Over-the-horizon radar

How a skywave OTH radar works: A powerful shortwave signal from a large transmitting antenna (left) reaches a target beyond the horizon by reflecting off the ionosphere, and the echo signal from the target (right) returns to the receiving antenna by the same route.

OTH-B coverage from stations in Maine and Oregon.

Over-the-horizon radar, or OTH (sometimes called beyond the horizon, or BTH), is a type of radar system with the ability to detect targets at very long ranges, typically hundreds to thousands of kilometres, beyond the radar horizon, which is the distance limit for ordinary radar. Several OTH radar systems were deployed starting in the 1950s and 1960s as part of early warning radar systems, but these have generally been replaced by airborne early warning systems instead. OTH radars have recently been making a comeback, as the need for accurate long-range tracking becomes less important with the ending of the Cold War, and less-expensive ground based radars are once again being considered for roles such as maritime reconnaissance and drug enforcement.

词汇	ROTHR
分类	英语词汇英语翻译词典
释义	ROTHR 英语百科 Over-the-horizon radar Over-the-horizon radar, or OTH (sometimes called beyond the horizon, or BTH), is a type of radar system with the ability to detect targets at very long ranges, typically hundreds to thousands of kilometres, beyond the radar horizon, which is the distance limit for ordinary radar. Several OTH radar systems were deployed starting in the 1950s and 1960s as part of early warning radar systems, but these have generally been replaced by airborne early warning systems instead. OTH radars have recently been making a comeback, as the need for accurate long-range tracking becomes less important with the ending of the Cold War, and less-expensive ground based radars are once again being considered for roles such as maritime reconnaissance and drug enforcement.
随便看	somonde somone Somong Somoni somono somonopathy Somon Plum Seed Somontano Somontin somoothing board Somophyllin Somophyllin T SomophyllinT somopsychogenital precocity somopsychosis Somos Somosierra Somosierra, Puerto de somosierras Somosomo Somosomo Str. somosphere So mote it be Somotillo Somoto 散文全文情感的答题思路是什么意思乡村情感文案视频下载是什么意思张学友情书雪狼湖是什么意思儿子情感短视频说说文案是什么意思玫瑰情书谢谢大家是什么意思全球高考情书小说是什么意思关于男人情感散文名篇摘抄是什么意思印记情感文案是什么意思生日的心情感悟的句子是什么意思福建地区疫情感悟句子摘抄是什么意思偶遇情感文案简短有趣短句是什么意思浪漫情感文案语录图片是什么意思智慧情感文案语录短句是什么意思丹东疫情感受感悟句子简短是什么意思歪头女孩的情感语录大全是什么意思如何用电话挽回爱情（电话挽回爱情的有效方法和技巧）电话拉入黑名单如何挽回？（实用技巧教你快速解除黑名单，避免再次被拉入！）第一次约会如何牵手？（教你如何牵手，避免被拒绝）第一次约会（关键在细节，如何从头到脚展现自信魅力）如何让男生主动约你？（第一次约会后的5个小技巧）爱情危机，如何应对情敌入侵？（挽回爱情，从心出发）初恋求支招（如何在第一次谈恋爱中避免尴尬和失误）失恋后的自我救赎（走出阴霾，重拾爱的信心）初恋小百科——爱情的起点（注意事项与心理调适，让初恋更甜蜜）第一次接吻的尴尬和不知所措怎么办？（学会应对，让第一次接吻变得更加自然）第一次见男友家长，女生必知事项（成功见家长的15个窍门）当老公出轨却不承认该怎么办？（15个段落详解如何应对出轨的老公）恋爱恐惧症的治疗方法（克服恋爱恐惧症，享受爱情的美好生活）当心！女人这4种行为会让老公变冷淡（如何避免让老公失去热情？）困境求生（理性选择与道德考量，）提前开始计划提取提取线索提示法提顿斯插图效应握手放松疗法揭开疗法搔头搜查心理搜查心理对策搜索模型搜索模式搭便车搭卖探索四川亲子游的最佳目的地和玩法亲子游必备!笔记本电脑周边装备大盘点五一亲子游好去处:河北周边精选景点推荐连云港亲子游酒店推荐 - 打造完美家庭度假体验济州岛亲子游攻略：探索韩国最美丽的火山岛全国最佳亲子游目的地推荐 - 0-3岁宝宝游玩攻略广佛水上乐园亲子游玩攻略：乐享清凉夏日时光武汉出发过年亲子游攻略：让孩子过一个难忘的春节 8月亲子游玩攻略：探寻小众景点，打造难忘暑期回忆 6月亲子游推荐:2岁宝宝最佳玩乐去处五一亲子游推荐:成都出发的最佳目的地国内亲子游推荐:适合小月龄宝宝的最佳目的地探寻广州周边最佳亲子海滩游玩攻略南京夏日室内亲子游玩攻略探索辽宁省亲子游好去处打造难忘家庭时光

ROTHR

Over-the-horizon radar