Radio
frequency animations and java applets |
AM Detector |
Animations of the 2D
propagation of electromagnetic waves in the presence of different distributions
of refractive index This page contains animations of numerical solutions to
Maxwell's equations in a 2D domain (using the finite-difference time-domain
method with a staggered "Yee lattice"). A wave is excited at the bottom of the
domain and propagates upwards |
Communication
engineering applets
to understanding some of the principles of telecommunication engineering |
Electromagnetic field animations |
Electromagnetic theory antennas, polarization, standing wave, reflection and
transmission, radiation from the source, diffraction by a half-infinite ground
plane, microwave circuits, ..., a
tip |
Electromagnetic
oscillating circuit
this simulation deals with an electromagnetic oscillating circuit, consisting of a capacitor and an inductor |
How Radio Communication
Works How Radio Communication Works |
Ionization Factors
Because there are fewer hours of daylight during autumn and winter, less
radiation reaches the D and E layers. Lower frequencies pass easily through
these weakly ionized The process in which electrons are stripped from atoms and
produce electrically charged particles. layers. Therefore, signals arriving at
the F layer The ionospheric layer that is most responsible for long-haul HF
radio communications. are stronger and are reflected over greater distances |
IONOSHERE |
Introduction to HF Technology |
Mobile Computing Applets
CDMA, IrDA, Bluetooth-Scatternet, DSDV Routing, DSR Routing, OLSR Routing,
Link-Reversal |
Morse |
Physics, electromagnetism and
quantum mechanics details the findings of Larry Spring in areas such as
physics, electromagnetism and quantum mechanics |
Phase Locked
Loop (PLL) Phase locked loop (PLL) is used for synchronous demodulation of
AM signals with suppressed carrier or little carrier |
Propagation loss models used in cellular system planning these applets plot the graphs of path loss (dB)
against distance (km) on a grid |
Sky waves
Sky waves Radio signals that are bent back to Earth by the ionosphere. make
beyond line-of-sight communications possible. At certain frequencies, radio
waves are refracted, or bent, returning to Earth hundreds or thousands of miles
away. Depending on frequency The number of cycles a radio wave completes in a
given period of time., time of day, and atmospheric conditions, a signal can
bounce several times before reaching a receiver |
T-network
tuner simulator a simulator for the popular, series capacitor, parallel
inductor T-network tuners, SWR |
Time and
Frequency Domains
To illustrate the Frequency Domain representation of a
single sinusoid |
Time
domain vs. frequency domain the three-dimensional plot of frequency, amplitude and time that shows the relationship between the time and
frequency domains. It does so by looking at the fundamental of a sine wave -- and up to three harmonics -- as they are formed by rotating vectors |
Tuning
a radio receiver
this tutorial demonstrates how variable capacitors are used with inductor coils in tuning circuits of radios, television sets, and a number of other
devices that must isolate electromagnetic radiation of selected frequencies |
Horizontaal |
Satellites and GPS systems
related topic: Satellite Motion and
Tracking |
Cellphone |
Earth orbit plot earth orbit plot, swf file |
EGNOS
European Geostationary Navigation Overlay Service |
J-Track Satellite
Tracking |
GPS and GLONASS Satellite Networks
GPS
and GLONASS Satellite Networks - ESSP - European Satellite |
GPS and GLONASS simulation |
GPS and
the use of satellites GPS and the use of satellites, swf file |
GPS Animation
GPS Animation, What is the Global Positioning System? |
GPS Animation
Global Positioning System (GPS) |
GPS Global Positioning System
GPS Global Positioning System Animation |
GPS Global Positioning System
GPS Global Positioning System |
GPS:
How GPS works How GPS works animation |
GPS:
How GPS works How GPS works, satellites |
GPS
Portable GPS |
GPS Satellite Display In Google Earth |
How
GPS works How GPS works, swf file |
Localisation par satellite (GPS). Global Positioning System
Localisation par
satellite (GPS). Global Positioning System |
Orbit experimenter
Basic orbital mechanics are demonstrated with this interactive simulator, which
allows the student to watch GEO, MEO, and LEO orbits or test their own launch
parameters |
Orbits GPS
Orbits GPS, swf file |
REAL TIME
SATELLITE TRACKING |
Simple satellite
tracker |
Space Communication |
Use sun or
moon to choose the best place for your satellite antenna |
Sun-Satellite Interference
Geosynchronous satellites are used for many
telecommunication and broadcast purposes. Such satellites appear to be
stationary as viewed from the ground, and are able to provide coverage over
large areas |
War with Iraq
Guided weapons swf file |
Horizontaal |
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Last updated on:
2011-01-02
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