frequency error

Moreover the Doppler center frequency error due to instability of antenna pointing is studied. According to the offsets of SAR imaging dependant on the Doppler center frequency error, the required stability of antenna pointing is given.

研究了天线指向不稳定造成的多普勒中心频率误差，根据多普勒中心频率误差与图像位置偏移的关系，给出了图像质量对天线指向稳定度的要求。

Their basic frequency error performance and probability of loss-of-lock at various signal-to-noise ratios is compared by tracking a common simulated high-dynamic trajectory.

并以均方根估计误差和失锁概率为性能指标，通过对同一模拟的接收机高动态轨迹的跟踪估计，比较了两种不同估计技术的基本性能。

A new tool that can test the clock base frequency error of energy measuring devices and provide GPS standard time to calibrate real-time clock was introduced in this paper.

介绍了一种用来测量电能计量装置的时钟基频误差，并提供GPS标准时间以校准其实时时钟的新型工具。

Study on Power Frequency Error of SPWM in Active Inverters

有源逆变中SPWM工频误差问题的研究

Robust Cyclic Adaptive Beamforming under Cycle Frequency Error

针对循环频率误差的稳健CAB算法

To achieve fine symbol timing, a loop controlled by numerical controlled oscillator ( NCO) was used to track the residual timing error and the sampling frequency error after coarse timing acquisition based on a preamble.

基于前导字进行粗同步估计，并采用数字控制振荡器（NCO）控制的环路对残留符号定时误差和采样频率偏差进行跟踪补偿，以获得精确符号同步。

Analysis of Distortion Resulting from Frequency Error and Phase Error in Synchronous Demodulation

频率误差和相位误差在同步解调中的失真分析

Based on the definition of radar tracking target angle velocity maximum and acceleration maximum, relates the feasibility to represent the angle tracking characteristic, and the simulation way of the low frequency error signal is discussed.

基于雷达跟踪目标最大角速度和角加速度的定义，分析了用雷达跟踪目标最大角速度和角加速度表征雷达跟踪性能的可行性，并对角误差信号的模拟方法进行了讨论。

Experimental results show that this method can measure the signal frequency error effectively and accurately.

实验证明，该方法能够有效地精确测量信号的频率误差。

Especially forgetting factor ECAB has excellent performance under large cyclic frequency error.

特别是遗忘因子ECAB算法，在循环频率误差较大的情况下，仍能保持很好的性能。