基于接收机通信和测距性能的GPS压制干扰效果分析
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摘要
为了更准确的实现对导航干扰的性能评估和功能验证,提出用等效载噪比、误码率和伪码误差3个重要指标来衡量对GPS通信和测距性能的干扰效果,并在不同干扰场景下对上述指标进行了仿真分析和对比验证。结果表明:随着干噪比升高或者在相同干噪比下随着干扰带宽的减少,通信和测距性能都会变差。即干扰效果与干扰功率成正相关,与干扰带宽成负相关。仿真结果初步验证了该评估指标的合理性。
For more accurate implementation of the performance evaluation and function verification of navigation interference, this essay used three important indicators of equivalent carrier-to-noise ratio, bit error rate and pseudo-code error to measure the interference to satellite navigation communication and ranging performance. and the above indicators were simulated and compared and verified under different interference scenarios. The results show that with the increase of jamming-to-noise ratio or under the same jamming-to-noise ratio as the interference bandwidth decreases,the communication and ranging performance will deteriorate. That is, the interference effect is positively correlated with the interference power and negatively correlated with the interference bandwidth. The simulation results preliminarily verify the rationality of the assessment indicators.
For more accurate implementation of the performance evaluation and function verification of navigation interference, this essay used three important indicators of equivalent carrier-to-noise ratio, bit error rate and pseudo-code error to measure the interference to satellite navigation communication and ranging performance. and the above indicators were simulated and compared and verified under different interference scenarios. The results show that with the increase of jamming-to-noise ratio or under the same jamming-to-noise ratio as the interference bandwidth decreases,the communication and ranging performance will deteriorate. That is, the interference effect is positively correlated with the interference power and negatively correlated with the interference bandwidth. The simulation results preliminarily verify the rationality of the assessment indicators.
引文
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[2] 王娅,宋福晓,李荣美,等.对GPS/INS接收机干扰效果评估方法分析[J].无线电工程,2011,41(8):25-27.
[3] 王渊,王娅,孙旭.卫星导航干扰效果评估指标体系研究[J].通信对抗,2013,32(2):33-37.
[4] 卢杰,张波,杨东凯,等.卫星导航接收机兼容性测试评估技术研究与实现[J].导航定位学报,2014,2(1):87-90.
[5] 李建,聂俊伟,陈华明,等.等效载噪比评估全球导航卫星系统接收机误码率的适应性分析[J].国防科技大学学报,2017,39(4):92-98.
[6] CHRISTOPHER J H,ELLIOTT D K.GPS原理与应用:第2版[M].冠艳红,译.北京:电子工业出版社,2007:173-207.
[7] 窦云,张文明,陈军.GPS接收机抗干扰性能分析[J].兵工自动化,2006,25(11):50-52.
[8] 马丽,刘飞,杨建军.平流层飞艇对GPS接收机的干扰优势[J].电光与控制,2012,19(2):37-39.
[9] 刘小波,练灿明.北斗导航终端抗干扰技术设计与实现[J].数字技术与应用,2016(6):167-168.
[10] 郭艺.GPS接收机空时抗干扰理论与实现关键技术研究[D].长沙:国防科学技术大学,2007.