Re: [Drip] new world record on drone show?

[Alexandre Petrescu <[e-mail]>]

Thanks for the pointer, the show is spectactular.  At 1:29 it seems to
be saying "god 2020, pamiati islavu / год 2020 памяти Иславы / Year 2020
in memory of Islava". (whoever Islava might be; might be WWII Glory
related.)

Earlier I was pointed by a similar show in China displaying Intel text.
  It might have been using less numerous drones.

The question I had to them, and now here, is again the same.

Le 08/09/2020 à 15:06, Andrei Gurtov a écrit :
> Drone shows are getting popular, each new one tries to be bigger. It
>  seems a recent one with 2198 drones in the sky over St.Petersburg 
> exceeded IBM show by a couple hundred.
> 
> Looks cool  - drones are custom made (by kids?) and keep distance of
> 3 meters.

One says 'keep distance' but are they really keeping distance, or are
they just following pre-defined paths which involve pre-defined distances?

Keeping the distance constant is a technology well known in early
self-driving automobiles; some call it 'adaptive cruise-control' but
there are more names.  It involves using a bouncing signal, such as a
radar, sonar, lidar, camera, on each automobile; and dynamically adapt
the speed accordingly; more advanced alternatives involve adapting the
steering and use of communication system rather than bouncing signal.

On the contrary, following a pre-defined path is also known in early
self-driving automobiles.  Typically, the first demos of self-parking
automobiles were pre-defined paths (nothing automated, nothing
adaptive).  But that does not involve bouncing signals nor communication
systems.  It might use extensively the GNSS (GPS is some cases) but it
might as well not use it at all: just follow a pre-planned path of
points which are defined by a set of steering accel/brak instructions.

I think most such drone demos as in this youtube video (I suppose, I
didnt verify with my own hands) are following pre-planned paths, and
they dont dynamically 'keep distance'.

I am saying this because I work on a concept called 'flightooning' which
is flying in formation for drones, akin to platooning of automobiles.
And in that 'floghtooning' we say we do more than 'drone swarming'.

> 
> https://www.youtube.com/watch?v=agSnetEXTvk
> 
> Bandwidth requirements must be huge for CC, also positioning is more
>  precise than GNSS would allow?

Yes, again, let us make sure these are not pre-defined paths.

If we determine that these demos are not pre-defined paths, then we can
evaluate the way this bandwidth is required, how GNSS is involved (if at
all) and more.  That could be discussed, there are many arguments.

Let us not be blinded by the spectacular part of it.

> Interesting how drone ID and cybersecurity issues were handled.

True.

I strongly doubt authorities in their right minds could allow 3000
drones in the air to depend on an occasionall wifi/gps cracker presence
around messing with jamming devices.  Or maybe I am too afraid that
things fall from the sky on my head :-)

(or with laser pointers for that matter, to blind the potential lidars)

Alex

> 
> Andrei
> 
> 
>