火控雷达技术
火控雷達技術
화공뢰체기술
FIRE CONTROL RADAR TECHNOLOGY
2014年
3期
12-16
,共5页
井伟%黄金杰%姜洋%肖占牛
井偉%黃金傑%薑洋%肖佔牛
정위%황금걸%강양%초점우
数字阵列%宽带高分辨%孔径渡越%距离走动
數字陣列%寬帶高分辨%孔徑渡越%距離走動
수자진렬%관대고분변%공경도월%거리주동
digital array%wideband high range resolution%aperture fill%range migration
宽带数字阵列雷达波束控制灵活，分辨率高，是雷达的一个发展方向。但是宽带宽角扫描会引起孔径渡越效应，影响波束合成的质量。另外，分辨率的提高会导致脉冲间距离走动，严重影响脉间相参积累的效果。本文分析了孔径渡越的形成，提出针对线性调频信号的回波延时补偿方法。研究了Keystone方法进行距离走动校正。
寬帶數字陣列雷達波束控製靈活，分辨率高，是雷達的一箇髮展方嚮。但是寬帶寬角掃描會引起孔徑渡越效應，影響波束閤成的質量。另外，分辨率的提高會導緻脈遲間距離走動，嚴重影響脈間相參積纍的效果。本文分析瞭孔徑渡越的形成，提齣針對線性調頻信號的迴波延時補償方法。研究瞭Keystone方法進行距離走動校正。
관대수자진렬뢰체파속공제령활，분변솔고，시뢰체적일개발전방향。단시관대관각소묘회인기공경도월효응，영향파속합성적질량。령외，분변솔적제고회도치맥충간거리주동，엄중영향맥간상삼적루적효과。본문분석료공경도월적형성，제출침대선성조빈신호적회파연시보상방법。연구료Keystone방법진행거리주동교정。
Wideband digital array radar features high beam control agility and high range resolution, it is a develop-ment trend of future radar. However, the aperture fill phenomenon due to wideband and wide angle scanning may degrade the beam formation quality; and range migration among radar pulses caused by high range resolution will significantly impact pulse-to-pulse coherent accumulating gain. Reason of the aperture fill phenomenon is ana-lyzed and an echo delay compensation method for linear frequency modulation ( LFM) signal is proposed. Applica-tion of Keystone transformation in the linear range migration compensation is studied.
