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- PN code phase measurement PN码相位测量
- The brief description of digital downconverter,acquisition of PN code phase, PN code phase tracking and data demodulating is given in this paper. 本文提出了一种高动态高码率数字化解扩接收机的设计方案，同时简要介绍了其数字下变频、伪码初相位捕获、伪码相位跟踪和数据解调的基本设计思想。
- To despread and demodulate the signal correctly in the spread spectrum system, the PN code phase of the receiver must be synchronized with that of the input signal precisely. 在扩频通信系统中，为正确解扩和解调接收到的扩频信号，接收机的PN序列相位和接收信号的PN序列相位必须完全同步；
- A PN Code Phase Acquisition With Non-coherent Sequential Detection 基于非相干序贯检测器实现的伪码捕获器
- Fining of code phase measurement 码相位测量精化
- PN code phase modulation 伪码调相
- PN code phase modulation fuze 伪码调相引信
- Profilometry for phase measurement with non-integral twin-frequency grating[J]. 引用该论文 陈永权;曹益平;常山.
- In this article, we propose a fast correlation algorithm of multiple PN code by Fast Walsh Transform (FWT). 本文提出了一种利用快速沃尔什变换(FWT)实现对复合码进行快速相关的算法。
- PIC Microcom with wireless PN Code Generator Firmware source code with PIC21xx and Internal CLK has been tested. (译)：知情同意Microcom无线PN码发生器固件的源代码与PIC21xx和内部时钟已经过测试。
- Working principle of pseudorandom code phase modulation CW fuze is introduced. 分析了此体制下引信的抗侦察性能。
- The mean square timing jitter performance of the CTL and the DTTL for MSK waveform PN code was analyzed in a wide range of symbol SNR. 仿真结果表明：在大信噪比条件下，数据转换跟踪环与码片跟踪环性能一致；
- This paper presents a rapid acquisition scheme for PN code with double-channel by microprocessor controlled In-phase and Quad-phase CCD. 本文提出了一种以微处理机为控制器的电荷耦合器件(CCD)正交双通道PN码快速捕获方法,该方法能对不同码型、码长、码速率的PN码所调制的二相PSK直扩信号进行解扩,且具有体积小、重量轻、易于集成化、功耗低的特点。
- Phase-shift error is the main source of phase measurement error in phase-measuring profilometry(PMP). 移相误差是移相法相位测量轮廓术的主要误差来源。
- Computer simulation shows that this algorithm can get rapid PN code acquisition in very low SNR and is easy to be realized in FPGA and DSPs. 实验证明，这种捕获算法易于采用可编程门阵列和数字信号处理器相结合的方式实现，可以在极低的信噪比下实现扩频PN码的快速捕获。
- WAMS includes the PMU (Phase Measurement Unit), communication system and the control system of the EMS and SCADA. WAMS主要由位于厂站端的PMU、通信系统和位于调度中心的控制系统组成。
- For MSK waveform PN code, this paper adopts a novel Chip Tracking Loop (CTL) for PN code ranging, which is a modified Data Transition Tracking Loop. 本文针对MSK波形伪码，采用新型的码片跟踪环用于伪码时钟恢复。
- The accuracy can be enhanced with optical heterodyne technique and the phase measurement of Doppler signals. 对多普勒信号进行光学外差处理并对多普勒信号进行测相，可以提高测量的精度。
- This algorithm firstly calculates the average power serial, and then finishes the detection of PN code rate through the analysis of frequency spectrum and smooth processing. 该算法首先计算序列的平均功率，然后对其进行谱分析并作平滑处理而完成伪码速率的判定。
- A symmetrical common-path heterodyne interferometry is proposed,which utilizes a traverse Zeeman laser and a high-speed phase measurement technology. 提出了一种对称共路双频外差干涉测量硬盘磁头飞行高度的方法,用于在线检测磁头飞行高度瞬态调制变化。
