摘要
相对于地基ADS-B系统,星基ADS-B系统具有覆盖范围广、成本低的优势。但星基ADS-B信号也存在信号功率低、多普勒频移较大的特点。通过对四天线卫星和目标航迹的仿真计算得出星基ADS-B信号的功率和多普勒频移,并开发出一套软件系统。该软件可实现对目标发送信号多普勒频移和功率的模拟,实现对卫星覆盖区域、背景地图和目标航迹的显示以及与下位机的数据通信。
Comparing with ground-based ADS-B, satellite-based ADS-B has the advantages of wider coverage and lower cost but the disadvantages of lower signal power and larger Doppler frequency shift. Through simulation of four-antenna satellite and target trajectory, satellite-based ADS-B signal power and its Doppler frequency shift are calculated. The corresponding software system is developed, which can simulate the Doppler frequency shift and signal power received from target, realizing display of satellite coverage, background map and target trajectory, as well as the digital communication with slave computer.
作者
胡铁乔
李阳波
张露露
HU Tieqiao;LI Yangbo;ZHANG Lulu(Intelligent Signal and Image Processing Key Lab of Tianjin,CAUC,Tianjin 300300,China)
出处
《中国民航大学学报》
CAS
2019年第3期5-10,共6页
Journal of Civil Aviation University of China
基金
国家重点研发计划项目(2016YFB0502402)
关键词
星基
功率
多普勒频移
satellite-based
power
Doppler frequency shift
