The fact the plane has not appeared on radar when it neared land gives me cause for concern.
这架飞机在接近着陆时没有出现在雷达上的事实让我感到担忧。
There is sometimes no scanning line on radar screen.
雷达屏幕上有时没有扫描线。
There was nothing on radar anywhere near that location.
靠近那个位置雷达上什么也没有。
Officials said a recording on radar indicated the plane's change of course.
官方表示，雷达记录显示飞机改变了飞行路径。
The influence of time length and beat frequency on radar range is discussed.
讨论了信号时长和差拍频率对雷达作用距离的影响；
Malaysia Airlines Flight 370 was last seen on radar above Vietnam and Malaysia.
马航370航班最后一次出现在雷达是在越南和马来西亚上空。
This paper is centered on radar signal processor for VTS (Vessel Traffic Service) system.
主要研究VTS(船舶交通管理)系统中的雷达信号处理系统。
But the fact [the plane] has not appeared on radar when it neared land gives me cause for concern.
但是实际上(飞机)在接近着落的时候没有出现在雷达上，这是引起我关注的原因。
But actually, you want commercial jetliners to show up on radar for good air traffic control.
但实际上，你想要的商业客机，显示了对雷达良好的空中交通管制。
In this paper, influence of SAW linear FM signal phase noise on radar transmitter is analyzed.
本文研究了SA W线性调频信号的相位噪声对雷达发射机性能的影响。
A new fusion tracking system for maneuvering vehicle based on radar and image sensors is presented.
针对自主车辆的机动目标跟踪问题提出了一个利用雷达和图像传感器的融合跟踪方法。
To do geology radar exploration in city area, the disturbing signal of high-voltage line is found on radar profile.
市区内进行地质雷达勘探，探测剖面往往受到高压电线的严重干扰。
Simply speaking, stealth technology allows an aircraft to be partially invisible on radar or any other detection methods.
简单来讲，隐形技术可以使飞机在雷达或其他检测方法下变得部分不可见。
Phased array radar detection range depends on radar technical parameters and radar operation mode control parameters.
相控阵雷达作用距离决定于雷达技术参数与雷达工作方式的控制参数。
A simulation model of search radar is established based on radar measurement theory and moving target tracking theory.
运用雷达量测原理和机动目标跟踪理论，建立地面警戒雷达的功能模型。
Taranis is about the size of a small jet trainer, but with the look of a stealth bomber to make it hard to detect on radar.
“雷电之神”大约有小型喷气式教练机那么大，但隐形轰炸机般的外表使得雷达很难探测到它。
The topography is based on radar data collected during the Shuttle radar topography Mission, which flew onboard Space Shuttle.
地形数据来自于搭载在奋进号航天飞机上的飞船雷达地形测绘任务平台(theShuttleRadar Topography Mission)，于2002年2月中旬获得的数据。
No other passenger jet in modern history had disappeared so completely — without a Mayday call or a witness or even a trace on radar.
因为，现代历史上还没有哪架客机像法航447航班一样消失如此彻底----没有求救信号，没有目击者，甚至没有在雷达上留下任何痕迹。
A method of phase array radar anti-jamming effectiveness evaluation is discussed which is based on radar resource consumed criterion.
研究了一种以雷达资源消耗为标准的相控阵雷达抗干扰效能评估方法。
It was necessary to reinforce the protection of non-ionization and to improve male reproductive health care of people working on radar.
加强非电离辐射的防护、提高雷达作业人员的男性生殖健康保健意识仍十分必要。
The influences of the arrangement, length and content of the fibers in the composite on radar absorbing property were simply summarized.
简述了吸波纤维在复合材料中的排布方式、长度和含量对材料吸波性能的影响。
The studying of avian detection based on radar has made much progress and some practical radar avian surveillance systems have been set up.
基于雷达的鸟情探测的研究取得了很大进展，在一些发达国家已经建立起实用的雷达鸟击预警系统。
Based on radar waveform synthesis, a K-pulse concept is introduced and then a new radar target identification method is presented in this paper.
在雷达波形综合法的基础上，引入了K脉冲的概念，进一步扩展了识别目标的一种新方法。
PGA algorithm based on radar echo signal is one method of estimating and correcting phase error in time domain, and its algorithm is simple to use.
基于雷达回波信号的PGA算法是在时域估计和校正系统相位误差的一种方法，算法较简单。
This paper introduces the cause of CW radar's transmit leakage and the effects on radar 'operation and illustrate several means to restrain the leakage.
本文介绍了连续波雷达发射泄漏，成因和对雷达的影响，及列举了几种常规的连续波雷达发射泄漏抑制方法。
Although focusing on radar return data for "Echo Tops" and "Merged Reflectivity Composite" maps, these techniques are applicable to any set of planar images.
虽然主要关注“EchoTops”和“MergedReflectivityComposite”图的雷达返回数据，但是这些技术适用于任意一组平面图像。
Only hours prior to the March 1 event, air-traffic controllers in Yakutks, Siberia, claim to have picked up a UFO on radar traveling at 6000 MPH at a height of 65, 000ft.
在这起ufo事件发生的数小时前，俄罗斯雅库茨克、西伯利亚地区的空中交通管制员，声称用雷达检测到一架时速6000英里的速度飞行在65000英尺的高度。
Only hours prior to the March 1 event, air-traffic controllers in Yakutks, Siberia, claim to have picked up a UFO on radar traveling at 6000 MPH at a height of 65, 000ft.
在这起ufo事件发生的数小时前，俄罗斯雅库茨克、西伯利亚地区的空中交通管制员，声称用雷达检测到一架时速6000英里的速度飞行在65000英尺的高度。
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