摘要
研究了对流层超视距无源测向系统中方位向散射信号的特性,通过定义对流层散射方位向功率因子,分析不同参数对因子的影响,得出了接收信号功率中值与接收天线方位向波束宽度的关系.重点研究了系统对目标测向存在的测向误差和测向虚像模糊问题,发现存在与接收天线无关的最小测向误差和最小虚像模糊角,分析了造成这些问题的原因,并推导出了最小测向误差和最小虚像模糊角与目标天线和距离等的关系.
The characteristics of azimuth scattering signal in tropospheric passive direction finding system is researched.By defining the power factor of tropospheric scattering azimuth and analyzing the effects that different parameters make on the factors,the relationship between the received signal power median value and receiving antenna azimuth beam width was obtained.Focusing on the orientation precision and orientation fuzzy problems during the measurement of the target,we found it existed the minimum direction finding error and minimum fuzzy angle independent from the antenna,then analyzed the reasons of these problems,and derived to the relationship between the minimum direction finding error or minimum fuzzy angle,and target antenna or distance,etc.
出处
《电波科学学报》
EI
CSCD
北大核心
2015年第3期443-448,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金(11173068
11303094)
关键词
对流层散射
无源测向
精度
虚像模糊
分集
tropospheric scatter
passive detection
precision
fuzzy
diversity
