频差倍增,frequency difference multiplication,在线英语词典,英文翻译,专业英语

1) frequency difference multiplication

频差倍增

Phase coincidence detection technique and frequency difference multiplication principle are described.

介绍了相位重合点检测技术和频差倍增原理,提出了基于频差倍增技术的计数方案,实现了虚拟频标比对仪的设计,着重分析了系统的运行原理和实现方法。

2) timing the difference of frequency method

频差倍增法

The paper introduces three methods to measure the stabilization of short-term frequency:beating method,mixing two frequency method,timing the difference of frequency method,and the method to deal with the data,and on the base of beating method and timing the difference of frequency method,bringing a new method,to advance the precision.

简单介绍了3种常用的测量短期频率稳定度的方法:差拍法,双混频法和频差倍增法,以及对于数据处理所采用的方法,并且在其中的差拍法和频差倍增法基础上提出一种改进的方法,从而可以提高整个系统的测量精度。

3) 1 × 106 frequency difference multiplier

1×106频差倍增器

4) frequency difference

频差

The Research of Time Delay Estimation Method of General Cross Correlation with Frequency Difference;

频差存在时广义相关时延估计方法研究

In the real three station TDOA locating system,there is frequency difference between IF output of the receiver receiving direct signal and IF ouput of the receiver recieving indirect signal ,which decreases the TDOA estimation precision.

在实际三站或多站时差定位系统中 ,接收转发信号和直达信号的两接收机的中频输出信号存在频差 ,从而影响时差估计精度。

5) FDOA

频差

A Method of Dual-Satellites Geolocation Using TDOA and FDOA and Its Precision Analysis;

双星时差频差联合定位方法及其误差分析

The low orbit dual-satellites passive location method for electronic reconnaissance using TDOA(time difference of arrival) and FDOA(frequency difference of arrival) was studied and presented which locates ground emitter from space satellites.

通过公式推导和替换,该算法将原本复杂的时差、频差定位方程组化简为简单的6次实系数多项式方程,极大地降低了原方程组的计算复杂度。

The locating principle on TDOA&FDOA with twin satellites is discussed in this paper.

分析了双星 TDOA(时差)/FDOA(多普勒频差)定位原理,并提出了增加测向或利用卫星运动特性来消除定位镜像点的方法,最后通过仿真分析了参数测量精度与定位精度的关系。

6) frequency offset

频差

Performance evaluation of NOrth-MDPSK with frequency offset in single path slow fading channel model;

单径慢衰落信道模型中带有频差的NOrth-MDPSK性能评估

In the QPSK demodulation′s system,many factors can cause the carrier′s frequency offset and phase error,such as Doppler frequency offset,the central frequency offset of the receiver′s local oscillator and the phase noise.

针对这一误差,介绍了开环系统中频差校正原理,然后通过滑动窗口求均值的方法实现平均相位误差校正,并利用Matlab仿真证实,在同样信噪比下,采用平均相差法得到的误码率比直接相差提取的方法低很多。

A scheme for joint frequency offset and spread spectrum code time delay acquisition was proposed,and the noise and interference estimation algorithm was put forward based on peak windows.

给出了一种频差与扩频码同步联合捕获的方法,提出了一种基于峰值窗口的噪声与干扰估计算法,基于此估计,在信号识别中采用了相对门限。

参考词条

频差控制静态频差频差法相对频差动态频差频差补偿双频频差频差测量频差组合频差系数中频差频差特性基频差值背伸

补充资料：差差

1.犹参差。不齐貌。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。

首页 \| 翻译 \| 影视 \| 论坛 \| 索引频差检测载波频差频差（FDOA）频差函数频差死区频差估计

1) frequency difference multiplication 频差倍增 1. Phase coincidence detection technique and frequency difference multiplication principle are described. 介绍了相位重合点检测技术和频差倍增原理,提出了基于频差倍增技术的计数方案,实现了虚拟频标比对仪的设计,着重分析了系统的运行原理和实现方法。 2) timing the difference of frequency method 频差倍增法 1. The paper introduces three methods to measure the stabilization of short-term frequency:beating method,mixing two frequency method,timing the difference of frequency method,and the method to deal with the data,and on the base of beating method and timing the difference of frequency method,bringing a new method,to advance the precision. 简单介绍了3种常用的测量短期频率稳定度的方法:差拍法,双混频法和频差倍增法,以及对于数据处理所采用的方法,并且在其中的差拍法和频差倍增法基础上提出一种改进的方法,从而可以提高整个系统的测量精度。 3) 1 × 106 frequency difference multiplier 1×106频差倍增器 4) frequency difference 频差 1. The Research of Time Delay Estimation Method of General Cross Correlation with Frequency Difference; 频差存在时广义相关时延估计方法研究 2. In the real three station TDOA locating system,there is frequency difference between IF output of the receiver receiving direct signal and IF ouput of the receiver recieving indirect signal ,which decreases the TDOA estimation precision. 在实际三站或多站时差定位系统中 ,接收转发信号和直达信号的两接收机的中频输出信号存在频差 ,从而影响时差估计精度。 5) FDOA 频差 1. A Method of Dual-Satellites Geolocation Using TDOA and FDOA and Its Precision Analysis; 双星时差频差联合定位方法及其误差分析 2. The low orbit dual-satellites passive location method for electronic reconnaissance using TDOA(time difference of arrival) and FDOA(frequency difference of arrival) was studied and presented which locates ground emitter from space satellites. 通过公式推导和替换,该算法将原本复杂的时差、频差定位方程组化简为简单的6次实系数多项式方程,极大地降低了原方程组的计算复杂度。 3. The locating principle on TDOA&FDOA with twin satellites is discussed in this paper. 分析了双星 TDOA(时差)/FDOA(多普勒频差)定位原理,并提出了增加测向或利用卫星运动特性来消除定位镜像点的方法,最后通过仿真分析了参数测量精度与定位精度的关系。 6) frequency offset 频差 1. Performance evaluation of NOrth-MDPSK with frequency offset in single path slow fading channel model; 单径慢衰落信道模型中带有频差的NOrth-MDPSK性能评估 2. In the QPSK demodulation′s system,many factors can cause the carrier′s frequency offset and phase error,such as Doppler frequency offset,the central frequency offset of the receiver′s local oscillator and the phase noise. 针对这一误差,介绍了开环系统中频差校正原理,然后通过滑动窗口求均值的方法实现平均相位误差校正,并利用Matlab仿真证实,在同样信噪比下,采用平均相差法得到的误码率比直接相差提取的方法低很多。 3. A scheme for joint frequency offset and spread spectrum code time delay acquisition was proposed,and the noise and interference estimation algorithm was put forward based on peak windows. 给出了一种频差与扩频码同步联合捕获的方法,提出了一种基于峰值窗口的噪声与干扰估计算法,基于此估计,在信号识别中采用了相对门限。参考词条频差控制静态频差频差法相对频差动态频差频差补偿双频频差频差测量频差组合频差系数中频差频差特性基频差值背伸补充资料：差差 1.犹参差。不齐貌。说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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