frequency shift system
英 [ˈfriːkwənsi ʃɪft ˈsɪstəm]
美 [ˈfriːkwənsi ʃɪft ˈsɪstəm]
网络 频移制
双语例句
- The design and realization of minimum frequency shift keying modulation system based on FPGA
基于FPGA的最小移频键控调制器的设计与实现 - The utility model discloses a minimum frequency shift keying ( MSK) modulator, and is applied to a digital information transmission system.
最小移频键控（MSK）调制器，适用于数字信息传输系统中。 - The maximum Doppler frequency shift is an important parameter which affects the performance of the OFDM system.
在OFDM系统中，影响其性能的一个重要参数就是最大多普勒频移。 - Analysis of the performance of the thyratron used continuous AC-AC phase shift, frequency shift and speed control system
连续移相交交变频调速系统晶闸管工作状态的分析 - LEO satellite communication system has the properties of larger power dynamic range, larger and faster changed doppler frequency shift and rapid fluctuation compared to ordinary communication system.
相对于一般的通信系统而言，低轨卫星通信系统具有信号动态范围大，多普勒频移大且变化速度快，信道起伏剧烈等特点。 - Frequency-shift Device Digital Detection System
移频设备数字监测系统 - The paper make an analysis and comparison to the function and cost of 4 channel, 8 channel and 18 channel frequency shift auto? obstruction system, and recommend the 18 channel system as the best to invest.
本文通过对4信息、8信息、18信息移频自动闭塞的投资及功能进行分析和比较，说明18信息移频自动闭塞能提供速度等级的信息，最具投资价值； - A novel type of spreading access codes with set-wise zero correlation window ( ZCW) is proposed for minimum orthogonal frequency shift multicarrier direct spread code division multiple access ( CDMA) system in which the carrier gap is half of the reciprocal of the chip cycle.
为了设计出载波间隔只有码片周期倒数一半的多载波直接扩频系统，提出了一类分组零相关窗（ZCW）地址码。 - A approach for Doppler frequency shift correction in multi-rate bpsk/ dbpsk software demodulate system
在多速率BPSK/DBPSK软件解调中多普勒频偏矫正的一种方法 - Detection of Doppler Frequency ─ Shift Signals in Accoustic Remote sensing System
声遥感系统Doppler频偏信号的检测 - Executions show the measurement accuracy is in good agreement with the requirement of the non-insulation frequency-shift auto-block system monitoring frequency-shift.
运行结果表明，测量准确度满足移频自动闭塞系统移频测量要求。 - Phase FM-DCSK ( Frequency Modulation-Differential Chaos Shift Keying) for increasing the data rate of the chaos modulation system is proposed.
为进一步提高混沌通信系统的传输速率，提出了一种基于FM（frequencymodulation）的四相混沌键控方法。 - Detecting the small frequency shift is the key of Brillouin scattering Lidar underwater detection system. The edge technique is a new and powerful method for measuring small frequency shifts, in particular it can be applied to obtain underwater Brillouin frequency shift with a Brillouin Lidar system.
测量微小频移是激光布里渊散射雷达水下探测系统的关键，边缘探测技术是一种能有效探测微小布里渊频移的方法。 - In the FM-QCSK ( Frequency Modulated Quadrature Chaos Shift Keying) communication system, frequency modulation of the continuous-time chaotic signal makes it possible to generate an inherent wideband signal with constant energy per bit.
在调频-四相混沌键控（FM-QCSK）混沌数字通信系统中，对时域连续混沌信号进行频率调制，使单位码元具有近似相等的比特能量； - The Access Code Design for Minimum Orthogonal Frequency Shift Multi-Carrier Direct Sequence CDMA System
最小正交频移多载波直扩系统的地址码设计 - Having been taken advantage of narrow band frequency modulation communication and wide band extended frequency communication, this meter reading system bases on the extended frequency communication, applies direct sequence for extended frequency mode and phase shift keying for modulation system.
