search and rescue beacon frequency 搜救信标频率
laser beacon frequency locking 激光信标锁频
double frequency beacon [测] 双频信标
low frequency beacon 低频信标
radio-frequency beacon 射频信标机
very-high-frequency radio beacon 甚高频无线电信标
fixed frequency radar responder beacon 固定频率雷达应答标
sweep frequency radar responder beacon 扫描频率雷达应答器
"It will signal a dramatic shift to a cleaner, more sustainable method of providing frequency regulation on the grid," Beacon CEO Bill Capp told the GridWeek conference in Washington last week.
“这是一个巨大的改变，我们可以用更环保、更持续的方法来让电网实现频率的调整。” 灯塔公司首席执行官比尔·凯普上周在华盛顿出席电网周（GridWeek）大会时说道。
The error analysis shows that the measurement error is caused by the noise of the accelerometer, discrete double integration, noise of beacon and frequency characteristic error.
对线加速度计辅助惯性姿态角测量的误差分析表明，测量误差由加速度计噪声、二次积分离散化、信标噪声和加速度计频率特性误差组成。
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