火控雷达技术
火控雷達技術
화공뢰체기술
FIRE CONTROL RADAR TECHNOLOGY
2014年
2期
99-103
,共5页
天线近场测试方法%幅相误差%波束形成%天线校准%闭环校准
天線近場測試方法%幅相誤差%波束形成%天線校準%閉環校準
천선근장측시방법%폭상오차%파속형성%천선교준%폐배교준
antenna near field testing method%amplitude-phase error%beam-forming%antenna calibration%closed-loop calibration
大型相控阵天线阵列由于天线口径很大，给天线远场测试带来很多困难，天线近场测试方法可以有效解决这类问题。本文在实际工程中利用天线近场测试方法对大型天线阵列的幅相误差进行了测试及校准。试验结果表明，此方法可以用于评估阵列天线的一致性。波束形成后，相对于接收机闭环校准，天线误差校准可以明显降低旁瓣，并且测角偏差明显减少，在短波低频段表现尤为突出。
大型相控陣天線陣列由于天線口徑很大，給天線遠場測試帶來很多睏難，天線近場測試方法可以有效解決這類問題。本文在實際工程中利用天線近場測試方法對大型天線陣列的幅相誤差進行瞭測試及校準。試驗結果錶明，此方法可以用于評估陣列天線的一緻性。波束形成後，相對于接收機閉環校準，天線誤差校準可以明顯降低徬瓣，併且測角偏差明顯減少，在短波低頻段錶現尤為突齣。
대형상공진천선진렬유우천선구경흔대，급천선원장측시대래흔다곤난，천선근장측시방법가이유효해결저류문제。본문재실제공정중이용천선근장측시방법대대형천선진렬적폭상오차진행료측시급교준。시험결과표명，차방법가이용우평고진렬천선적일치성。파속형성후，상대우접수궤폐배교준，천선오차교준가이명현강저방판，병차측각편차명현감소，재단파저빈단표현우위돌출。
Testing antenna in far field is much more difficulty since its big antenna caliber of large scale phased ar-ray antenna, and this can be effectively solved by using method of testing antenna in near field. The amplitude and phase error on large scale antenna array is tested and calibrated by using method of testing antenna in near fields in practical engineering application. The test results show that this method can be used to evaluate amplitude and phase consistency of array antenna. In respect to closed-loop calibration of the receiver, the antenna error calibra-tion can distinctly reduce side lobes after beam-forming, and the angle measurement deviation decreases obvious-ly, especially in the low frequency band of shortwave.
