基于北斗导航的飞行器轨迹追踪装置

Aircraft Trajectory Tracking Device Based on Beidou Navigation

摘要: 本设计为一款基于北斗模块与4G通讯模组的飞行器轨迹追踪装置。本设计主要由北斗模块、4G通讯模块、以及控制主板、电池包组成。主控板通过与北斗模块进行串口通信，接收到与定位有关的数据，并使用了扩展卡尔曼滤波算法来提高系统定位精度。获取到定位数据后通过4G通信模块将解析完成后的定位数据发送到服务器端口，从而生成飞行器当前实时的飞行轨迹及飞行状态数据，实现对飞行器飞行状况的实时追踪。其中，为了增加装置的可靠性，本装置设置了4G信号强度实时监测，在高空中4G信号微弱时，系统将切换为北斗短报文通信方式继续向服务器端指挥机继续发送当前定位数据，增强了通信的可靠性。与此同时，为了解决北斗卡通信频度上限的问题，本装置设计了四张北斗卡轮流切换发送报文的机制，提高了通信频度，确保了定位数据的连续性，提升了本装置的通信性能。

Abstract: This design is an aircraft trajectory tracking device based on Beidou module and 4G communication module. This design is mainly composed of Beidou module, 4G communication module, control motherboard and battery pack. The main control board receives the data related to positioning through serial communication with Beidou module. The extended Kalman filter algorithm is used to improve the positioning accuracy of the system. After obtaining the positioning data, the 4G communication module sends the parsed positioning data to the server port, so as to generate the current real-time flight trajectory and flight status data of the aircraft, and realize the real-time tracking of the flight status of the aircraft. Among them, in order to increase the reliability of the device, the device is equipped with real-time monitoring of 4G signal strength. When the 4G signal is weak at high altitude, the system will switch to Beidou short message communication mode and continue to send the current positioning data to the server-side command aircraft, which enhances the reliability of communication. At the same time, in order to solve the problem of the upper limit of the communication frequency of the Beidou card, the device designs a mechanism for four Beidou cards to switch and send messages in turn, which improves the communication frequency, ensures the continuity of the positioning data, and improves the communication performance of the device.