跳频通信

为了提高跳频通信的抗干扰性能，将低密度奇偶校验（LDPC）码与跳频通信相结合。

Frequency-hopping communication was combined with the Low-Density Parity-Check ( LDPC ) code to improve anti-jamming performance of frequency hopping communications .

其次，重点研究了针对差分跳频通信的基于FFT的并行搜索的捕获技术与两种典型的跟踪算法。

Result shows that DFH sequences have better randomicity and uniformity after disturbed . Secondly , parallel-search capturing technology of Differential Frequency Hopping in communications and two typical tracking algorithm are mainly studied .

跳频通信系统中频率合成器的SYSTEMVIEW设计与仿真

Design and Simulation of the Frequency Synthesizer Used in Frequency Hopping System Based on System View

基于高速DSP的跳频通信系统设计

Design of Frequency Hopping Communication System Based on High-speed DSP

频率转移函数（又称G函数）的设计是差分跳频通信系统设计的核心。

The design of the G function ( GF ) is the core of the DFH system .

OFDM在跳频通信系统中的同步问题研究

The Synchronization Problem Research of OFDM in FH Communication System

基于DSP的差分跳频通信系统实时选频技术的研究与实现

Research and Implementation of Real Time Frequency Selection of Differential Frequency Hopping Communication System Based on DSP

水声跳频通信系统中Turbo性能研究

Performance of Turbo Code in Frequency Hopping Communication Systems

跳频通信中变通带锁相环路（PLL）的研究

Research of Changeable Frequency-Band PLL in Frequency Hopping ( FH ) Communication

基于HFC的CATV网络实现宽带IP网的跳频通信技术

The Technology of Jump-frequency Communication for Developing Wide Band IP Network Based on HFC CATV Network

CHESS系统的跳频通信技术

The Technique of Frequency Hopping Communication on CHESS

VHF跳频通信系统功率放大器的研制

Development of a Power Amplifier for VHF Frequency-hopping Communication System

PLL两点调制在跳频通信GMSK调制源中的应用

Application of PLL two-point modulation in SFH-GMSK modulation design

GMSK在跳频通信中的应用及其性能分析

Application and performance analysis of GMSK modulation in frequency-hopping communication

跳频通信系统具有较强的抗干扰能力；OFDM具有较高的频谱利用率；

The paper presents the FH-OFDM system with the joint of the stronger ability against interference in frequency-hopped system and greater spectral efficiency in OFDM system .

基于GMSK调制慢跳频通信系统的软件无线电实现结构及性能分析

Software radio structure of slow frequency-hopping system based on GMSK modulation and its performance analysis

现代雷达及跳频通信系统对微波捷变频频综提出了越来越高的要求，DDS和PLL技术是当今主要的捷变频信号合成方法。

A microwave frequency synthesizer with high hopping-frequency speed is proposed in this paper , which is based on the DDS and PLL technology .

本文主要讨论了DDS基本工作原理和DDS+PLL频率合成器在跳频通信中的应用。

In this paper , the author has discussed the basic principle of DDS and the application of DDS + PLL frequency-synthesizer in frequency-hopping communication .

具有优良相关性，大线性复杂度，平衡性，长周期的伪随机序列广泛应用于CDMA系统，扩跳频通信系统。

Pseudo-random sequences with optimal properties such as correlation , high linear spans , balance and long period are widely used in CDMA system , spread spectrum and hopping communication systems .

无线跳频通信中的多进制CPFSK解调技术多数位的十进制加法器

Multi-CPFSK Demodulation Technology in Hopping Frequency Wireless Communication ; multiple-digit decimal adder

利用MSP430单片机控制DDS芯片来实现快速跳频通信信号源，具有简单方便、低成本、超低功耗的特点，可以直接产生200MHz以下的跳频信号。

Using MSP430 microcontroller to control DDS chip , we realize a signal source of fast-speed hopping frequency communication which is characterized by simplicity , low cost and low power lass .

所以，跳频通信非常适合无中心控制的网络，如军事跳频通信网络、边缘地区紧急Ad-hoc网络等。

Therefore , Frequency hopping communication is very suit for peer to peer networks without power control , such as frequency hopping communication for military 、 urgency Ad-hoc network for edge region .

JTIDS信号采用了跳频通信体制，跳频周期的差异性反映了JTIDS不同用户间的细微差异。

Frequency hopping communication system is adopted in JTIDS signal , and the differences of frequency hopping parameters reflect fine differences of different JTIDS users .

着重介绍了Reed-Solomon码在跳频通信系统中的应用。分析了（n，b）R-S码的互相关，自相关特性。

In this paper emphasis is laid on the application of Reed-Solomon Codes in frequency hopping communication systems , and analysis is made of the characteristics of the auto-and cross-correction of ( n , b ) R-S code .

阐述了PLL两点调制的基本原理，并在ADS软件环境下，验证了两点调制在慢跳频通信GMSK调制源设计中应用的可行性。

The basic principle of PLL two-point modulation is expatiated , and it is proved in the software ADS that it 's economical and effective to use two-point modulation in the design of SFH-GMSK modulation .

本文引入跳频通信地址编码理论，结合无线电引信的具体特征，提出了适用于无线电引信的频率捷变序列的选择原则，并构造了基于RS码的宽间隔频率捷变序列族。

According to the theory of address coding in the hopping-frequency communication , the paper presents the principle of selecting the frequency agility sequence which fit to the radio fuze and constructs the frequency agility sequence family based on the RS codes .

随后利用Matlab/Simulink搭建了跳频通信系统的仿真模型，对GMSK调制解调算法以及同步方案进行了仿真。

Subsequently , it is used Matlab / Simulink to set a simulation model of frequency-hopping communication system to simulate the GMSK modulation , demodulation algorithm and improved synchronization scheme .

分析了跳频通信系统的工作原理并介绍了其在实际中的应用，针对AWGN和瑞利信道的特性，对强干扰跳频通信中的Turbo码进行了相应的性能仿真；

The principle and applications of Frequency-Hopped system are discussed . According to the characteristics of AWGN and Rayleigh fading channel , and combining with the Frequency-Hopped system property , the performance of turbo codes is shown .

研究表明，该系统满足水声跳频通信对鉴频速度和分辨率的要求，并已应用于水下E-mail传输系统中。

Because the traditional executing flow is not efficient enough , four optimizing methods are illustrated . As a result , this system can meet the speed and resolution requirement of underwater frequency hopping communication . It is also applied to underwater E-mail transportation project .

分析了宽带IP网的发展现状和用户接入的问题，提出了基于HFC（光纤电缆混合）的模拟CATV广播网实现宽带IP网的跳频通信设计方案，对一些关键技术作了详细的叙述。

This paper analyses the developing status of wide band IP network and the problems of linking terminal users , presents a plan of wide band IP network using jump frequency communication based on HFC CATV network . This paper also details some key technologies .