一种窄波束天线数引偏差修正方法的分析与应用  

A Digital Guidance Deviation Correction Method for Narrow-Beam Antennas and Its Application

作　　者：宋彦智 薛晓马 贺红兵 黄金婷 黄敏[1] SONG Yanzhi;XUE Xiaoma;HE Hongbing;HUANG Jinting;HUANG Min(Unit 63726 of PLA,Yinchuan 750004,Ningxia;China Xi'an Satellite Control Center,Xi'an 710015)

机构地区：[1]中国人民解放军63726部队,银川750004 [2]西安卫星测控中心,西安710015

出　　处：《火控雷达技术》2023年第4期63-68,共6页Fire Control Radar Technology

摘　　要：针对靶场和航天测控任务中大口径、高频段类型的窄波束天线在数引方式下存在引导偏差大的特点,从误差修正的基本模型和原理出发,分析了目标捕获时偏差修正的必要性,提出了一种通过实时修正设备轴系误差、大气电波折射误差来减小数字引导偏差的方法,并结合测控任务实践给出了捕获偏差修正的时机与场合。经数据对比分析及验证,在俯仰方向上修正后的数字引导偏差由最大0.19°减小至0.05°,大幅提高了窄波束天线在数引方式下的捕获能力,该修正方法可在靶场和航天测控领域推广应用。To reduce the large guidance deviation of the narrow beam antennas with large aperture and high frequency under the digital guidance mode,which is always seen in range and space TT&C missions,the necessity of deviation correction during target capture is analyzed before a method is proposed to reduce such guidance deviation through the real-time correction of axis system error and atmospheric radio wave refraction error according to the basic model and principle of error correction.In addition,the timing of capture deviation correction is given based on TT&C practice.Data comparison and analysis results show that the digital guidance deviation in elevation is reduced from 0.19°to 0.05°after correction,which significantly improves the capture capability of the narrow-beam antennas in the digital guidance mode.The proposed correction method can be applied to range and space TT&C scenarios.

关 键 词：窄波束天线 大气折射 轴系误差 数字引导 引导偏差 KA频段 

分 类 号：TN953.5[电子电信—信号与信息处理]