Based On BeiDou’s Aircraft Landing Point Positioning And Ground Search Technology Research

With the rapid development of science and technology,positioning technology and communication technology are also changing greatly,technology is becoming more mature at the same time,the types of technology are also becoming diversified.At the same time,the recovery technology of aircraft and rocket debris is constantly changing.After nearly three decades of development,Beidou satellite navigation system has been applied to all walks of life and people’s lives,but also because of its unique characteristics of short message communication,for the recovery of aircraft and rocket debris to provide strong technical support.The positioning search system is based on Beidou Ⅱ satellite navigation system,using RNSS service,using GPS/Beidou hybrid positioning technology to locate the wreckage of the aircraft and rocket,and then through the RDSS service,the location information is communicated by text message to achieve long-distance communication,to achieve the final positioning of the landing site,to complete the recovery of debris.First of all,through the analysis of the research background and research significance of the subject,and at the same time introduced the development trend of aircraft debris recovery technology at home and abroad,and explained the future development trend and research significance of wireless communication recovery technology,by comparing the advantages and disadvantages of various positioning technology and communication technology,choose GPS/Beidou hybrid positioning technology and short message communication technology as the positioning and communication mode of the search system.The positioning search system designed in this paper is based on Beidou Ⅱ satellite navigation system,using RNSS service,using GPS/Beidou hybrid positioning technology to locate the wreckage of the aircraft and rocket,and then through the RDSS service,the location information is communicated by text message to achieve long-distance communication,to achieve the final location of the landing site,to complete the recovery of debris recovery.This paper first analyzes the background and research significance of the subject,introduces the development trend of aircraft debris recovery technology at home and abroad,and explains the future development trend and research significance of wireless communication recovery technology,and selects GPS/Beidou hybrid positioning technology and short message communication technology as the positioning and communication mode of the search system by comparing the advantages and disadvantages of various positioning technology and communication technology.The overall scheme design of the system is mainly to choose Beidou communication module as the core of positioning communication,combined with the development of the main control module,power supply management module,lithium battery voltage monitoring module and recorder communication module to complete the system construction.The system adopts GPS/Beidou hybrid positioning technology,the positioning accuracy is high,and Beidou communication module internal integration of 10W amplifier module,and through the amplifier to expand the antenna to 4,to achieve full-directional coverage in the installation plane,can provide more reliable communication.System hardware circuit design mainly includes the design of chip peripheral circuits,power supply hardware circuits,lithium battery voltage monitoring circuits,charging circuits and other analytical design.System software design includes analysis of short message communication protocol analysis and research,short message sending design,system workflow design,power supply management logic control design.The system is then modularized and machine tested,and the performance of lithium battery charging module,lithium battery voltage monitoring performance and the positioning communication performance of the whole system are tested.The test results show that the design of the positioning search system can realize the positioning communication in complex environment,and the accuracy is better than 10m,the success rate of communication is more than 95%without obvious masking,the system can work continuously for more than three hours for a long time,the work is stable,and the communication frequency is increased to 2 times/min,the reliability is higher,and the design requirements of the system scheme are met.