摘要
幅差法定位是针对静止轨道卫星入站干扰源定位的有效方法之一,该方法基于同星多个波束间的干噪比差值进行定位,定位的关键在于同星干噪比差值的获取以及覆盖区域内G/T差值参考数据的准确度。但在实际应用中,由于GEO卫星的实际倾角并非为0,且当该倾角大到一定程度时会出现定位结果随时间和干扰发射频率波动等现象。通过多地长时间干扰试验数据积累和数据处理,从多角度分析了定位结果异常波动的原因,并提出了相应的可能解决措施,为幅差法干扰定位精度提升提供了下一步研究思路。
Amplitude difference interference location method is an effective method to locate the interference source against the geostationary satellite,in which the difference of jamming-to-noise ratio between two beams is used to locate the unknown uplink interference.In this location,acquisition of the jamming-to-noise ratio between two beams of the same satellite and the accuracy of the G/T difference distribution are the key issues.However,in actual situation, the inclination of the GE0 satellite is not zero.And if this inclination is large enough, other positioning error fluctuations will be introduced with time and interference frequency.In this paper, the causes of abnormal fluctuations of the positioning results are analyzed based on data accumulation and data processing of interferences in several different areas. And corresponding possible solutions are put forward, which provides the next step for the performance improvement of amplitude difference interference localization.
作者
刘安斐
吕鑫
刘京
窦晓晶
LIU An-fei LU Xin LIU Jing DOU Xiao-jing(Beijing Satellite Navigation Center, Beifing 100094, China)
出处
《无线电工程》
2017年第9期21-26,共6页
Radio Engineering
基金
国家部委级基金资助项目
关键词
干扰源定位
G/T差值
动态参考数据库
幅差法
interference location
G/T difference
dynamic reference database
amplitude difference interference location method
