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内容:相关技术颇具军事价值,假以时日可望开发出能够骗过
雷达
的隐形装置,因此五角大厦的“国防先进研究计划署”也为这项研究提供经费。,微波与
雷达
波的波长较长,其超颖物质结构尺度可达几公分,制造难度不算高。,在军事运用方面,传统的匿踪科技是以特殊造形减少
雷达
波反射面积,并以特殊涂装材料吸收
雷达
波,以降低目标曝光的机会。,但超颖物质制成的隐形斗篷,则是要让
雷达
波“穿过”目标,无法察觉它的存在。
美国男子打造个人最重最大火箭成功发射破纪录
trample
15年9个月前
回复于
喷气推进
内容:
雷达
上可能也就是个转瞬即逝的点.....天朝的反应再快......也没那么快.....
关于飞机自动驾驶避障的一些想法
天极航天TASE
5个月29天前
独立文章
内容:二、项目概述此项目的研究内容为一种放置于飞行器中可以根据识别以及大数据处理的避鸟的飞行装置,通过
雷达
的识别以及飞行器各系统的处理来达到一个自动化避障的目的。,产品介绍该产品结合AI大数据来建立鸟类以及鸟类飞行轨迹的数据库,通过算法来使飞机能够自动避开鸟类以及障碍物,并且通过后期的AI训练来优化躲避鸟类的飞行轨迹,以及通过大数据模型与飞机上的传感
雷达
来对鸟类进行规避,第二是机载的避鸟以及避障措施,通过
雷达
以及超声波,激光
雷达
等方式来测量鸟的距离,通过esp 32 S3以及Mpu9250陀螺仪等传感器结合Madgwick算法来对飞行的姿态以及规避的路线进行规划在飞机上加装新的装置
搞到个电子管大家鉴定一下
xj198398xujing
12年3个月前
回复于
电子技术
内容:是全新的部队库存不懂电子管 看着这个个大点就给搞回来了据说是
雷达
上的备件 以为是发射管之类的那想是个闸流管 又被那厮给忽悠了不知道这个的特性和晶闸管有什么异同 比如能否在控制极加反压关断 还是必须要过零另外在求下相关参数
“奈基”史话
拔刀斋
15年4个月前
发表于
喷气推进
内容:该导弹能通过陆基
雷达
和计算机系统进行制导,不管敌机采取什么样的躲避动作,导弹都可进行准确拦截。,大力神导弹还包括许多精密
雷达
和制导系统,这使它在远程截击中更加精确、有效。 ,在综合火控区内,搜索
雷达
全天24小时值班搜索敌机。,然后导弹跟踪
雷达
(MTR)锁定,附近发射架区内的一枚奈基导弹准备发射。,目标跟踪
雷达
和导弹跟踪
雷达
都与综合火控区内的制导计算机相连。
使用航拍套件谨防干扰重要业务导致严重后果
warmonkey
11年6个月前
回复于
无线电
内容:最重要的ADS/B二次
雷达
在1030和1090M,调幅,曼彻斯特编码其次是语音通信118~135.95M,调幅,语音盲降需要108~118M导航台,干扰可能导致导航错误,相对来说最容易中招。
怎样对付路上的摄像头
叛逆·大白鼠
16年0个月前
回复于
极客DIY
内容:引用第30楼223344于2009-01-30 21:45发表的 :留言终结者做过实验,微波不行对,留言终结者做过试验,都不行的,我看了那集其实最简单的方法就是买个电子狗我家车上就是,什么
雷达
摄像头都有提醒
用货轮给军舰护航如何?
孤独的酒精灯
13年4个月前
回复于
极客DIY
内容:其实可以不用货轮之类的东西,直接拖一堆天然或人造冰山在周围……冰山的好处在于:只要有制冷设备和足够的能量就可以不停补充,而且只要不被完全击碎就不会失去防御能力,能持续漂浮;能任意塑形再加个壳用以欺骗
雷达
或光学侦查
某些天线的问题[3分]
全能杀手
17年6个月前
回复于
电子技术
内容:我只在某些书上找到了部分元件的故障率.试管天线关键是高介电常数低损耗且稳定(在使用温度下不会发生相变等问题)的介质.其实我想现在应该有和它原理一样的天线.我所在的城市比较小,新华书店里没有什么特别专业的书.
雷达
系列的比较具体,,但是都是为
雷达
设计的天线.所以也找到不到什么好书 孤陋寡闻 贻笑大方了 ~~
微软前高管改行造激光灭蚊器
ljq_cat
14年0个月前
回复于
极客DIY
内容:当然这套系统如果是真的话,意义很大,小到灭蚊,大到防空,如果系统成熟甚至可以替代密集阵守门员这类系统,再扩展一点用途甚至反导,反卫星,激光在的空气中的微粒和水汽会严重干扰其能量和射程它是如何解决的,用做激光
雷达
也不错
古董级别的8毫米微波信号源和频率表
fd422
8年5个月前
发表于
跳蚤市场
内容:8毫米
雷达
综合测试仪拆下,波导和喇叭口都是铜质镀银刷漆,波长表本体铜质镀金很沉,调谐千分尺头精度0.002mm。
有没有近场定位、测距的好方法?
