摘要
随着航空航天领域对高精度定位技术的需求不断增加,针对大型飞行试验中数据存储器无法快速回收的问题,设计了一种基于卫星定位和北斗短报文技术的定位系统。该系统在飞行器分离前启动,通过北斗BDS模块实时获取位置信息,分离后则利用北斗短报文向地面终端发送信号。天线的设计对信号的收发能力有很大的影响,通过对天线采用微带叠层结构和双重矩形斜角切割的贴片设计,实现双频圆极化辐射,具备良好的顶点增益、低仰角增益和优异的频段隔离性能,确保北斗信号的传输可靠性,通过试验验证,定位误差小于5m,短报文通信的最大丢包率为4.41%,均符合设计要求。
With the increasing demand for high-precision positioning technology in the aerospace field,a positioning system based on satellite positioning and Beidou short message technology was designed to solve the problem that the data memory could not be quickly recovered in large-scale flight tests.The system is started before the aircraft is separated,and the position information is obtained in real time through the Beidou BDS module,and after separation,the Beidou short message is used to send signals to the ground terminal.The design of the antenna has a great impact on the ability to transmit and receive the signal,through the patch design of the antenna using microstrip laminated structure and double rectangular bevel cutting,the dual-frequency circular polarization radiation is realized,with good vertex gain,low elevation gain and excellent band isolation performance,to ensure the transmission reliability of the Beidou signal,through the test verification,the positioning error is less than 5 meters,and the maximum packet loss rate of short message communication is 4.41%,which meets the design requirements.
作者
赵志雄
曹睿星
张会新
Zhao Zhixiong;Cao Ruixing;Zhang Huixin(Key Laboratory of Micro/Nano Devices and Systems,Ministry of Education,North University of China,Taiyuan 030051,China)
出处
《国外电子测量技术》
2024年第10期102-109,共8页
Foreign Electronic Measurement Technology
关键词
飞行器
残骸搜寻
北斗
短报文
定位系统
微带天线
aerocraft
wreckage search
Beidou
short messages
positioning system
microstrip antennas
