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- At last,an example of IF unit of radar echo generator system based on DDS is presented.This signal unit can generate radar IF echoes including general pulse,LFM,NLFM,PSK. 最后给出了一个基于DDS的雷达多目标模拟系统中频单元的设计实例,该单元可以灵活生成包括常规脉冲、线性调频、非线性调频、相位编码在内的雷达中频回波信号,为被试雷达提供较为全面的测试环境。
- radar IF echo 雷达中频回波
- A high performance digital IF radar receiver which uses IF echo and COHO joint process algorithm, field sampling, field processing and remote transmission is introduced. Its performance can meet the requirements of modern high performance radar system. 采用中频回波和中频相参信号联合相干处理 ,现场采样 ,现场处理 ,远程传输的体系结构实现了高性能数字中频雷达接收机 ,其性能可以满足现代高性能雷达系统的需要
- A design and implementation method of ISAR target IF echo is introduced.At first, the ISAR IF echo characteristics are analyzed, taking a stationary point-target as an example. 摘要介绍了一种ISAR目标中频回波模拟器的设计实现方法:首先以固定点目标为例,分析了ISAR目标的中频回波信号特点;
- End If End If echo! 执行完毕!
- You can do it this way if you care to. 如果你乐意的话,可以这样做。
- They picked up the yacht on their radar screen. 他们在雷达屏上看到了那艘游艇。
- A simple test will show if this is real gold. 简单的试验就能证明这是否是真金。
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久,就会发酵。
- If I had my way, I'd go to the movies tonight. 假如我做得到的话,我今晚会去看电影。
- Such kind of radar echo is called Second Trip Echo. 这些雷达回波被称为二次传输回波。
- If we all muck in we'll soon finish the job. 如果我们大家都动手,一会儿就可以干完这件事。
- If you go to a private hospital you must pay. 如果你去一家私立医院就诊,你得付费。
- We should practice economy even if we are rich. 即使我们富裕了也仍应该厉行节约。
- At 9:25 am, the alma mater began to be played from the bell tower and the strains soon spread throughout the campus, as if echoing Cornell's first commencement ceremony in 1869. 9点25分,钟楼上响起了大学校歌,音乐很快传遍了整个校园,它仿佛回应着康奈尔大学1869年的第一次毕业典礼。
- The radar scanned the sky for enemy planes. 雷达密切监视天空,搜索敌机。
- At 9:25 am, the alma mater began to be played from the bell tower and the strains soon spread throughout the campus , as if echoing Cornell's first commencement ceremony in 1869. 9点25分,钟楼上响起了大学校歌,音乐很快传遍了整个校园,它仿佛回应着康奈尔大学1869年的第一次毕业典礼。
- Do you mind if I draw up the blinds? 我卷起窗帘你不反对吧?
- The watchtower followed the aircraft by radar. 瞭望塔通过雷达追踪这架飞机的行踪。
- A circuit that needs to use an echo trap if the circuit is used alone. 一种电路,如果单独使用它,则需要使用回波抑制设备。