Advanced search  
Pages: [1]   Go Down

Author Topic: Drone to be trialed for Mountain Rescue  (Read 7412 times)

Chris Johnson

  • T5
  • *****
  • Posts: 1069
  • Trying to give a fig but would settle for $100,000
Drone to be trialed for Mountain Rescue
« on: July 17, 2013, 04:52:53 AM »

Found this on the web so thought I'd share aerosee project

Could TIGHAR use this to further Map NIKU? (appart from Kite Photography)
Logged

Ric Gillespie

  • Executive Director
  • Administrator
  • *
  • Posts: 5521
  • "Do not try. Do or do not. There is no try" Yoda
Re: Drone to be trialed for Mountain Rescue
« Reply #1 on: July 17, 2013, 05:23:15 AM »

We could undoubtedly use drones to get more low-level aerial photography of the island but that's only useful in open areas. Much of the island has a heavy over-story of vegetation (scaevola, coconut palms, pandanus, buka, etc).  Searching those areas takes boots on the ground.
Logged

Matt Revington

  • TIGHAR member
  • *
  • Posts: 294
  • member #4155
Re: Drone to be trialed for Mountain Rescue
« Reply #2 on: July 17, 2013, 08:17:29 AM »

There is an aerial imaging technique used by some archaeologists that sees through vegetation/ground cover to some extent

http://www.forestry.gov.uk/fr/INFD-6FKHFE

I assume it isn't cheap to rent and requires a great deal of expertise to operate and interpret the data
Logged

Monty Fowler

  • T5
  • *****
  • Posts: 1078
  • "The real answer is always the right answer."
Re: Drone to be trialed for Mountain Rescue
« Reply #3 on: July 17, 2013, 10:15:30 AM »

I got nominally excited about that new technology until I read this part:

What are the limitations?
This technique is not necessarily the answer to every archaeologist’s dreams, as it does have limitations:

•There are many laser configuration and flight variables that can alter the resolution of the survey. All of these must be considered prior to commissioning a survey to ensure optimum conditions for the area under investigation.
•Despite surveying in winter, not all canopy and understory vegetation types are equally porous to the laser energy and where little light naturally penetrates to the forest floor a LiDAR survey may be of little use.
•Whilst under optimum conditions the method will show more discrete features such as charcoal platforms, it is inevitable that not all features of similar or smaller size will be discernible in the resulting images.
•Vegetation removal and hillshading are necessary parts of the data processing. However, both can either remove or hide features of interest. An understanding of the processes involved in producing these models and images are therefore essential.
•LiDAR does not distinguish between modern, archaeological or vegetation produced features in the hillshaded images. Features of potential archaeological interest can result from modern drain clearance, woodland thinning residue left by a roadside or bracken which has died over winter but when draped over a wire fence resembles an earth bank. Whilst it may be a long-term project, some ground-truthing will be necessary.

Bummer - sounds like it might work just fine if everything is perfect. As TIGHAR has found time and again when trying to deploy new technology at Niku, the island has an astonishingly ability to take "This worked fine when we tried it out at home" to "What the ...???" or "What do you mean we don't have a spare part for that?"

I'm not saying let's not consider it; any tool in the toolbox has the potential to be useful. What I am saying is the use and deployment of any new and untried technology in the unforgiving atmosphere of Nikumaroro has to be weighed very carefully when considering what else absolutely needs to be taken on the expedition.

LTM, who always weighs it before he totes it,
Monty Fowler, TIGHAR No. 2189 CER
Ex-TIGHAR member No. 2189 E C R SP, 1998-2016
 
Logged

Ric Gillespie

  • Executive Director
  • Administrator
  • *
  • Posts: 5521
  • "Do not try. Do or do not. There is no try" Yoda
Re: Drone to be trialed for Mountain Rescue
« Reply #4 on: July 17, 2013, 10:27:55 AM »

I don't think LIDAR is practical for Niku but I've been eyeing it as a possible way to search the open muskeg of Newfoundland for a certain engine.
Logged

Matt Revington

  • TIGHAR member
  • *
  • Posts: 294
  • member #4155
Re: Drone to be trialed for Mountain Rescue
« Reply #5 on: July 17, 2013, 10:29:32 AM »

I agree Monty, I just got curious when Ric mentioned that the value of aerial photography was limited by ground cover so I did a quick google search to see if there was technology out there that could penetrate it and this was the first good one I came up with.  All of the cases on that page seem to be English woodlands which are very different than the vegetation and soil than that found on Niku.  But if this technology exists there may be other more robust ones out there
Logged

richie conroy

  • T5
  • *****
  • Posts: 1412
Re: Drone to be trialed for Mountain Rescue
« Reply #6 on: July 23, 2013, 04:09:52 PM »

The plane in attached image is simillar to the white bird

But is this one made of wood or metal ?
We are an echo of the past


Member# 416
 
Logged

Dan Swift

  • TIGHAR member
  • *
  • Posts: 347
Re: Drone to be trialed for Mountain Rescue
« Reply #7 on: July 23, 2013, 07:33:36 PM »

Looks like a Cessna tail and it has a rear window....so it has to be 1962 or after depending on the model.   182 and 210 followed by the 172 and 150 later. 
TIGHAR Member #4154
 
Logged
Pages: [1]   Go Up
 

Copyright 2019 by TIGHAR, a non-profit foundation. No portion of the TIGHAR Website may be reproduced by xerographic, photographic, digital or any other means for any purpose. No portion of the TIGHAR Website may be stored in a retrieval system, copied, transmitted or transferred in any form or by any means, whether electronic, mechanical, digital, photographic, magnetic or otherwise, for any purpose without the express, written permission of TIGHAR. All rights reserved.

Contact us at: info@tighar.org • Phone: 610-467-1937 • Membership formwebmaster@tighar.org

Powered by MySQL SMF 2.0.15 | SMF © 2017, Simple Machines Powered by PHP