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实现gps卫星的跟踪功能。载波跟踪环采用锁频环辅助下的锁相环,码跟踪环采用延迟锁相环。-Gps satellite tracking to achieve. Carrier tracking loop using the aid of frequency-locked loop PLL, code tracking loop using delay locked loop.
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gps单频软件接收机跟踪程序,用c语言在vc++6.0开发环境下写成,并且对载波产生和码产生使用x87的浮点汇编指令集提高速度。-single-frequency software receiver gps tracking program, using c language in vc++6.0 development environment, written and produced for use of carrier generation and code compilation of
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RFID is an area of automatic identifi cation that is gaining
momentum and is considered by some to emerge as one of
the most pervasive computing technologies in history. In its
simplest form, RFID is a similar concept to bar coding. It is
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接收端采用的算法和程序流程与发送端发送的OFDM符号的帧结构有关系。具体的帧结构,以及定时估计,频偏估计,剩余误差跟踪的算法可参考算法说明文档。-Receiver used algorithms and program flow with the sender sends the frame structure of OFDM symbols are. Concrete frame structure and timing estimates, frequency offset estimati
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在机动目标跟踪中,机动目标模型是机动目标跟踪的基本要素之一,一般希望机动目标模型能准确表征目标机动时的各种运动状态。比较常用的模型有匀速运动(CV)模型、匀加速运动(CA) 模型、时间相关模型(Singer)和机动目标“当前”统计模型。上述模型均采用机动频率表征目标的机动情况。在应用当中,通常采用固定的机动频率,这就表示机动目标的机动时间是一定的,而实际上机动目标的机动时间是不断变化的,也就是说机动频率是不断变化的,采用固定机动频率必然会带来误差。采样周期在0.5—2S时,机动频率越小跟踪精度越
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使用costas环实现载波同步,绘制出了载波频率跟踪曲线-Achieve carrier synchronization using the costas loop, draw the curve of the carrier frequency tracking
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adaptive beamformer using an FFT filter bank with/without DOA estimation and tracking
(frequency domain version of Frost beamformer)
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针对频率周期振荡的振动系统讨论自适应控制问题,在频率跟踪的基础上对频率变化的振动响应进行控
制,给出相应的估计、滤波与控制方法。首先在子空间辨识原理的基础上,通过测量信号自相关序列的递推运算获得信号
频率 然后根据估计频率实时调整带通滤波器的中心频率,使其跟踪信号频率,实现信号分量的跟踪滤波 最后在LMS方
法的基础上构造对信号分量进行控制的自适应控制器。-The adaptive vibration control of systems excited by forces of p
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大功率高Q值超声振动系统频率自动跟踪.pdf-High-power ultrasonic vibration system with high Q value of the automatic frequency tracking. Pdf
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锁频环又称为自动频率控制(AFC)环,其利用反馈回路对输入频率变化进行调整,最后达到对频率的跟踪,广泛应用于雷达,卫星导航等领域对多普勒频率的跟踪。-Locked loop, also known as automatic frequency control (AFC) loop, the use of feedback loop to adjust the input frequency changes, and finally achieve frequency tracking is wi
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这是一些关于旋转机械的频率追踪的参考资料,希望对大家有所帮助。-This is some of the rotating machinery frequency tracking reference, and they hope to help everyone.
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基于风能的充分利用, 从分析风力机运行特性出发, 针对变速恒频风力发电系统的特点, 综述了捕获最
大风能的方法,-Based on the full use o f wind ener gy , the operating char act eristics of the w ind turbine and the character
istics of v ariable speed co nstant frequency( VSCF) w ind pow er g ener at i
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采用单片机PIC16F877A 编写的基于串联谐振主回路的感应加热程序,实现对谐振频率的自动跟踪,已经过阻性负载和感性负载实验,实验结果良好。-Based on written using PIC16F877A microcontroller series resonant circuit induction heating main program, automatic tracking of the resonance frequency has been resistive load an
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基于频域的目标跟踪算法介绍,以及其在DSP上的优化。-method of target tracking in frequency domain based on dsp.nh
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使用MATLAB 代码完成COSTAS环对QPSK调制的解调载波频率的跟踪-Use MATLAB code completion COSTAS loop tracking of QPSK modulation carrier frequency demodulation
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仿真实现,锁相环的跟踪与实际载波频率的仿真与对比,信号的调制与解调。(The simulation and comparison between the tracking of the phase-locked loop and the actual carrier frequency are simulated, and the modulation and demodulation of the signal are presented.)
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第十章 频率相位跟踪,更快地学习频率相位跟踪的内容(Tenth chapter frequency phase tracking to learn the content of frequency phase tracking faster)
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线调频小波路径算法的计算程序,实现信号瞬时频率追踪(The calculation program of the linear frequency modulation wavelet path algorithm to realize the tracking of the instantaneous frequency of the signal)
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超音频串联谐振式感应加热电源为研究对象,应用锁相环和PID 技术,采用数字信号处理器(DSP)和复杂可编程逻辑器件(CPLD)联合控制的数字化技术实现感应加热电源的频率跟踪和0°~180° 自由移相调功,为感应加热电源系统的数字化、信息化、柔性化、智能化控制提供了优质、可靠的技术基础。(Superaudio series resonant induction heating power supply as the research object, the application of PLL a
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介绍了一种基于DSP 的高频感应加热电源。现以MOSFET为开关器件,并通过逆变器并联扩容为60kW/300kHz。采用多重斩波技术,增大了斩波电路的容量,将基于DSP 的fuzzy-DPLL 复合数字锁相环技术应用在高频场合,使锁相有快速的动态性能和高精度的稳态性能,实现了对负载频率的可靠跟踪及对逆变状态的可靠控制,提高了逆变器
的工作效率和功率因数。(A high frequency induction heating power supply based on DSP. MOSFET i
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