摘要
目的:为解决民用机载导航、野外应急救援等领域中设备定位精度不够与可靠性低等问题,设计了一种低成本、高定位精度、高可靠性的基于多全球导航卫星系统(Global Navigation Satellite Systems,GNSS)的定位装置。方法:该定位装置采用了GPS和BDS的双系统定位结构,增加了卫星可视数,提高了定位精度;可实现北斗短报文通信功能,可保证极端天气条件下的通信;同时对电源部分进行优化,减小了电源纹波和高频噪声。结果:对其定位精度进行测试及其在晴天无遮挡和雨天有遮挡物的情况下分别对装置进行连续4 h的十组短报文通信测试,实现了2 m以内高精度定位的且在晴天和雨天时能分别达到平均95%和89%以上的成功率。结论:与传统的单系统定位装置和双频GPS定位装置相比,本设计在低成本的前提下实现了高定位精度和高可靠性。
Aims:To solve the problems of low positioning accuracy and low reliability of equipment in civil airborne navigation and field emergency rescue,a positioning device based on Global Navigation Satellite Systems(GNSS)with low cost,high positioning accuracy and high reliability was designed.Methods:The positioning device adopted a GPS and BDS dual system positioning structure,increased satellite visibility,and improved positioning accuracy.It could realize the Beidou short message communication function and ensure the communication under extreme weather conditions.At the same time,the power supply was optimized to reduce the power ripple and high frequency noise.Results:The positioning accuracy of the device was tested;and ten groups of short message communication tests were carried out on the condition that there was no shelter in sunny days and there was shelter in rainy days respectively for 4 hours.The precision positioning within 2 m was achieved;and the average success rate of 95%and 89%in sunny days and rainy days was achieved respectively.Conclusions:Compared with the traditional single-system positioning device and the dual-frequency GPS positioning device,the design device achieves high positioning accuracy and high reliability with low cost.
作者
沈峻威
叶强
文连国
SHEN Junwei;YE Qiang;WEN Lianguo(College of Information Engineering,China Jiliang University,Hangzhou 310018,China)
出处
《中国计量大学学报》
2022年第3期345-351,412,共8页
Journal of China University of Metrology
