Reprogrammed target radar with lyrics.

目标跟踪雷达嗡嗡响。

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The antenna introduced in this paper is different from the ordinary reconnaissance radar, which is a passive antenna receptive system receiving target radar signals.

本文所介绍的天线有别于一般的侦察雷达，是一种无源的接收目标雷达信号的天线接收系统。

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The simulation results show that this method is not only suitable for the detection and the parameter estimation of multi target radar echo signal, but also good at reducing noise.

仿真实验表明，该方法能有效地检测多目标雷达回波信号并准确地估计其参数，而且有较好的抗噪声性能。

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The Patriot missile homes on an electronic signal "painted" on the target by the radar, and relays its position in relation to the target back to the radar and on to the control centre.

BBC: Fact file: Patriot missile defence

Its defining characteristic is the low-observable, or stealth, features that make it nearly impossible to track or target using conventional radar or heat-seeking missiles.

FORBES: Outcome Of Three Programs Will Drive Defense Sector Consolidation

The company is one potential target that has been on the radar of larger defense companies, a second industry source said.

FORBES: An increase in border security could result in more M&A