More is also to be spent on protecting satellite communications through encryption and frequency hopping.
美将会投入更多精力于加密和频率跳变等技术，以保护卫星通讯。
Each data packet is transmitted on a different frequency channel, following a pseudo-random hopping sequence determined by the device address of the master device.
在一个由主设备的设备地址决定的伪随机跳频序列的指引下，每一个数据包都经由不同的频率信道来传输。
FHS 1 slot Frequency Hopping Sequence.
FHS1时隙跳频序列。
In this paper, the design method of hopping frequency signals based on the technology of DDS is given.
给出了一种基于DDS技术的跳频信号源的设计方法。
According to laser working process, stabilization frequency includes mode hopping, transition stage and stabilized mode.
按照激光器的工作过程，稳频分为三个阶段：跳模、过渡阶段，模式稳定。
It is crucial to study the features of the frequency hopping signals in both time and frequency domain in order to detect and trace the FH signals.
对跳频信号的时频域进行分析是研究跳频通信，实现识别、跟踪跳频信号的重要基础。
The paper presents a new radar system based on frequency Modulated Interrupting Continuous Wave (FMICW) by exploiting the hopping frequency technique to improve the capability of HFGWR.
为提高高频地波雷达的抗干扰能力，提出了一种在线性调频中断连续波的基础上基于跳频技术的新高频地波雷达体制。
This paper introduces the characteristics of hopping frequency technology and the utilization of baseband and RF hopping frequency technology.
文中阐述了跳频技术的特点及基带和射频跳频技术的具体使用方法。
Through the operation of confusion and slot number mapping, a frequency hopping sequence can be produced with fine uniformity and less-than-512 arbitrary slot number.
该方法通过混淆运算、频隙映射的方式产生出均匀性好、可用频隙数小于512的任意频隙跳频序列。
Meanwhile, synchronization is also the difficulty of the development of FH system, which needs supplicated design especially in the fast frequency hopping (FFH).
同时跳频同步也是跳频通信系统开发的难点，特别在高跳速工作时实现同步捕获和跟踪需要精心设计方案。
The technology of DDS has many values, such as the speed of hopping frequency is very high, the resolving power of frequency is also high.
这种直接数字式频率合成技术(DDS)具有频率值转换速度快、频率值分辨率高、控制频率的相位值连续等优点。
Link quality analysis (LQA) is a key measurement process in adaptive frequency hopping (AFH) communication systems and results in adaptive frequency and power control.
信道质量评估是自适应跳频通信的关键技术，其实时评估结果为自适应频率控制和自适应功率控制提供依据。
Some technique problems in fast frequency hopping synthesis are solved by making use of a programmable time division-fractional division PLL.
该合成器采用程控时分复用小数分频锁相技术，解决了快速跳频频率合成中的诸多固难。
An adaptive acquisition strategy for slow frequency hopping spread spectrum system is proposed.
提出了一种应用于跳频扩频系统的自适应捕获策略。
Hopping frequency (FH) communication technology is the important part of spread spectrum communication, which is widely applied in anti-jamming communication.
跳频技术是扩频通信中的一种抗干扰的实用技术。
The zero-crossings of the AC voltage and digital frequency synthesizer are used in solving the two main problems in frequency hopping system-synchronization and fast frequency synthesizing.
利用电力系统三相交流电压过零点和高速数字频率合成器解决了跳频系统中同步和快速频率合成的两个关键问题。
Frequency hopping technology has the strong anti jamming ability in the short distance communication field.
跳频技术在短距离通信领域内具有很强的抗干扰能力。
Frequency hopping communication is an effective method for secret communication, and its key step is synchronization.
跳频通信是一种有效的保密通信方式，其关键在于使收发双方保持同步。
Frequency hopping technology has served in all kinds of communication systems with its excellent interference resistance ability, especially in short wave communication system.
跳频通信技术因其具有良好的抗干扰能力而被广泛应用于各类通信系统中，尤其是短波通信中。
Frequency hopping is the key technology used to suppress interference in Bluetooth system.
跳频是蓝牙使用的抑制干扰的关键技术。
Frequency hopping communication is a kind of communication system with strong anti-jamming capability.
跳频通信是一种具有较强抗干扰能力的通信体制。
Basing on development trend of short wave frequency hopping radio, this paper analyses some key techniques about the new type short wave digital frequency hopping radio.
本文根据短波跳频电台的发展趋势，重点分析了研制新型短波数字跳频电台所涉及的若干关键技术问题。
The properties of frequency hopping sequences have a decisive impact on the performance of frequency hopping communication systems.
跳频序列的性能对跳频通信系统的性能有着决定性的影响。
For the good antijamming performance of the adaptive frequency hopping system, the design project of the (adaptive) frequency hopping satellite communication system is put forward in this paper.
鉴于自适应跳频系统的良好抗干扰性能，提出了一种自适应跳频卫星通信系统的设计方案。
The results shown that the MAI performance of NHZ quasi-synchronous system used NHZ sequences outperforms the asynchronous system employing random hopping frequency sequences.
研究结果表明，采用NHZ跳频序列的准同步跳频通信系统的MAI性能优于采用随机跳频序列的异步跳频通信系统。
The paper introduces the composition and the operation mode of frequency hopping (FH) communication system and the design requirement of frequency hopping synthesizer.
介绍了跳频通信系统的基本组成、工作方式以及跳频通信系统中跳频综合器的设计要求。
The frequency hopping system based on software radio, DSP is used to generate quasi-stochastic sequence and control the output frequency of DDS to construct required hopping maps.
跳频方案采用软件无线电技术，采用DSP作为伪码发生器，控制DDS输出频率，得到相应的跳频图案。
Tuner will be able to track the frequency-hopping radio frequency.
调谐器可以追踪跳频无线电频率。
Tuner will be able to track the frequency-hopping radio frequency.
调谐器可以追踪跳频无线电频率。
应用推荐