View Full Version : Replies - Flock of Birds

Raj Mootanah
11-19-2001, 07:33 PM
Dear members,

I recently posted the query below and I would like to thank all those who replied.

If you are using the flock of birds motion analysis system in UK, we'd be
> glad to hear from you! We're looking forward to start some work on this
> system and we would like to talk to people with experience first.

Rajshree Mootanah
Research Fellow
Bioengineering Research Group - DaCS
Anglia Polytechnic University
Victoria Road South
Tel: (44) 1245 493131 ext 3316
Fax: (44) 1245 252646


Dear Dr Mootanah,
I would be happy to chat. I've been using the device for about 10 years.

Anthony MJ Bull BEng ACGI DIC PhD MIMechE CEng
ARC Lecturer, Department of Bioengineering,
Bagrit Centre,
Imperial College, London SW7 2BX,
United Kingdom.
tel: +44 20 7594 5186
fax: +44 870 125 4985
email: a.bull@ic.ac.uk



We had a Flock system a few years ago in our labn and eventually sent
it back, as we were unable to properly use it for several reasons:

- We have a relatively small space in New York City, so the system
was never far from a floor or wall with metal studs.

- Beware the automatic gain control! We had an issue (at least with
the extended range transmitter) where if the distance from the
transmitter to the birds changed too greatly over time, the automatic
gain control would kick in, and cause very large artifacts in the
data we collected. This was not due to metal interference, as we
could duplicate the situation in the middle of someone's lawn in his
backyard. So, whatever test you're doing, try to make sure the
distance from your birds to the transmitter stays constant.


You may find some good resources from our reseller in London:

DatabaseID=3E385329202057302D5B5920|ContactID=5D2B 43382020504B2D5B5920|

David Hendon

Virtual Presence

2 The Canvas House

Jubilee Yard

25 Queen Elizabeth Street

London, SEI 2NL


Email: david.hendon@vrweb.com

Phone: [44] (2074)-074994

Fax: [44] (2074)-074995

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