ionospheric communications

См. также в других словарях:

• Communications blackout — Not to be confused with radio silence or news blackout. In telecommunications, communications blackouts are a cessation of communications or communications capability, caused by a lack of power to a communications facility or to… …   Wikipedia

• Sudden Ionospheric Disturbance — A sudden ionospheric disturbance (SID) is an abnormally high ionization/plasma density in the D region of the ionosphere caused by a solar flare. The SID results in a sudden increase in radio wave absorption that is most severe in the upper… …   Wikipedia

• Meteor burst communications — Meteor scatter propagation as used by SNOTEL Meteor burst communications (MBC), also referred to as meteor scatter communications[1], is a radio propagation mode that exploits the ionized trails of meteors during atmospheric entry to establish… …   Wikipedia

• EME (communications) — Earth Moon Earth, also known as moon bounce, is a radio communications technique which relies on the propagation of radio waves from an earth based transmitter directed via reflection from the surface of the moon back to an earth based receiver.… …   Wikipedia

• high-frequency (HF) communications — The communications carried out at frequencies between 3 and 30 MHz. HF waves are dependent mostly on reflected sky waves and are affected by ionospheric conditions. HF is used for long range communications. The lower frequencies in this range are …   Aviation dictionary

• Automatic link establishment — Automatic Link Establishment, commonly known as ALE, is the worldwide de facto standard for digitally initiating and sustaining HF (High Frequency) radio communications.cite web|title=Frequency Agile Systems in the MF/HF Bands |author=Telecom… …   Wikipedia

• Winlink — Winlink, also known as the Winlink 2000 Network, is a worldwide radio messaging system that mixes internet technology and appropriate amateur radio RF technologies. The system provides radio interconnection services including: email with… …   Wikipedia

• Maximum usable frequency — (MUF) describes, in radio transmission, using reflection from the regular ionized layers of the ionosphere, the upper frequency limit that can be used for transmission between two points at a specified time, independent of transmitter power. This …   Wikipedia

• анализ и предсказание в ионосферной связи — (МСЭ R F.1611). [http://www.iks media.ru/glossary/index.html?glossid=2400324] Тематики электросвязь, основные понятия EN ionospheric communications analysis and predictionIONCAP …   Справочник технического переводчика

• усовершенствованный анализ профиля и предсказание канала в ионосферной связи — (МСЭ R F.1611). [http://www.iks media.ru/glossary/index.html?glossid=2400324] Тематики электросвязь, основные понятия EN ionospheric communications enhanced profile analysis and circuit predictionICEPAC …   Справочник технического переводчика

• Ionosphere — The ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner …   Wikipedia