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fixed frequency radar beacon 固定频率雷达信标
LFM-Costas stepped frequency radar (SFR) signal is an important radar signal. 线性调频 Costas频率步进雷达信号是一种很有研究价值的雷达信号。
Submesoscale Coastal Ocean Flows Detected by Very High Frequency Radar and Autonomous Underwater Vehicles. 甚高频雷达和自控潜水艇探测到的次中尺度沿岸海流。
X. Mao, Y. Liu. Null phase-shift polarization filtering for high frequency radar, IEEE trans. Aerospace and Electronic Systems, 2007.7. 毛兴鹏;刘永坦;邓维波.;频域零相移多凹口极化滤波;电子学报;录用
The ATC system that at present our country uses has system of radar beacon of air traffic control (ATCRBS) find location beacon system with disperse (DABS) , both and mutual compatible. 目前我国使用的ATC系统有空中交通管制雷达信标系统（ATCRBS）和离散寻址信标系统（DABS），两者相互兼容。
These models use a simulated input transducer that vibrates purely sinusoidally with a fixed frequency. 这些模型采用一个模拟输入探头，以完全正弦波的形式按固定频率振动。
The millimeter wave (MMW) Inter-pulse stepped frequency radar is a type of wide-band high-range-resolution radar. 毫米波脉冲频率步进雷达是一种宽带高距离分辨率雷达。
The frequency synthesizer is the core device of MMW inter-pulse stepped frequency radar, and its performance has great effects on radar system. 频率合成器是毫米波脉冲频率步进雷达的核心部件,其性能指标的优劣对整个雷达系统有较大的影响。
ATCRB Air Traffic Control Radar Beacon 空中交通管制雷达信标
Thomas, R.M., P.S.Whitham, and W.G.Elford, Response of high frequency radar to meteor backscatter, Journal of Atmospheric and terrestrial Physics Vol. 50 pp. 703-724, 1988. 龚瑞鸣，利用中坜雷达进行流星尾观测系统及方法之建立，博士论文，国立中央大学大气物理研究所，1998。
ATCRBS: Air Traffic Control Radar Beacon System 也叫做空管雷达信标系统
This paper studies how to detect the moving targets on the land and sea surface in the background of clutters by using pulse-pulse step frequency radar. 研究了用脉间步进频率雷达对杂波背景噪声下地面或海面动目标的探测。
Air-traffic control radar beacon system 空中交通管制雷达信标系统
The HV9931 is a fixed frequency PWM controller designed to drive proprietary single-stage single-switch no-isolated topology,cascading an input power factor correction(PFC)buck-boost stage and an output buck converter power stage. HVV9931是一个设计用于驱动专利单级单开关非隔离拓扑,级联一个输入PFC降压-升压级和输出降压变换器级的固定频率PWM控制器。
General specification for radar beacon 雷达指向标通用技术条件
If you touch the string gently, it vibrates at a fixed rate ( in other words, at a fixed frequency), but the distance between the top and bottom of the area in which it vibrates is small. 如果你轻轻地拨动琴弦，琴按照固定的频率来震动（换言之，其频率是固定的），但它从顶部到底部的震动区域的范围是小的。
Design of Omnidirectional Antenna for Radar Beacon 雷达信标全向天线设计
air traffic control radar beacon system 空中交通管制雷达信标系统
The tables are firmly fixed to the floor. 桌子都牢牢地固定在地板上。