参考:https://en.wikipedia.org/wiki/Frequency-hopping_spread_spectrum 简介 跳频扩频(Frequency-hopping spread spectrum) (FHSS) 是一种通过在占据大频谱带的多个频率之间快速改变载波频率来传输无线电信号的方法。这些变化由发射器和接收器都知道的代码控制。FHSS 用于避免干扰、防止窃听和实现码分多址(code-divisio...
use its uniquefrequency hopping spread spectrum(FHSS) probe signal radio transmission technology [...] renishaw.com.br renishaw.com.br 雷尼绍公司推出了使用其创新的跳频(FHSS) 无线电传输技术的全新测头系统,可在各种数控机床上实现自动工件找正和序中测量,在业界又掀起了一轮新的浪潮。
There are two techniques to spread the bandwidth: frequency hopping spread spectrum (FHSS) and direct sequence spread spectrum (DSSS). in Frequency-Hopping Spread Spectrum (FHSS), different modulation frequencies are used in different periods of time. The signal is broadcast over a ...
ホーム 質問する 回答 閲覧 MATLAB に関する FAQ その他 frequency hopping spread spectrumフォロー 7 ビュー (過去 30 日間) Ambreen 2013 年 4 月 30 日 投票 0 リンク 翻訳 回答済み: Ngeno K 2014 年 7 月 12 日 how to generate an FHSS sequence for 10 users? I have to build ...
Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver. It is utilized as a multiple access method in the frequency-hopping code division ...
Multi-channel FrequencyHopping Spread Spectrum Signaling Using Code MaryFrequency Shift Keying. Sahu P P,,Mahipal Singh. Computers&Electrical En-gineering . 2008Sahu P P,,Mahipal Singh.Multi-channel FrequencyHopping Spread Spectrum Signaling Using Code MaryFrequency Shift Keying.Computers&Electrical En-...
Frequency-hopping spread spectrum (FHSS) is repeated switching of carrier frequency during radio transmission to reduce interference and avoid interception.
摘要: A solution for the precise and cost-effective generation of frequency-hopping spread-spectrum waveforms using digital frequency synthesis based on read-only-memories (ROM, PROM, EPROM) is studied. ...关键词: Spread spectrum communication Digital modulation Frequency modulation Prototypes Frequency...
跳频展频(Frequency-hopping spread spectrum, FHSS)是展频技术的一种;经由载波快速在不同频率中切换,并在接收与发射端使用一种伪随机(PseudoRandom)的过程。如果频道序列的变换对於潜在对手是未知的,跳频讯号可以非常有效抵御蓄意的干扰。军用无线电使用加密技术,在共享於发送端与接收端之间的传输金钥(Transmission ...
The broad-band noise performance of a spread spectrum system with frequency hopping and sequentially balanced modulation was analyzed in Part I of this paper. Here, the analysis is extended to include operation In jamming environments and in specular multipath. Bit-error probability and ranging accura...