香皂火箭q
10年4个月前
回复于
电子技术
内容:无线电模块 一个发射一个接受 接收时的
雷达
两面装铝箔,聚集信号 下面用单片机控制步进电机,一度一度的转 先赚一度,再转一度 然后可以扩大信号 输给adda芯片 然后单片机处理看看究竟是那一度信号最强,
回 20楼(10班陈大葱22号) 的帖子
布布卡
11年4个月前
回复于
电子技术
内容:你在做激光
雷达
?
声音大些的超声波音箱,市场上为何没有卖的?找到的几款声音都太小
3DA502
7年0个月前
回复于
电子技术
内容:看网上搜到的产品都是倒车
雷达
的探头拼装的,这种探头其实也挺复杂的,多少年优化下来的空气耦合腔体,频率也是最适合空气的传输频率,太高频的声波根本传不远,如果声音不大,可能声音本来就不大这种简单的东西,可以试试加大驱动电压
大家来讨论下太空战舰对轰用什么武器好。
rudolf
9年0个月前
回复于
电磁炮
内容:就像现在的战舰,都有预警
雷达
,什么东西提前几百千米就发现了。
动态滑翔—— 245m/s 的无动力滑翔机
三水合番
1年10个月前
发表于
航空技术
内容:视频里的人用
雷达
测速枪测到了548mph的速度,也就是245m/s。,里面提到了很多有趣的事情,比如高速下机翼颤振导致飞机凌空解体;最高速度纪录曾经一度停滞(因为他们买不到能测更高速度的
雷达
枪);120G以上的过载(说“以上”是因为加速度计超量程了)。
有没有人玩fpga的?
量子隧道
12年7个月前
回复于
电子技术
内容:FPGA适合进行高速处理工作,如通信网络设备,视频编解码,
雷达
信息处理之类的。
超声波测距~~~~~~~
thinker
9年9个月前
回复于
极客DIY
内容:给个小建议:用两个超声波模块,两个超声波发射方向90度放置,把一个当X的坐标,一个当Y坐标, 这样当手指放到两个模块发射方向上,可以得到XY坐标.实现手式输入 以前看过超声波做的
雷达
帖子,不知道到底可行不
室外公共场合采用微波取暖!
拔刀斋
13年9个月前
回复于
极客DIY
内容::以前当兵时候近距离被
雷达
照射身体内部会有一种暖洋洋很舒服的感觉。,但是像
雷达
一样发射可控频率和重复率的让微波能量照射人身体,不受衣物阻拦。
少见的30KV进口高频高压瓷介电容
adj1202
8年9个月前
回复于
跳蚤市场
内容:引用 心旅过客:我买过一种AC20KV 2000PF的,稳定性很差, 买了很后悔,说是云母电容,根本就不是,砸开来看,法国LLC Un20kV~ ,2000pF HTD 这电容是价值几百万的
雷达
设备上拆的
美科学家发现月球北极含有6亿吨水冰(图)
玄明
14年11个月前
发表于
极客DIY
内容:环球网实习记者冯丽报道,法新社3月2日消息美国宇航局科学家3月1日说,美国
雷达
发现,月球北极40多个陨石坑含有6亿吨水冰。,据报道,美国航天局Mini-SAR
雷达
发现,月球北极有40多个大小不等(大约1.6至15公里)的陨石坑,每个陨石坑都充满水冰。
关于镀金电路板的电化腐蚀问题
sj055xy
12年11个月前
回复于
电子技术
内容:我以前做过S波段
雷达
瞬时测频接收机,4G测量128dB隔离,C波段高隔离数控电调,8G隔离128dB。
一种新型的灭蚊设备
lzj1116
16年6个月前
回复于
极客DIY
内容:可以用超声波探测,利用多普勒
雷达
的原理探测飞行的蚊子更准确,可以根据飞虫的飞行特点在软件上加以识别,不光蚊子,蛾子之类的也给打下来,攻击手段可以用多束激光聚焦,这样除了焦点,别处都不能形成高温,而且应该精确计算能量
随身自行车道的改进?
lp91125
15年4个月前
回复于
极客DIY
内容:而且我们貌似也没必要把成本提这么高啊,这个实用性还不及一个闪光灯,还兼具照明作用另外,如果是为了安全考虑,不如采取其他的途径(光以外的),比如把汽车倒车
雷达
前置,功率加大,并常开(或随灯自开),即使雾太大或是光太暗
有没有不会撞车的车?
jrcsh
15年9个月前
回复于
极客DIY
内容:引用第3楼AnthraX于2009-05-07 22:59发表的 :技术来说现在已经有了,奔驰就在做这个实验,其实原理很简单,一个激光
雷达
,探测前方的障碍物,如果以目前的车速和前方的距离过于危险的时候就会自动减速
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