研究了用于低轨卫星通信的直接序列扩频系统的码捕获技术。
It is studied that the code acquisition technology of direct sequence spread spectrum system in LEO satellite communication.
提出了一种用于直接扩频通信系统（DSSS）快速捕获，新型组合声表子波（SAW）卷积器序列搜索码捕获方案。
A new combined Surface Acoustic Wave (SAW) convolver, or a serial searching code acquisition scheme for direct sequence spreading spectrum (DSSS) communication system is presented.
文中提出了一种基于FPGA的扩频信号快速滑动相关捕获方法，来解决低信噪比条件下长伪码序列的捕获问题。
The paper presents a spread spectrum signal acquisition speed sliding correlation method base on FPGA, to address the problem of capture long PN code under low SNR.
讨论了高动态、低信噪比、长伪码序列扩频信号的伪码捕获、跟踪、载波跟踪与数据解调方法。
The paper discusses the acquisition and tracking of the PN code and the tracking of the carrier in high dynamic range , low SNR and long PN code.
采用了二维联合搜索的快速算法，同时捕获扩频信号的载频和码起点。
Using the planar search, code start point and carrier frequency were reached at the same time.
针对具有大多普勒偏移的直接序列扩频信号捕获问题，提出一种基于快速傅里叶变换(FFT)的多普勒和伪码分别并行搜索的捕获新方法。
Aiming at the acquisition problem of direct sequence spread-spectrum (DSSS) signals with large Doppler offset, a new method based on fast Fourier transform (FFT) is proposed.
讨论一种用于某无人机直序扩频通信测控系统的PN码捕获方案。
The design of the PN code acquisition of the Direct Sequence Spread Spectrum(DSSS) system for a Unmanned Aerial Vehicle(UAV) TT&C System is described in this paper.
针对扩频通信系统中的伪码同步问题，分析了基于匹配滤波捕获跟踪算法的伪码数字化同步方案。
In consideration of the synchronization of PN code in spread spectrum communication system, a acquisition and track scheme of PN code based on the theory of match filter is analyzed.
对于任何一种扩频通信pN码捕获系统来说，捕获性能在很大程度上取决于检测概率和虚警概率。
For any PN code acquisition system in spread spectrum communications, the acquisition performance is largely dependent on the probabilities of detection and false alarm.
方案中提出了：相关搜索、FFT检测信号载波的方法，解决了低信噪比、大频差条件下扩频码的同步捕获难题；
The method was Correlate search and FFT carrier detection, which could solve the problem of the capture of the spread spectrum code under the condition of low SNR and big frequency offset.
扩频码的捕获是扩频通信的前提。
Capturing spread spectrum sequence is the premise of spread spectrum communication.
捕获技术是跳码扩频通信系统的关键技术之一，所以我们有必要研究跳码扩频通信系统合理、可行的捕获方法。
Acquisition technology is one of the key technologies of CH-DSSS system, so we need to study reasonable and feasible acquisition methods of CH-DSSS communication system.
捕获技术是跳码扩频通信系统的关键技术之一，所以我们有必要研究跳码扩频通信系统合理、可行的捕获方法。
Acquisition technology is one of the key technologies of CH-DSSS system, so we need to study reasonable and feasible acquisition methods of CH-DSSS communication system.
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