This video provides a brief technical introduction to tropospheric ducting and explains how tropospheric ducting can enable long-distance propagation at VHF and higher frequencies.
Timeline:
00:00 Introduction
00:17 About the troposphere
01:04 Refractive index of the troposphere
01:50 About temperature inversions
02:32 About tropospheric ducting
03:20 Ducts and frequency
04:01 Where and when ducts form
04:30 Ducting and weather
05:10 Two types of tropospheric ducts
05:26 Surface ducts
06:06 Elevated ducts
06:40 Propagation along ducts
07:07 Tropospheric ducting or sporadic E?
08:07 Summary
Understanding Tropospheric Ducting
Теги
RohdeRohde & SchwarzR&Sintroductionexplanationoverviewtutoriallessonunderstandingfundamentalsbasics testtestingmeasurementmeasuringtest and measurementsT&MRFradio frequencyVHFpropagationtropospheretropospheric ductingductductingtropoweatherUVultravioletdiffractionline of sightradio horizonvisual horizonrefractivityrefractive indexbendbendingpressuretemperaturehumiditytemperature inversioninversionwaveguidewatercoastcoastalleak
