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UAVTracking / UAVTrackingProtocol

An open radio protocol for transmitting UAV flight data in real time.
https://xkcd.com/927/
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Sizing #24

Open darekzbik opened 6 years ago

darekzbik commented 6 years ago

Is there any assumptions related to number of UAVs which potentially will be involved in the system?

Are there any limitations related to maximum altitude (probably expressed in AGL) or speed of UAV?

Are there any places where high number of drones will be expected? (area size, number of UAV)

Answers for this questions can help us check if currently proposed packet size and currently assumed radio band is sufficient for this protocol.

pjalocha commented 6 years ago

Are high altitude balloons considered drones under this regulation ? I have heard recent news about funeral services "in space" done with such balloons - we may thus expect certain number of these flying on a regular basis.

Are amateur rockets considered drones under this law ? These can reach quite some speeds and altitudes... likely speeds higher than 1 MACH.

darekzbik commented 6 years ago

Again we can not fit all in a single protocol. Current law does not allow you to go faster 250kt (VFR regulation) and mentioned balloons/rockets need to ATC clearance any way - so ATC can simply request MODE-S transponder or some space will be closed for other traffic.

On Sun, Oct 15, 2017 at 2:43 PM, pjalocha notifications@github.com wrote:

Are high altitude balloons considered drones under this regulation ? I have heard recent news about funeral services "in space" done with such balloons - we may thus expect certain number of these flying on a regular basis.

Are amateur rockets considered drones under this law ? These can reach quite some speeds and altitudes... likely speeds higher than 1 MACH.

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optimaltracking commented 6 years ago

The range obtained with the RF technology (constrained by OGN/FLARM technology compatibility) is not high. When a drone is below 100 m, maximal range is 500 to 1000 m. So we have considered that 100 UAV in the range of a receiver is a maximum.

darekzbik commented 6 years ago

Did you consider different communication method at low altitudes? Bellow 100m GSM should be reliable enough and probably not big problem for GSM network.
With 1000m range it is rather not possible to cover whole city with receivers and I guess that intention is also to monitor traffic above cities.

pjalocha commented 6 years ago

A well placed receiver (on a high location) could cover good part of a city to low altitudes, although as we know from practical operation such recievr would need extra precautions like good RF filter.

pjalocha commented 6 years ago

There are techniques which can improve the coverage. if we imagine a city with say 5 receivers placed at good (high) locations, the signals from those receivers can be send to a common processing server and there combined to gain higher SNR and the timing can be compared to detect fake signals. Similar setup can be done around an airport.