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.
该文提出一种简单、实用的PN码捕获门限自适应设置方法。
This paper proposes a simple and practical threshold adaptive estimating method for PN code acquisition.
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.
文中提出了基于直接中频采样的数字化GPS接收机码捕获电路。
A digital GPS PN code acquisition circuit based on direct IF sampling is presented.
文中研究了部分匹配滤波器在高动态卫导信号快速码捕获中的应用。
This paper explores the application of PMF in high-dynamic satellite navigation signal based on fast code acquisition.
多普勒频移补偿：大的多普勒频移会引起载波同步及伪码捕获性能的下降。
Doppler compensation techniques: the large Doppler frequency offset can case the performance degraded in PN and carrier synchronizing.
其次，介绍了几种常用的伪随机码捕获方法及不适合于P码直接快速捕获的原因。
Secondly, this thesis introduces several conventional code acquisition methods and the reason why they are not fit for direct P-code acquisition.
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.
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.
介绍了一种分段极性相关的方法，并将其应用于DS -BPS K信号的多个参数估计和伪码捕获。
A new method called subsection polar correlation is introduced and then is used in estimation of several DS-BPSK signal parameters and in PN acquisition.
对于使用阵列天线的直接序列扩谱系统，提出使用空时相关器方法实现码捕获和自适应波束形成权值捕获。
For DSSS system with antenna array, the spatial-temporal correlator (STC) is proposed for the acquisition of the PN code and adaptive beamforming weight.
本文针对新型的卫星用接收机伪码捕获的性能指标要求 ，设计了一种基于中频直接采样数字化的伪码捕获算法。
The problem of PN code acquisition is the key technique in DSSS receiver when there are narrowband interferences in the received signal.
针对大频偏下高动态直扩接收机伪码捕获时间长的问题，提出了一种新的基于FFT相位精确估计频偏的改进方法。
A new code acquisition method based on phase difference correction of FFT is presented to solve the problem of long code acquisition time in high dynamic DSSS receivers having large frequency offset.
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.
提出一种适合突发短帧模式的自适应伪码捕获方法，该方法可适用于A/D转换前加自动增益控制（AGC）的情况。
So an adaptive acquisition algorithm of PN codes for burst short frames is presented. The algorithm is suitable for the condition that AGC is applied before the ADC.
提出了一种混合多址系统伪码捕获的实现结构，并且与几种经典结果进行了性能比较，结果表明这种方法具有一定优越性。
This paper introduces the realization of a PN acquisition scheme in burst DSSS communication, which is compared with traditional classical methods and attains a better result.
在每个脚本内，捕获每个行命令的返回码。
Inside each script, capture the return code of each line command.
触发后，用于捕获实例的REST调用通过一个HTTP 202响应码返回成功消息，并将实例的状态属性更改为 “capturing”。
When triggered, the REST call to capture an instance returns success via a HTTP 202 response code. It also changes the state attribute of the instance to "capturing."
它将迭代捕获块的列表，如果发现捕获Exception的块，它会再次查找捕获块，该捕获块将捕获字节码同一范围的RuntimeException。
It iterates the list of catch blocks, and if it finds one that catches Exception, it looks again for a catch block that catches RuntimeException for the same range of bytecodes.
该码型具有和原始AMI码类似的功率谱，尽管其编码效率不高，其快速同步捕获的特性可以避免数据的丢失，提高了数据的可靠性。
This type of code has the similar power spectrum to the original AMI code, and though its code efficiency decreases, rapid synchronization will avoid losing data and increase the credibility of data.
这种相关器可以一步搜索到所有可能的码相位偏移，大大提高了捕获速度，比较好地满足了实时处理的要求。
This correlator can search all possible code shifts in one step, so decreases the acquisition time, meets the real-time requirements.
重点描述了捕获、同步以及补偿码键控（CCK）解调方法。
The baseband processor includes synchronization, acquisition, and complementary code keying (CCK) demodulation.
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.
接收机采用了匹配滤波器同步捕获法和包络相关同步跟踪环来实现伪码(PN)的同步。
A synchronous capture method of adaptation filter and related synchronous envelope tracking circle were applied to achieve synchronization of PN by receiver.
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.
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.
设计在高动态环境下工作的GPS接收机，其难点之一在于对卫星伪码的快速捕获。
One of the difficulties of designing GPS receiver working under high dynamic circumstance is to fast acquire the satellite PN code.
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.
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.
采用滑动相关捕获和延迟锁定环实现伪码的同步、捕获和跟踪；
Slip correlative taking and delay locked loop are used for the synchronization, taking, locking of PN code.
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