摘要
针对传统平行基线相关干涉仪在实际测向中精度易受系统误差影响的问题,提出了一种稳健的平行基线相关干涉仪测向方法。该方法通过增加平行基线组合数和引入索引扩展,减小系统误差对测向精度的不利影响,并采用实测样本进行相关来弱化互耦、多径效应等因素的影响。仿真结果验证了改进算法能有效提高实际测向系统的测向精度;同时,相对于标准干涉仪具有运算量上的优势,从而更加适合具有实时测向要求的测向系统使用。
Aiming at the problem that traditional parallel baseline correlative interferometer is susceptible to systematic errors in the actual direction finding system,a robust parallel baseline correlative interferometer algorithm is proposed.The proposed algorithm reduces the negative effect of the systematic error by increasing the number of parallel baseline combination and introducing index expansion.In addition,correlation with measured samples can weaken the impact of mutual coupling and multipath effect.The simulation results demonstrate that the proposed algorithm can effectively improve the direction-finding precision.Meanwhile,compared with the standard correlative interferometer,it has the advantage of lower complexity computation.Therefore,it is more suitable for the real-time direction finding system.
出处
《雷达科学与技术》
2013年第5期492-497,共6页
Radar Science and Technology
基金
国家自然科学基金(No.61101171)
关键词
平行基线
相关干涉仪
系统误差
互耦
多径效应
实测样本
parallel baselines
correlative interferometer
systematic errors
mutual coupling
multipath effect
measured sample
