radio wave propagation 射频波传播,无线电波传播 radio wave propagation prediction 无线电波传播预测 radio wave absorbing material 无线电波吸收材料 radio spectrum 射电谱,射频频谱 相似单词 spectrum n. 1.光谱 2.声谱;波谱;频谱 3.范围,系列 radio n. 1.收音机,无线电设备 2.无线电广播台 3.无线电...
chapter 1 - radio wave propagation and the frequency spectrums for terrestrial global communications and navigation causes major problems, particularly in the arLaurie Tetley IEng FIEIEPhD MSc DipEE CEng MIEE David CalcuttElectronic Navigation Systems (Third Edition)...
Overview of radio waves, including discussion of frequency and amplitude modulation.(more)See all videos for this article radio wave, wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves. The wavelengths of radio waves range from thousands of metres to 30 cm. ...
HF, VHF and UHF bands include FM radio, broadcast television sound, public service radio, cellphones and GPS (global positioning system). These bands typically use "frequency modulation" (FM) to encode, or impress, an audio or data signal onto the carrier wave. In frequency modulation, the ...
radio spectrum spectrum- an ordered array of the components of an emission or wave electromagnetic spectrum- the entire frequency range of electromagnetic waves radio emission,radio radiation,radio wave- an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m ...
Abstract sound waves oscillating. Frequency spectrum on dark background radio wave.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城
(c) Frequency interference in wireless networking The IEEE 802.11b standard uses the unlicensed radio-wave spectrum that is commonly shared by a variety of consumer devices such as baby monitors and cameras, 2.4 GHz cordless phones, microwave ovens, and Bluetooth-enabled devices. This can impact ...
Characteristic analysis of radio wave transmitting on three different grounds; 无线电波在三种不同土壤上的传播特性分析 更多例句>> 4) radio waves 无线电波 1. Ionospheric heating by powerful high-frequency radio waves; 大功率高频无线电波加热电离层 更多例句>> 5) radiobeam 无线电电波6...
1. A radio frequency spectrum analyzer including a cathode ray tube having a fluorescent screen, an electron gun adapted to produce a beam of electrons and project said beam at said screen, a vertical deflection means comprising a frequency dispersive electromagnetic wave conductor with its axis of...
A radio wave is an electromagnetic wave propagated by an antenna. Radio waves have different frequencies, and by tuning a radio receiver to a specific frequency you can pick up a specific signal. In the United States, the FCC (Federal Communications Commission) decides who is able to use whic...