[HOT] Identification of Communication towers

Mikel Maron mikel.maron at gmail.com
Sun Mar 15 13:12:03 UTC 2015


We could make a quick tracing guide for these towers. Just need a few clipped screenshots of the imagery, and help text. 
Would put it together in something like this: http://hotosm.github.io/tracing-guides/guide/kulna.htmlhttp://hotosm.github.io/tracing-guides/
 -Mikel
* Mikel Maron * +14152835207 @mikel s:mikelmaron 


     On Sunday, March 15, 2015 9:03 AM, Blake Girardot <bgirardot at gmail.com> wrote:
   
 

 
Hi Martin,

These are challenging to spot and hard to tag correctly without local 
knowledge I just discovered.

http://wiki.openstreetmap.org/wiki/Tag:man_made%3Dcommunications_tower

I usually find towers by seeing the shadow they cast, that is the big 
indicator to me.

Here are a few examples in the region:

https://www.openstreetmap.org/#map=19/-21.90198/166.072485

If you look very carefully at the shadow you can see the microwave 
transceiver drums in the shadow. I would guess that is what helped the 
person identify this one as a "communications" tower specifically.

----------------------------

https://www.openstreetmap.org/#map=19/-20.748846/167.262194

That one again, shows the shadow being a pretty big factor. And it also 
show a typical service road and pad. I do not know how the mapper knew 
it was a communications tower.

------------------------------

https://www.openstreetmap.org/#map=19/14.977132/120.52743

Shadow and microwave drums visible

-----------------------------------

https://www.openstreetmap.org/#map=20/15.011183/120.532604

Shadow and service area fenced off.

----------------------------------

https://www.openstreetmap.org/#map=19/15.097711/120.611481

A nice big TV transmission tower.


I hope those help!

Cheers,
Blake



On 3/15/2015 11:37 AM, spatialbits wrote:
> Hi hotties,
>
> as part of tasks #944/943 (Vanuatu) mapping of Communication towers is
> requested.
> Could someone point me to an example in the imagery (e.g. lat/lon), so I
> get an idea on what to look for.
>
> Thanks.
>
> Martin
>
> _______________________________________________
> HOT mailing list
> HOT at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/hot
>

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