伪码

伪码对N倍钟码数字调制后的自相关函数与功率谱

Autocorrelation functions and power spectrums of PN code-digitally-modulated n-times clock codes

高动态GPS接收机中伪码捕获问题研究

Research on Pseudorandom Code Acquisition in Dynamic GPS Receiver

基于FPGA的DS/CDMA系统伪码同步计算机仿真

Computer simulation of DS / CDMA system pn-code-synchronization based on FPGA

辅助型GPS接收机中伪码相位延时及其不确定度估计算法研究

Estimate Algorithm for Pseudo-code Phase Delay and its Uncertainty in the Assisted GPS Receiver

动态环境下基于FFT实现伪码快速捕获

A FFT-based Approach for PN Code Fast Acquisition Operation in Dynamic Situation

基于FFT的两种伪码快速捕获方案的研究与实现

Two Methods of Rapid Code Acquisition Based on FFT

基于自相关差分累积量的长码DS信号伪码周期估计

Estimation of Pseudo-Random Sequence Duration of DS Signal Based on Differential Autocorrelation Cumulant

基于FFT的伪码快速捕获

A fast code - acquisition using FFT

基于匹配滤波器与FFT的伪码快速捕获方法及性能分析

Fast Pseudo-Code Acquisition Method Based on Match Filter and Fast Fourier Transform and Performance Analysis

伪码调相与PAM复合测距系统研究

Research on PN phase modulation and PAM combined ranging system

在SAR卫星处于高动态环境下，因而伪码的快捕也成为影响实时性的重要因素。第七章主要研究了如何快速捕获伪码。

SAR satellites are under high dynamic , which the capture of long PN code will effect the real-time seriously .

利用FPGA进行伪码识别重构系统的设计是本文的主要工作。

The design of system of PN code recognition and reconstruction which makes use of FPGA is the main task of the paper .

本文主要阐述了在某雷达系统中为实现伪码对齐，所采用的滑动控制方法的原理及在FPGA芯片上的实现。

This article expatiates on the theory of a slippage control way for moving PN code and the realization on the chip of FPGA .

如果你也涉猎了叫做“Web设计”的伪码梦幻世界的话，你无疑会发现在这个时代绝大多数设计师会分属于两个阵营之一。

If you 've also dabbled in the wonderful world of pseudo-coding called " web design " you undoubtedly recognize that , these days , most designers fall into one of two camps .

分析了直接下变频导航接收机中，I、Q信号的非正交引起的载波及伪码的跟踪误差。

In direct conversion navigation receiver , due to the IQ mismatch , there will be track error in carrier phase and code phase .

伪码测距延迟锁定环路（DLL）性能分析

The synchronization performance analysis of Delay locked loop ( DLL ) in PN code ranging system

伪码QPSK调制的功率谱分析和实验研究

Power spectrum analysis and experimental research of PN code modulated QPSK waves

设计在高动态环境下工作的GPS接收机，其难点之一便在于对卫星伪码的快速捕获。

To design the GPS receiver working in high dynamic circumstance , the first problem to be settled is how to catch the PN code of the satellite .

MSK波形伪码码片跟踪环性能分析

Performance analysis of CTL used for MSK waveform PN code

MDD的这个方法类似于80年代的伪码设计实践。

This approach to MDD is analogous to the pseudo-code design practices of the1980s .

提出AOS建议下伪码传输的一种新方案，对该方案的可行性进行详细论证，并设计实现框图。

A new scheme of pseudo code ranging is proposed .

利用AOS插入业务实现伪码测距的实验验证

The Experiment of Verifying Pseudo Code Ranging by Insert Service of AOS

目前，GPS卫星信号采用两种扩频伪码序列，分别是用于标准定位服务的C/A码和用于精确定位服务的P码。

As it stands today , GPS adopts two types of pseudorandom noise code spreading sequences , coarse / acquisition code for Standard Positioning Service and precision code for Precise Positioning Serivice , respectively .

另一方面是利用匹配滤波器的方法进行实时相关研究。基于匹配滤波器与FFT的伪码快速捕获方法及性能分析

The other is the study of real-time correlation using MSF . Fast Pseudo-Code Acquisition Method Based on Match Filter and Fast Fourier Transform and Performance Analysis

一种是FFT辅助的部分相关伪码快捕方法，该方法能够在同一时刻对所有频点进行搜索。

One is fast code acquisition based on the assistant FFT and the partial matched correlator , which can search all frequency points in one time .

Tanner图和积算法的伪码捕获及性能分析

PN Code Acquisition Sum-Product Algorithm and Performance Analysis Based on Tanner Graph

原方案中在FPGA实现的载波和伪码同步，以及MCU软件设计，在改进方案中予以保留。

The original program in the FPGA to achieve the carrier and PN code synchronization , as well as MCU software design , wad retained in the improvement program .

基于四阶累积量的二次谱法检测DS-SS伪码周期

The Duration Estimation of the PN Sequence of DS_SS Signal Based on Fourth-order Cumulant

不同于GPS的是，对码环滤波器带来的滞后效应作了深入的分析，找到了规律，估计和补偿了滞后效应带来的误差，大幅度地提高了伪码测距精度。

After the analysis of the lag effect ′ s error of loop filter , the law is found and the error is estimated and compensated , thus to greatly improve the ranging precision .

首先研究了盲源分离技术在DS-CDMA信号侦察中的应用，提出了一种基于盲源分离的DS-CDMA信号伪码估计估计算法以及基于盲源分离技术的DS-CDMA盲多用户分离技术。

An algorithm for pseudo-code estimation of DS-CDMA signal and blind multi-user separation technology in DS-CDMA based on BSS are proposed .