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
General specification for active sonar of naval ship 舰艇用回声声呐通用规范
Denoising processing of active sonar echo data based on matlab and wavelet transform 和小波变换的主动声纳回波数据消噪处理
Study on double - threshold tracks correlation algorithm for active sonar to passive sonar 主被动声呐多目标航迹关联的双门限算法研究
The main task of it is to measure the working parameter of active sonar and track the target 其主要任务是侦察目标主动声呐的工作参数,对目标实施跟踪。
Detecting sonar pulse transmitted by an active sonar , it is called " sonar pulse detection " 声呐脉冲侦察是利用目标主动声呐发射的脉冲信号来探测目标的技术。
A new adaptive data reduction algorithm is presented to display large amounts of data on the computer screen of active sonar system 摘要本文讨论了主动声纳系统中主动检测结果的数据显示问题。
Some techniques about adaptive line enhancer ( ale ) are introduced in this thesis , which are used in active sonar to improve its detection performance 本论文着重对自适应线谱增强器( ale )应用于主动声纳信号检测的问题进行研究,以期改善主动声纳的检测性能。
Oceanic reverberation , the fiercest interference to the active sonar , should be suppressed by the sonar signal processing . this is an important problem that has not been solved successfully 克服混响干扰一直是主动声纳信号处理理论和实践的一个重要课题,至今还没有得到完满解决。
Detecting sonar pulse transmitted by active sonar , it is called " sonar pulse detection " . the main task of it is to measure the working parameter of active sonar and track the target 声呐脉冲侦察的主要任务是侦察目标主动声呐的工作参数,对目标实施跟踪,是利用目标主动声呐发射的脉冲信号来探测目标的被动测距技术。
The hardware and software of the ale for a ship - bome active sonar are designed , tested , and documented in detail . lt has been verified that the design along with the techniques adopted is correct 通过样机的研制和对部队实际应用的主动声纳加装自适应线谱增强器,验证了设计结果的正确性,同时也产生了重要的军事效益。