A digital GPS PN code acquisition circuit based on direct IF sampling is presented.
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。
This paper proposes a simple and practical threshold adaptive estimating method for PN code acquisition.
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 explores the application of PMF in high-dynamic satellite navigation signal based on fast code acquisition.
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。
The analysis result indicates that the method can reduce the resource consume to fulfill the direct P code acquisition.
分析表明，该方案能以较低的资源完成P码的直接捕获。
The problem of PN code acquisition is the key technique in DSSS receiver when there are narrowband interferences in the received signal.
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。
Secondly, this thesis introduces several conventional code acquisition methods and the reason why they are not fit for direct P-code acquisition.
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。
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.
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。
For any PN code acquisition system in spread spectrum communications, the acquisition performance is largely dependent on the probabilities of detection and false alarm.
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。
According to the result of the analysis, the designed digital code acquisition system has higher probability of detection, lower probability of false alarm and shorter average acquisition time.
分析表明，本文提出的伪码序列捕获系统具有检测概率高、虚警概率低和平均捕获时间短的特点。
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.
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.
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。
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