结合窄带调频通信和宽带扩频通信优势，以扩频通信为基础，扩频方式采用直接序列扩频，调制方式为相移键控。 - Brillouin scattering Lidar underwater detection system involves Brillouin scattering, Brillouin frequency shift, i.e. Brillouin Lidar system and edge technique.
激光布里渊散射雷达水下探测技术涉及到布里渊散射、布里渊频移的测量，即激光布里渊散射雷达系统和边缘探测技术。 - In TDD pre-equalization OFDM systems, the Doppler frequency shift would make channel time-variant, degrade system performance.
对于TDD预均衡OFDM系统，多普勒效应导致了信道的时变，并使预均衡处理产生误差，且随处理时延的增大，预均衡系数误差越大，由此影响了预均衡系统的性能。 - The design of frequency shift track circuit test system
移频轨道电路测试系统的设计 - Criterion of Choosing the Frequency Shift in LDV System
激光测速频移量的选择准则 - On false frequency shift in Doppler receiving system
关于多普勒接收系统中的假频移 - By calculating the Doppler frequency shift of the scattered signals, the system can get the information of the velocity of the target.
探测回波信号的多普勒频移，可以计算出目标的运动速度。 - The detecting precision of Brillouin scattering frequency shift direct influence the detecting ability of the system and the detecting precision of the ocean parameters.
布里渊散射信号频移量的测量精度的高低直接影响系统的探测能力和水下各参数的探测精度。 - In this thesis, the multiple access interference cancellation algorithms for FH system are investigated. Firstly, the related knowledge of FH communication system and the fast frequency hopping/ Multiple frequency shift keying ( FFH/ MFSK) system model are introduced.
首先，本文对跳频通信系统的相关理论知识和快跳频多进制频移键控（FFH/MFSK）系统模型进行了介绍。 - Underwater acoustic channel experiences severe Multi-path extension, high ambient noise, limited bandwidth, large transmission and propagation delay, fluctuation effect and great doppler frequency shift. These features greatly reduce the reliability and effectiveness of underwater acoustic communication system.
水声信道具有多径扩展、高环境噪声、带宽受限、传输时延大、起伏效应和多普勒频移大等特点，这极大地制约了水声通信系统的可靠性和有效性。 - The experiment system uses a positive feedback based on active frequency shift method to protect island, and ensured the PV grid-connected inverter control system can operate safely and stability.
该实验系统还采用一种基于正反馈主动频移法进行反孤岛保护，确保了光伏并网发电系统能稳定安全的运行。 - Orthogonal frequency division multiplexing ( OFDM) is a promising technique which can be thought as a hybrid of multicarrier modulation ( MCM) and frequency shift keying ( FSK) modulation and it is the main candidate technology for the new generation communication system.
正交频分复用（OFDM）是一项很有前途的技术，可以看成是多载波调制（MCM）和频移键控（FSK）调制的结合，是新一代无线通信传输的主要候选技术。 - In this dissertation, We study on multi-access interference cancellation technology of fast frequency hopping multi-access/ multiple level shift keying ( FFH-MA/ MFSK) systems, to improve system capacity and performance as low complexity.
本论文就快跳频多址多频移键控（FFH-MA/MFSK）通信系统的多址干扰消除技术展开研究，力求以较低的算法复杂度达到提高通信系统容量和性能的目的。 - In a mobile environment, ICI is mainly caused by Doppler frequency shift. While, when combined with CDMA, Multiple Access Interference ( MAI) is another key factor affecting system performance.
在移动环境下，ICI的产生主要由多普勒频移引起，同时，与CDMA结合后，CDMA系统本身的多址干扰（MAI）也是影响系统性能的关键因素。 - In some cases, however, like extremely bad channel conditions, along with the Doppler frequency shift as well as other types of frequency offset and nonlinear distortion, system is likely to result in poor performance of the receiver.
然而在有些情形中，由于信道条件极其恶劣，伴随着多普勒频移以及其他类型的频率偏移等非线性失真，导致接收机在同步性能上表现很差。