RunRyder - following a radio telemetry signal

rrTV-PHOTO

New HD TV

HOME rrTV-PHOTO GALLERIES MY GALLERY HELP-FAQ

myHOME PM pmRR MEMBERS 668 ONLINE 45 EVENTS SEARCH REGISTER START HERE

1 page

1223 views

POST REPLY

Mikado Modellhubschrauber	.	GrandRC	.	CanoMod
	.		.

UAV Autonomous Unmanned Aerial Vehicles > following a radio telemetry signal

wild1957
Senior Heliman
Location: Malaysia

I have a tricky question for you boffins out there. I work with the organization called WWF (not the wrestling) here in Malaysia and I have been asked by one of our scientists if the helicopter can be made to fly autonomously to follow a radio signal being transmitted from a radio telemetry collar. I know the heli can follow a gps signal but can it follow a signal from a vhf transmitter then log the position as a gps co-ordinate.

Stephen

12-18-2007 11:41 PM

ErichF
Key Veteran
Location: Odessa, FL 33556 (Tampa Area)

I don't see why not, just a simple DF steer. The aircraft may have to make several turns in order to acquire the DF steer, but once done, it should work well. You have to have a highly directional antenna array similar to one found on ELT trackers.

We were looking at doing similar work in Kenya to count lion populations, but that didn't work out for some reason.

12-19-2007 12:52 AM

wild1957
Senior Heliman
Location: Malaysia

Hi Erich,

Thanks for your comments, Can I ask you what is DF steer? can yo say why you did not pursue this on the lion project?
I have to try to track tigers in a forest so not as easy as the open plains of Africa but I am interested to see if I can get it to work.
Any advice would be welcome.

Stephen

01-03-2008 04:41 AM

ErichF
Key Veteran
Location: Odessa, FL 33556 (Tampa Area)

A DF (Direction Finding) Steer is the term for which direction you turn to home in on a radio signal, or a series of turns in which you determine which direction the radio signal is from.

We didn't end up doing the job, it was just proposed to us a couple years ago, once. It sure sounded interesting, though, and wish it would have worked out.

Foliage would play havoc with getting a pin-point position on an animal, but depending on the signal band and such, could get you in the area. I've done plenty of ELT searches from the air over foliated areas. ELTs use 121.5 mhz.

01-03-2008 11:17 AM

wild1957
Senior Heliman
Location: Malaysia

Do you know where I can look to get more info on what I will need to get this working on the heli?

01-04-2008 08:10 AM

HunArcher
New Heliman
Location: Gödöllő, Budapest - Hungary

Radio telemetry, GPS lokation

Hello everyone!

I am Daniel from Hungary. I have a question for you. I'm learning and working in the Institute for Wildlife Conservation in St. Stephen University, and it's making a lot of radio telemetry monitoring. I'm writeing my thesis abuot Capreolus capreolus, and I need a lot of professional literature about radio telemetry and GPS lokation. I'm doing a comparative examine about these monitoring systems. So I have to get circumstantial literature in that issue, but in my language I didn't find any. So I would be pleased if anyone of you could give me an Internet address where I find specification abuaout these themes, or something which could be useful.

Daniel

02-27-2008 12:28 PM

HunArcher
New Heliman
Location: Gödöllő, Budapest - Hungary

Forgive my faults of spelling.

02-27-2008 01:36 PM

Dr.Rivet
New Heliman
Location: Seattle, WA, USA

I know that original question was posted long time ago, but thought I would share my thoughts in case if anyone is interested.

Well, full scale aircraft already do this for decades, it's called ILS system which consists of glide slope and a localizer which will give you a position in vertical plane with reference to approach path if you add DME it will give you distance to the source of the signal. All this equipment could be bought used at www.trade-a-plane.com and stripped down from heavy boxes to save weight. Then all you need is a used autopilot to couple with those devices. I know it's not that simple

Now transmitting equipment costs millions i think and usually is the size of a building...

Just some food for thought.

05-14-2008 01:51 AM

1 page

1223 views

POST REPLY

A Main Hobbies	.	Boca Bearings	.	Modefo's RC Helicopters
	.		.

UAV Autonomous Unmanned Aerial Vehicles > following a radio telemetry signal

UPDATE SCREEN PRINT TOPIC

Advertisers

Subscribe to This Topic