Frequency differential phase shift keying demodulator Is there any reactive power error control in AVR? 频率差分移相键控解调器自动调压器有无功功率误差控制吗?
We have already seen that glint is an apparent movement of a target due to motion causing differential phase changes at the receiver. 我们早已了解,闪烁是目标的视在移动,这是由于目标的运动在接收机中引起不同相位变化的缘故。
The effects of weak optical feedback ( WOF) on the bit error rate ( BER) of coherent optical differential phase shift key-controll ( DPSK) systems are presented. 本文讨论了弱光反馈对相干光差分相移键控系统误码率的影响。
The characteristic of the differential phase detection ( DPD) signal of the SWML read-only disc is analyzed both in theory and experiment. 本文通过理论仿真和实验研究分析了SWML只读光盘的差分相位检测(DPD)信号的特性。
With typical parameters, the differential phase shift and the insertion loss are calculated. 在典型参数下,计算了该器件的差相移和插入损耗。
Analysis on transmission characteristics of differential phase shift keying signal of continuous pressure wave in drilling fluid channel 钻井液连续压力波差分相移键控信号的传输特性分析
Performance analysis of differential phase detection in shortwave SFH/ GMSK system 短波SFH/GMSK系统差分相位解调方案的性能分析
Transcendental equation and parameters of ferrite materials prepared by ourself have been used to calculate the variation of differential phase with temperature. 再利用超越方程和我们制备的铁氧体材料的参数对其差相移随温度的变化进行数值计算,结果表明随温度的升高差相移减小。
The optical modulation characteristics, differential gain ( DG), differential phase ( DP) and signal-to-noise ratio ( S/ N) are described as well in this paper. 文中论述了光调制特性、微分增益(DG)、微分相位(DP)、信噪比(S/N)等重要问题。
First-order statistics of absolute and differential phase of a Rice-Lognormal fading process are examined. 推导出了Rice-Lognormal衰落信道中的绝对相位分布和差分相位分布的表达式;
Differential Gain And Differential Phase In Satellite Television Broadcasting 卫星电视广播中的微分增益和微分相位
Firstly, the selection of the ferrite material and the structure design are discussed, the method of improving the differential phase shift of the device is also presented here. 首先讨论了器件的铁氧体材料参数的选取和器件结构的设计以及提高器件差相移的方法。
This paper describes the influence of both magnetization of substrate and length of coupling-line, on both the frequency characteristic of insertion loss and the frequency characteristic of differential phase shift of a multistrip device, and the magnetic interference in the multidigit stage-joint device. 本文讨论了磁化强度和耦合线长度对多带器件的插入损耗、差相移频率特性的影响,及多位级联式器件中各单元间的磁干扰问题。
The thesis presents a new differential modulation, Coherent Amplitude and Differential Phase Shift Key ( CADPSK). 本文提出了一种新的差分调制方式,我们称之为相干幅度差分相移键控(CADPSK)。
The effect of quantization distortion of the differential gain ( DG) and differential phase ( DP) in digital color TV systems is analysed. Two cases are taken into account. 本文分析了数字彩色电视系统中量化失真对微分增益(DG)和微分相位(DP)的影响。
From the relationship between the input data and the differential phase, we propose a simple and feasible demodulator. 本文从输入数据和相位增量的关系出发,提出了一种简单可行的解调电路。
This paper discusses fundamental principle of attitude determination using the global positioning system ( GPS) differential phase measurements. An algorithm is developed for solution processing and the design of THADS software is designed for attitude determination. 论述了利用全球定位系统(GPS)载波相位观测值进行姿态测量的原理,介绍了航天器姿态测量软件THADS的算法和软件设计。
A Bit Error Probability ( BEP) computation formula for binary Partial-Response Continuous-Phase Modulation ( PRCPM) with Differential Phase Detection ( DPD) and Maximum Ratio Combining ( MRC) in composite satellite mobile channel is presented in this paper, and numerical results are also given. 该文给出了组合卫星移动信道中采用差分相位检测(DPD)和最大比组合(MRC)的部分响应连续相位调制(PRCPM)信号的误比特率计算公式,并给出了有关数值计算结果。
The Effect of Quantization Distortion on the Differential Gain and Differential Phase in Digital TV Systems 数字电视系统中量化失真对微分增益和微分相位的影响
In this paper, the propagation constant transcendental equation for dielectric loading twin toroidal phase shifter using grooved waveguide is given. With typical parameters, freguency characteristics of the differential phase shift and the insertion loss are computed. 本文给出介质加载双环背脊波导移相器的传输常数方程,计算了典型参数的相移,和损耗的频率特性。
The theoretical and experimental results of a nonreciprocal H plane dielectric-loaded H plane ferrite phase shifter are presented, including the approximate formula of differential phase shift and the transcendental equation of differential phase shift frequency response with zero slope. 本文报告了H面铁氧体非互易移相器的H面介质加载的研究结果;推导了该器件的差相移近似表达式及差相移频率特性斜率为零时的超越方程。
Two methods of variable polarization are discussed, and some formulae for wave-mode differential phase, nonreciprocal phase and variable polarization coefficient are deduced. 讨论了两种实现变极化的方法,推导了求解波型差相移、非互易差相移和变极化系数的精确公式。
We propose and demonstrate an improved differential phase shift key distribution scheme. 在差分法基础上提出了一种改进的差分相位编码量子密钥分发(QKD)方案。
This paper proposes a systematic error cancellation method which is suitable for measuring differential phase shifts of microwave variable-loss two-port devices. 本文提出一种特别适用于测量微波变耗二端口器件相移差的系统误差对消法,叙述了它的原理并作了误差分析。
Underwater Acoustic Data Transmission Based on Differential Phase Shift Keying 基于差分相移键控的水声数据传输技术研究
Corrections of Differential Gain and Differential Phase 微分增益和微分相位的校正
The voltage transducer in this paper is designed based on the converse piezoelectric effect of quartz, it can measure the voltage through the changes of differential phase which in the dual-mode fiber. 首先,对本课题研究的全光纤电压互感器的基本原理进行了介绍,该互感器是利用石英晶体的逆压电效应,通过测量双模光纤的相位差变化来测得电压的。
And the receiver include differential phase discrimination, signal detecting, frequency estimates and timing tracking loop. 接收机部分包括差分鉴相、匹配滤波、信号检测、定时同步、频偏估计和定时跟踪等。
Meanwhile, a algorithm for frequency offset estimation based on differential phase is introduced. 介绍了一种基于差分相位的频偏估计算法。
At present, many researches about all-optical wavelength converters only based on the signal modulation formats of binary amplitude shift keying ( OOK) and differential phase shift keying ( DPSK), but it is very few to the signal modulation format of polarization shift keying ( PolSK). 目前,全光波长转换器的研究主要集中在二进制振幅键控(OOK)和差分移相键控(DPSK)信号调制格式,对于偏振移位键控(PolSK)信号调制格式全光波长转换的研究很少。