a powerful supplement to the spatial positioning technology.Some scenes such as night,fog,seabed,fire scene etc,that not suitable for spatial positioning techniques such as light and electromagnetic waves etc,can use ultrasound localization.We can use ultrasound spatial location technology to effectively spatially separate these scenes.The paper proposes a method for dynamic positioning of ultrasound,combining digital processing of SAR with ultrasound location,and combining the Gaussian distribution and K-means algorithm to efficiently locate the spatial information.Different from the current ultrasound positioning,this paper describes a dynamic positioning,that is,the acquisition system will analyze the spatial information in the movement,rather than the static ultrasonic positioning algorithm such as Music algorithm the fixed reception source static ultrasonic positioning algorithm.The use of dynamic positioning can be used in many fields,such as positioning analysis of surrounding space objects in unmanned vehicle.The paper mainly validates and analyzes the processing methods used in this paper and the simulation of dynamic bat positioning through simulation,physical construction,physical experiments,and error analysis.Firstly,whether the ultrasonic signal can adapt to SAR algorithm for simulation and positioning analysis through Matlab.Second,use the STM32 chip as the master control chip to build an ultrasonic mobile acquisition platform and collect spatial information through the platform.Then the collected information was processed by Matlab and analyzed to complete the target experiment through multiple experiments,the accuracy of the target positioning was analyzed.When spatial information analysis is performed,location analysis by light,electromagnetic waves,etc.has certain limitations.The dynamic super-localization proposed in this paper combined with the algorithm in SAR imaging principle has a certain role in the analysis of target location in space.It can be used as an effective supplement for light and electromagnetic wave positioning,and provides reference for spatial information analysis and research.Through multiple physical experiments,it provides an effective reference for bat flight positioning algorithms.In this paper,by analyzing the dynamic ultrasonic positioning,it provides another feasibility for some scenes that can not use light and electromagnetic waves to locate.It provides a reference for researchers studying the biological admittance system.In this paper,the experiment of ground target detection provides a certain reference for obstacle avoidance in unfavorable environment.