Design And Implementation Of Aeromagnetic Data Processing System For UAV

Aeromagnetic exploration technology refers to the method of target detection that collects data by magnetic measuring equipment and combines with algorithms to determine whether the measured area contains objects causing magnetic anomalies.With the increasing maturity and intelligence of unmanned aerial vehicle(UAV)platform,UAV aeromagnetic exploration has gradually become a booming new branch of aeromagnetic exploration technology due to its advantages of strong environmental adaptability and safety.From the perspective of the process of aeromagnetic exploration,after the aerial magnetic data is collected by the UAV,it needs to transmit the data to the ground,and then the researchers need to conduct a series of complex processing,such as downsampling,turning,calibration and compensation,to get the final results.There are several problems in the current UAV aeromagnetic data processing technology:the safety of data in the process of UAV flight and data transmission cannot be guaranteed;The process of data processing is too complicated,which makes it difficult to process the data manually.The presentation of data processing results is not intuitive.In view of the above problem,this paper developed a set of integrated data encryption transmission,blood sampling points,circles,calibration and compensation,etc.All of the aeromagnetic data processing system,the system use clear intuitive images show the result of the aeromagnetic data compensation,as well as to ensure the data security for the processing of aeromagnetic data provides a powerful and convenient platform.The main research contents of this paper are as follows:First of all,from the process of UAV aeromagnetic data processing and the application environment of the system,the requirements of the system are analyzed in detail.When analyzing the functional requirements of the system,all the possible data processing processes were considered and the sub-functions in each process were sorted out.The analysis of the non-functional requirements of the system takes into account the operating environment,performance,availability,ease of use and compatibility of the system.On the basis of demand analysis,the outline design of the system is given,and the overall architecture and sequence logic of the system are described in detail.Secondly,the key technologies involved in the design and implementation of the UAV aeromagnetic data processing system are studied.Firstly,the security of data is considered,and a data encryption scheme combining symmetric encryption and asymmetric encryption is proposed.In addition,the magnetic interference model of aeromagnetic compensation and the algorithm of solving the model are deduced,which lays a solid theoretical foundation for the implementation of the system.According to the derivation of the algorithm and the flow of aeromagnetic data processing,the magnetic compensation algorithm library at the core of the system is designed.Finally,the aeromagnetic data processing system of UAV is implemented and tested.The process description of system implementation is given,and the function and performance of the system are tested.Through testing,the system has realized all the functions of aeromagnetic data processing proposed in demand analysis,and has good performance.