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Tracking the ARBONET Flights


  • APRS: Tracking from the comfort of your home, vehicle or on foot:

Did you know you might be able to track ARBONET 3 flights from your home computer? ARBONET flights are equipped with APRS. APRS is a messaging network, based on systems exchanging packets of data. This data can be position information, email, weather, frequencies and much, much more.

Two systems on the ARBONET flights send out APRS position information, including altitude. However, ARBONET data may not show up until we are actively in flight and the payloads are being heard by other radios feeding this data to the Internet via "Digipeaters".  The APRS coverage in the area we fly is sparce, but is used by local ground chase teams to intercept the landing of the ARBONET payloads.

This means the links below may not work for you until well into the flight, where we are high enough to be heard a long distance away. There are no active digipeaters near where we fly, so it could be that we are not heard at all during the flight with the exception of ground tracking mobiles using APRS to track the payloads for recovery.

But, you can give it a try! If you do get a map showing the ARBONET payloads, you might need to hit "refresh" on your browser to get the latest position report.

To track the progress of the ARBONET flight, here are a few experimental links to try:


The following two links should provide a historical bread crumb trail of where we have been during the flight:

ARBONET 3, Payload 1:

ARBONET 3, Payloads 2,3,4:



The following two links should provide a glimpse of where we presently are during the flight:


ARBONET 3, Payload 1

ARBONET 3, Payloads 2,3,4


RDF : Radio Direction Finding:

  • Locating payloads via Radio Direction Finding methods can be a blast! Using RDF equipment, teams or individuals can locate the payloads via the payload's on-board transmitters. These transmitters, which include APRS, Voice Synthesized Beacon, Tones generated, Morse code on CW can all be used for location orientation. Using directional antennas and / or Doppler effect detectors, a direction to the transmitter can be plotted. Then, by moving your location and again plotting the direction to the transmitter, intersecting lines will provide triangulation to the transmitter, which in turn can be used to pin-point the exact location on a map.

SIMULATION:

Simulation tools such as Balloon Track are used to approximate the flight and landing zone of the payloads. From weather data, we can simulate the wind's effect on the ARBONET vehicle, which consists of the balloon and several payloads. The vehicle flight is influenced and at the complete mercy of the wind. During the ascent, the winds change directions at different altitudes, so the effect of the wind is also changed in the simulation to reflect the amount of time and influence of the relative direction of the wind at any point in time. If the weather data is accurate, the entire flight should fairly represent the simulation of the vehicle. While in the descent phase, the winds again influence the vehicle flight and the landing zone can be plotted on a map. Knowning the ascent rate and descent rate, the time aloft can be determined.








|WELCOME| |ARBONET FLIGHT SAFETY| |ARBONET FLIGHTS| |ARBONET NEWS| |PHOTOS of PAST FLIGHTS| |ARBONET TRACKING| |Preflight| |Directions to Clarksville Airport| |ARBONET PRESS| |Click Here to submit QSL Reception Reports| |Internet Links|