摘要
由于飞行高度高、覆盖面积广、部署速度快等原因，空基及近空间飞行器成为卫星导航增强平台的优选，空基及近空间导航增强平台搭载伪卫星可以实现区域功率增强抗干扰。为了克服远近效应，空基及近空间伪卫星通常采用TDMA信号体制。本文通过与类卫星信号相比较，分析了TDMA信号抗干扰能力提升效果。理论分析结果表明：伪卫星TDMA信号抗干扰能力提升效果为13．7dB-19．4dB。
Taking advantages of high flight height, large coverage and rapid deployment, air - based and near space air- crafts become the excellent satellite navigation augmentation platforms. When installed with pseudolite, the platforms can realize regional power augmentation and anti -jamming. In order to overcome the near- far effect problem, the TDMA signals are usual- ly used in the air - based and near space pseudolite signal design. In this paper, the anti - jamming performance improvement of TDMA pseudolite signal is analyzed by comparing with the satellite - like signal, and the theoretical analysis results show that the anti -jamming performance TDMA pseudolite signal is improved by 13.7dB- 19.4dB.
出处
《测绘科学与工程》
2014年第5期75-78,共4页
Geomatics Science and Engineering
关键词
伪卫星
近空间
抗干扰
增强
pseudolite
near space
anti-jamming
augmentation
