active adj. 1.活动的,有活动力的;【生物学】活性的;【电学】有功的;【无线电】有源的;【物理学】放射性的。 2.有生气的,活泼的,灵敏的,敏捷的;主动的,能动的,积极的;有力的,勤勉的;【医学】有特效的。 3.现行的,活动中的;【军事】现役的。 an active demand 畅销。 an active volcano 活火山。 The market is active. 市场活跃。 active measures 积极手段。 on active service 【军事】现役,现役中的。 take an active part [interest] in 积极参加。 adv. -ly 活跃地;积极地,能动地;【语法】主动地。 n. -ness 活跃,积极性。
be active in 对…很积极; 活跃于; 积极参加; 积极于; 在......里活跃; 在……活跃
radar n. 〔美国〕【无线电】 〔radio detecting and ranging 之略〕 雷达,无线电探测器 (=〔英国〕 radiolocator)。 air search radar 防空[空中搜索]雷达。 air surface vessel radar 飞机用水面舰船搜索雷达。 beam-transmitter radar 定向瞄准雷达。 missile radar 弹载雷达;跟踪导[飞]弹的雷达。 long-range radar 远程雷达。 radar control 雷达控制。 radar installation 雷达装置。 laser radar 激光[镭射]雷达。 a radar set 雷达装置。 below [beneath] the radar 不引人注意,在视线之外。 ★ radar 是不可数名词。
A improved method of quot; ghost quot; cancellation in active radar network location 有源雷达组网目标定位中去除虚假目标的改进方法
Damaging effectiveness evaluation of an unnamed active radar terminally guided missile against target 某型主动雷达末制导导弹毁伤目标效能评估
The mica is available in two variants , the active radar - guided mica em and passive infra - red ( ir ) - homing mica ir 米卡导弹有两种型号,即主动雷达制导型的米卡em和被动红外制导的米卡ir 。
In the methods of resisting arm for active radars , fitting the bait system for them is the effective and feasible one 摘要在现役雷达抗反辐射导弹的各种措施中,为雷达配置诱饵是较有效、可行的一种。
The astra remains an intriguing project with several unanswered questions surrounding it , not the least of which is where india has gained access to the sensitive active radar seeker technology that the missile requires 阿斯特拉是一个令人感兴趣的项目,许多没有答案的问题围绕着它,而不仅仅是印度从哪里获取了研制这种导弹所必需的灵敏的主动雷达引导头技术这样一个问题。
In this paper . the question of compound guidance about mid - long range air - to - air missle to be considered . the main contributions are as follows : first , two midcourse guidance laws are given . that is optimally predictable pn micourse guidance , which is suitable for middle range missle , and singularly perturbed midcourse guidance . which is suitable for long range missle guidance ; then two terminal guidance laws are given . that is variable structure guidance , which is suitable for passive radar guidance . and optimal guidance which is suitable for active radar guidance ; and then the error sourses of hand - off are researched , the hand - off law is given at the time ; fmally , the midcourse guidance laws and terminal guidance laws are tested by simulation , and the whole trajectory simulation are given through hand - off law , and the results are satisfied 主要工作如下:首先研究了用于中远程空空导弹复合制导的两种中制导律,即用于中程导弹的最优预测比例导引中制导律和用于远程导弹的奇异摄动中制导律,它们均有很好的中制导性能,能够满足中末制导的交班要求;接着研究了两种末制导律,即用于被动雷达末制导的变结构制导律和用于主动雷达导引头的最优末制导律,均适用于复合制导末制导段;然后分析了中末制导的交班误差源,讨论了用于复合制导的交接律;最后通过仿真,验证了提出的中制导律和末制导律,结合提出的交接规律,在不同的情况下对中末制导段弹道进行了仿真验证,结果证明文中提到的中末制导律能够达到性能指标要求。