1) initial frequency
初始频率
1.
By computing the quadratic phase (QP)function of the signal,it is shown that the QP function is concentrated along the frequency rate law of the signal So the peak of the QP function yields the estimates of the frequency rate,and the initial frequency is obtained by the dechirp technique.
该算法利用计算信号的二次相位函数,得到其能量分布集中于信号的调频率曲线上的结论,因此通过谱峰检测可以获得信号的调频率估计,进而通过解调频技术得到初始频率的估计。
2.
By fractional dimension search,the Chirp rate,initial frequency,pulse width and time of arrive are estimated with relatively high accuracy at negative SNR.
基于时域压缩宽窄变换,提出一种宽带线性调频脉冲的检测与参数估计方法,避免了对宽带信号采集的根本性困难,能在负信噪比条件下实现未知参数chirp脉冲信号的检测,通过分维搜索精确地估计出调制斜率、初始频率、脉冲宽度和到达时间。
3.
Based on the remainder theorem and direct dechirp operation,an algorithm for estimation of chirp rate and initial frequency of the subsampling wideband LFM signal unambiguously is presented.
基于中国余数定理解频率模糊和解线调方法,提出一种无模糊欠采样的宽带线性调频信号的调频斜率和初始频率的估计算法。
2) initial carrier frequency error
初始频率误差
3) initial frequency shift
初始频率移动
4) Initial frequency offset
初始频率偏移
5) Initial excited frequency
初始激振频率
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条